Polish UX to be width agnostic

.github/scripts/pr-triage.sh

@@ -22,7 +22,7 @@ get_issue_labels() {
     # Check cache
     case "${ISSUE_LABELS_CACHE_FLAT}" in
         *"|${ISSUE_NUM}:"*) 
-            local suffix="${ISSUE_LABELS_CACHE_FLAT#*|${ISSUE_NUM}:}"
+            local suffix="${ISSUE_LABELS_CACHE_FLAT#*|"${ISSUE_NUM}":}"
             echo "${suffix%%|*}"
             return
             ;; 

.github/workflows/chained_e2e.yml

@@ -224,8 +224,6 @@ jobs:
     if: |
       always() && (needs.merge_queue_skipper.result !='success' || needs.merge_queue_skipper.outputs.skip != 'true')
     runs-on: 'gemini-cli-windows-16-core'
-    continue-on-error: true
-
     steps:
       - name: 'Checkout'
         uses: 'actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955' # ratchet:actions/checkout@v5
@@ -315,6 +313,7 @@ jobs:
     needs:
       - 'e2e_linux'
       - 'e2e_mac'
+      - 'e2e_windows'
       - 'evals'
       - 'merge_queue_skipper'
     runs-on: 'gemini-cli-ubuntu-16-core'
@@ -323,6 +322,7 @@ jobs:
         run: |
           if [[ ${{ needs.e2e_linux.result }} != 'success' || \
                ${{ needs.e2e_mac.result }} != 'success' || \
+               ${{ needs.e2e_windows.result }} != 'success' || \
                ${{ needs.evals.result }} != 'success' ]]; then
             echo "One or more E2E jobs failed."
             exit 1

.github/workflows/ci.yml

@@ -360,7 +360,6 @@ jobs:
     runs-on: 'gemini-cli-windows-16-core'
     needs: 'merge_queue_skipper'
     if: "${{needs.merge_queue_skipper.outputs.skip == 'false'}}"
-    continue-on-error: true
     timeout-minutes: 60
     strategy:
       matrix:
@@ -458,6 +457,7 @@ jobs:
       - 'link_checker'
       - 'test_linux'
       - 'test_mac'
+      - 'test_windows'
       - 'codeql'
       - 'bundle_size'
     runs-on: 'gemini-cli-ubuntu-16-core'
@@ -468,6 +468,7 @@ jobs:
                (${{ needs.link_checker.result }} != 'success' && ${{ needs.link_checker.result }} != 'skipped') || \
                (${{ needs.test_linux.result }} != 'success' && ${{ needs.test_linux.result }} != 'skipped') || \
                (${{ needs.test_mac.result }} != 'success' && ${{ needs.test_mac.result }} != 'skipped') || \
+               (${{ needs.test_windows.result }} != 'success' && ${{ needs.test_windows.result }} != 'skipped') || \
                (${{ needs.codeql.result }} != 'success' && ${{ needs.codeql.result }} != 'skipped') || \
                (${{ needs.bundle_size.result }} != 'success' && ${{ needs.bundle_size.result }} != 'skipped') ]]; then
             echo "One or more CI jobs failed."

.github/workflows/evals-nightly.yml

@@ -27,6 +27,7 @@ jobs:
       fail-fast: false
       matrix:
         model:
+          - 'gemini-3.1-pro-preview-customtools'
           - 'gemini-3-pro-preview'
           - 'gemini-3-flash-preview'
           - 'gemini-2.5-pro'

.github/workflows/pr-rate-limiter.yaml

@@ -0,0 +1,29 @@
+# yaml-language-server: $schema=https://json.schemastore.org/github-workflow.json
+
+name: 'PR rate limiter'
+
+permissions: {}
+
+on:
+  pull_request_target:
+    types:
+      - 'opened'
+      - 'reopened'
+
+jobs:
+  limit:
+    runs-on: 'gemini-cli-ubuntu-16-core'
+    permissions:
+      contents: 'read'
+      pull-requests: 'write'
+    steps:
+      - name: 'Limit open pull requests per user'
+        uses: 'Homebrew/actions/limit-pull-requests@9ceb7934560eb61d131dde205a6c2d77b2e1529d' # master
+        with:
+          except-author-associations: 'MEMBER,OWNER,COLLABORATOR'
+          comment-limit: 8
+          comment: >
+            You already have 7 pull requests open. Please work on getting
+            existing PRs merged before opening more.
+          close-limit: 8
+          close: true

docs/cli/settings.md

@@ -112,14 +112,15 @@ they appear in the UI.
 
 ### Security
 
-| UI Label                              | Setting                                         | Description                                                                                                                                                             | Default |
-| ------------------------------------- | ----------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------- |
-| Disable YOLO Mode                     | `security.disableYoloMode`                      | Disable YOLO mode, even if enabled by a flag.                                                                                                                           | `false` |
-| Allow Permanent Tool Approval         | `security.enablePermanentToolApproval`          | Enable the "Allow for all future sessions" option in tool confirmation dialogs.                                                                                         | `false` |
-| Blocks extensions from Git            | `security.blockGitExtensions`                   | Blocks installing and loading extensions from Git.                                                                                                                      | `false` |
-| Extension Source Regex Allowlist      | `security.allowedExtensions`                    | List of Regex patterns for allowed extensions. If nonempty, only extensions that match the patterns in this list are allowed. Overrides the blockGitExtensions setting. | `[]`    |
-| Folder Trust                          | `security.folderTrust.enabled`                  | Setting to track whether Folder trust is enabled.                                                                                                                       | `true`  |
-| Enable Environment Variable Redaction | `security.environmentVariableRedaction.enabled` | Enable redaction of environment variables that may contain secrets.                                                                                                     | `false` |
+| UI Label                              | Setting                                         | Description                                                                                                                                                                                                                          | Default |
+| ------------------------------------- | ----------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------- |
+| Disable YOLO Mode                     | `security.disableYoloMode`                      | Disable YOLO mode, even if enabled by a flag.                                                                                                                                                                                        | `false` |
+| Allow Permanent Tool Approval         | `security.enablePermanentToolApproval`          | Enable the "Allow for all future sessions" option in tool confirmation dialogs.                                                                                                                                                      | `false` |
+| Blocks extensions from Git            | `security.blockGitExtensions`                   | Blocks installing and loading extensions from Git.                                                                                                                                                                                   | `false` |
+| Extension Source Regex Allowlist      | `security.allowedExtensions`                    | List of Regex patterns for allowed extensions. If nonempty, only extensions that match the patterns in this list are allowed. Overrides the blockGitExtensions setting.                                                              | `[]`    |
+| Folder Trust                          | `security.folderTrust.enabled`                  | Setting to track whether Folder trust is enabled.                                                                                                                                                                                    | `true`  |
+| Enable Environment Variable Redaction | `security.environmentVariableRedaction.enabled` | Enable redaction of environment variables that may contain secrets.                                                                                                                                                                  | `false` |
+| Enable Context-Aware Security         | `security.enableConseca`                        | Enable the context-aware security checker. This feature uses an LLM to dynamically generate and enforce security policies for tool use based on your prompt, providing an additional layer of protection against unintended actions. | `false` |
 
 ### Advanced
 

docs/extensions/reference.md

@@ -116,7 +116,9 @@ The manifest file defines the extension's behavior and configuration.
   "description": "My awesome extension",
   "mcpServers": {
     "my-server": {
-      "command": "node my-server.js"
+      "command": "node",
+      "args": ["${extensionPath}/my-server.js"],
+      "cwd": "${extensionPath}"
     }
   },
   "contextFileName": "GEMINI.md",
@@ -124,19 +126,41 @@ The manifest file defines the extension's behavior and configuration.
 }
 ```
 
-- `name`: A unique identifier for the extension. Use lowercase letters, numbers,
-  and dashes. This name must match the extension's directory name.
-- `version`: The current version of the extension.
-- `description`: A short summary shown in the extension gallery.
-- <a id="mcp-servers"></a>`mcpServers`: A map of Model Context Protocol (MCP)
-  servers. Extension servers follow the same format as standard
-  [CLI configuration](../reference/configuration.md).
-- `contextFileName`: The name of the context file (defaults to `GEMINI.md`). Can
-  also be an array of strings to load multiple context files.
-- `excludeTools`: An array of tools to block from the model. You can restrict
-  specific arguments, such as `run_shell_command(rm -rf)`.
-- `themes`: An optional list of themes provided by the extension. See
-  [Themes](../cli/themes.md) for more information.
+- `name`: The name of the extension. This is used to uniquely identify the
+  extension and for conflict resolution when extension commands have the same
+  name as user or project commands. The name should be lowercase or numbers and
+  use dashes instead of underscores or spaces. This is how users will refer to
+  your extension in the CLI. Note that we expect this name to match the
+  extension directory name.
+- `version`: The version of the extension.
+- `description`: A short description of the extension. This will be displayed on
+  [geminicli.com/extensions](https://geminicli.com/extensions).
+- `mcpServers`: A map of MCP servers to settings. The key is the name of the
+  server, and the value is the server configuration. These servers will be
+  loaded on startup just like MCP servers defined in a
+  [`settings.json` file](../reference/configuration.md). If both an extension
+  and a `settings.json` file define an MCP server with the same name, the server
+  defined in the `settings.json` file takes precedence.
+  - Note that all MCP server configuration options are supported except for
+    `trust`.
+  - For portability, you should use `${extensionPath}` to refer to files within
+    your extension directory.
+  - Separate your executable and its arguments using `command` and `args`
+    instead of putting them both in `command`.
+- `contextFileName`: The name of the file that contains the context for the
+  extension. This will be used to load the context from the extension directory.
+  If this property is not used but a `GEMINI.md` file is present in your
+  extension directory, then that file will be loaded.
+- `excludeTools`: An array of tool names to exclude from the model. You can also
+  specify command-specific restrictions for tools that support it, like the
+  `run_shell_command` tool. For example,
+  `"excludeTools": ["run_shell_command(rm -rf)"]` will block the `rm -rf`
+  command. Note that this differs from the MCP server `excludeTools`
+  functionality, which can be listed in the MCP server config.
+
+When Gemini CLI starts, it loads all the extensions and merges their
+configurations. If there are any conflicts, the workspace configuration takes
+precedence.
 
 ### Extension settings
 

docs/hooks/reference.md

@@ -98,6 +98,8 @@ and parameter rewriting.
   - `tool_name`: (`string`) The name of the tool being called.
   - `tool_input`: (`object`) The raw arguments generated by the model.
   - `mcp_context`: (`object`) Optional metadata for MCP-based tools.
+  - `original_request_name`: (`string`) The original name of the tool being
+    called, if this is a tail tool call.
 - **Relevant Output Fields**:
   - `decision`: Set to `"deny"` (or `"block"`) to prevent the tool from
     executing.
@@ -120,12 +122,18 @@ hiding sensitive output from the agent.
   - `tool_response`: (`object`) The result containing `llmContent`,
     `returnDisplay`, and optional `error`.
   - `mcp_context`: (`object`)
+  - `original_request_name`: (`string`) The original name of the tool being
+    called, if this is a tail tool call.
 - **Relevant Output Fields**:
   - `decision`: Set to `"deny"` to hide the real tool output from the agent.
   - `reason`: Required if denied. This text **replaces** the tool result sent
     back to the model.
   - `hookSpecificOutput.additionalContext`: Text that is **appended** to the
     tool result for the agent.
+  - `hookSpecificOutput.tailToolCallRequest`: (`{ name: string, args: object }`)
+    A request to execute another tool immediately after this one. The result of
+    this "tail call" will replace the original tool's response. Ideal for
+    programmatic tool routing.
   - `continue`: Set to `false` to **kill the entire agent loop** immediately.
 - **Exit Code 2 (Block Result)**: Hides the tool result. Uses `stderr` as the
   replacement content sent to the agent. **The turn continues.**

docs/reference/configuration.md

@@ -873,6 +873,14 @@ their corresponding top-level category object in your `settings.json` file.
   - **Default:** `undefined`
   - **Requires restart:** Yes
 
+- **`security.enableConseca`** (boolean):
+  - **Description:** Enable the context-aware security checker. This feature
+    uses an LLM to dynamically generate and enforce security policies for tool
+    use based on your prompt, providing an additional layer of protection
+    against unintended actions.
+  - **Default:** `false`
+  - **Requires restart:** Yes
+
 #### `advanced`
 
 - **`advanced.autoConfigureMemory`** (boolean):

evals/frugalReads.eval.ts

@@ -78,22 +78,23 @@ describe('Frugal reads eval', () => {
       ).toBe(true);
 
       let totalLinesRead = 0;
-      const readRanges: { offset: number; limit: number }[] = [];
+      const readRanges: { start_line: number; end_line: number }[] = [];
 
       for (const call of targetFileReads) {
         const args = JSON.parse(call.toolRequest.args);
 
         expect(
-          args.limit,
-          'Agent read the entire file (missing limit) instead of using ranged read',
+          args.end_line,
+          'Agent read the entire file (missing end_line) instead of using ranged read',
         ).toBeDefined();
 
-        const limit = args.limit;
-        const offset = args.offset ?? 0;
-        totalLinesRead += limit;
-        readRanges.push({ offset, limit });
+        const end_line = args.end_line;
+        const start_line = args.start_line ?? 1;
+        const linesRead = end_line - start_line + 1;
+        totalLinesRead += linesRead;
+        readRanges.push({ start_line, end_line });
 
-        expect(args.limit, 'Agent read too many lines at once').toBeLessThan(
+        expect(linesRead, 'Agent read too many lines at once').toBeLessThan(
           1001,
         );
       }
@@ -108,7 +109,7 @@ describe('Frugal reads eval', () => {
       const errorLines = [500, 510, 520];
       for (const line of errorLines) {
         const covered = readRanges.some(
-          (range) => line >= range.offset && line < range.offset + range.limit,
+          (range) => line >= range.start_line && line <= range.end_line,
         );
         expect(covered, `Agent should have read around line ${line}`).toBe(
           true,
@@ -191,8 +192,8 @@ describe('Frugal reads eval', () => {
       for (const call of targetFileReads) {
         const args = JSON.parse(call.toolRequest.args);
         expect(
-          args.limit,
-          'Agent should have used ranged read (limit) to save tokens',
+          args.end_line,
+          'Agent should have used ranged read (end_line) to save tokens',
         ).toBeDefined();
       }
     },
@@ -253,7 +254,7 @@ describe('Frugal reads eval', () => {
       // and just read the whole file to be efficient with tool calls.
       const readEntireFile = targetFileReads.some((call) => {
         const args = JSON.parse(call.toolRequest.args);
-        return args.limit === undefined;
+        return args.end_line === undefined;
       });
 
       expect(

evals/frugalSearch.eval.ts

@@ -68,7 +68,7 @@ describe('Frugal Search', () => {
         const args = getParams(call);
         return (
           args.file_path === 'src/legacy_processor.ts' &&
-          (args.limit === undefined || args.limit === null)
+          (args.end_line === undefined || args.end_line === null)
         );
       });
 
@@ -87,7 +87,7 @@ describe('Frugal Search', () => {
         if (
           call.toolRequest.name === 'read_file' &&
           args.file_path === 'src/legacy_processor.ts' &&
-          args.limit !== undefined
+          args.end_line !== undefined
         ) {
           return true;
         }

evals/interactive-hang.eval.ts

@@ -56,7 +56,7 @@ describe('interactive_commands', () => {
       const scaffoldCall = logs.find(
         (l) =>
           l.toolRequest.name === 'run_shell_command' &&
-          /npm (init|create)|npx create-|yarn create|pnpm create/.test(
+          /npm (init|create)|npx (.*)?create-|yarn create|pnpm create/.test(
             l.toolRequest.args,
           ),
       );

integration-tests/hooks-system.tail-tool-call.responses

@@ -0,0 +1,2 @@
+{"method":"generateContentStream","response":[{"candidates":[{"content":{"parts":[{"functionCall":{"name":"read_file","args":{"file_path":"original.txt"}}}],"role":"model"},"finishReason":"STOP","index":0}]}]}
+{"method":"generateContentStream","response":[{"candidates":[{"content":{"parts":[{"text":"Tail call completed successfully."}],"role":"model"},"finishReason":"STOP","index":0}]}]}

integration-tests/hooks-system.test.ts

@@ -286,6 +286,113 @@ describe('Hooks System Integration', () => {
     });
   });
 
+  describe('Command Hooks - Tail Tool Calls', () => {
+    it('should execute a tail tool call from AfterTool hooks and replace original response', async () => {
+      // Create a script that acts as the hook.
+      // It will trigger on "read_file" and issue a tail call to "write_file".
+      rig.setup('should execute a tail tool call from AfterTool hooks', {
+        fakeResponsesPath: join(
+          import.meta.dirname,
+          'hooks-system.tail-tool-call.responses',
+        ),
+      });
+
+      const hookOutput = {
+        decision: 'allow',
+        hookSpecificOutput: {
+          hookEventName: 'AfterTool',
+          tailToolCallRequest: {
+            name: 'write_file',
+            args: {
+              file_path: 'tail-called-file.txt',
+              content: 'Content from tail call',
+            },
+          },
+        },
+      };
+
+      const hookScript = `console.log(JSON.stringify(${JSON.stringify(
+        hookOutput,
+      )})); process.exit(0);`;
+
+      const scriptPath = join(rig.testDir!, 'tail_call_hook.js');
+      writeFileSync(scriptPath, hookScript);
+      const commandPath = scriptPath.replace(/\\/g, '/');
+
+      rig.setup('should execute a tail tool call from AfterTool hooks', {
+        fakeResponsesPath: join(
+          import.meta.dirname,
+          'hooks-system.tail-tool-call.responses',
+        ),
+        settings: {
+          hooksConfig: {
+            enabled: true,
+          },
+          hooks: {
+            AfterTool: [
+              {
+                matcher: 'read_file',
+                hooks: [
+                  {
+                    type: 'command',
+                    command: `node "${commandPath}"`,
+                    timeout: 5000,
+                  },
+                ],
+              },
+            ],
+          },
+        },
+      });
+
+      // Create a test file to trigger the read_file tool
+      rig.createFile('original.txt', 'Original content');
+
+      const cliOutput = await rig.run({
+        args: 'Read original.txt', // Fake responses should trigger read_file on this
+      });
+
+      // 1. Verify that write_file was called (as a tail call replacing read_file)
+      // Since read_file was replaced before finalizing, it will not appear in the tool logs.
+      const foundWriteFile = await rig.waitForToolCall('write_file');
+      expect(foundWriteFile).toBeTruthy();
+
+      // Ensure hook logs are flushed and the final LLM response is received.
+      // The mock LLM is configured to respond with "Tail call completed successfully."
+      expect(cliOutput).toContain('Tail call completed successfully.');
+
+      // Ensure telemetry is written to disk
+      await rig.waitForTelemetryReady();
+
+      // Read hook logs to debug
+      const hookLogs = rig.readHookLogs();
+      const relevantHookLog = hookLogs.find(
+        (l) => l.hookCall.hook_event_name === 'AfterTool',
+      );
+
+      expect(relevantHookLog).toBeDefined();
+
+      // 2. Verify write_file was executed.
+      // In non-interactive mode, the CLI deduplicates tool execution logs by callId.
+      // Since a tail call reuses the original callId, "Tool: write_file" is not printed.
+      // Instead, we verify the side-effect (file creation) and the telemetry log.
+
+      // 3. Verify the tail-called tool actually wrote the file
+      const modifiedContent = rig.readFile('tail-called-file.txt');
+      expect(modifiedContent).toBe('Content from tail call');
+
+      // 4. Verify telemetry for the final tool call.
+      // The original 'read_file' call is replaced, so only 'write_file' is finalized and logged.
+      const toolLogs = rig.readToolLogs();
+      const successfulTools = toolLogs.filter((t) => t.toolRequest.success);
+      expect(
+        successfulTools.some((t) => t.toolRequest.name === 'write_file'),
+      ).toBeTruthy();
+      // The original request name should be preserved in the log payload if possible,
+      // but the executed tool name is 'write_file'.
+    });
+  });
+
   describe('BeforeModel Hooks - LLM Request Modification', () => {
     it('should modify LLM requests with BeforeModel hooks', async () => {
       // Create a hook script that replaces the LLM request with a modified version

packages/cli/src/config/config.ts

@@ -878,6 +878,7 @@ export async function loadCliConfig(
         agents: refreshedSettings.merged.agents,
       };
     },
+    enableConseca: settings.security?.enableConseca,
   });
 }
 

packages/cli/src/config/settingsSchema.ts

@@ -1493,6 +1493,16 @@ const SETTINGS_SCHEMA = {
           },
         },
       },
+      enableConseca: {
+        type: 'boolean',
+        label: 'Enable Context-Aware Security',
+        category: 'Security',
+        requiresRestart: true,
+        default: false,
+        description:
+          'Enable the context-aware security checker. This feature uses an LLM to dynamically generate and enforce security policies for tool use based on your prompt, providing an additional layer of protection against unintended actions.',
+        showInDialog: true,
+      },
     },
   },
 

packages/cli/src/ui/components/Footer.test.tsx

@@ -182,7 +182,7 @@ describe('<Footer />', () => {
       },
     );
     await waitUntilReady();
-    expect(lastFrame()).toContain('15%');
+    expect(lastFrame()).toContain('85%');
     expect(lastFrame()).toMatchSnapshot();
     unmount();
   });

packages/cli/src/ui/components/QuotaDisplay.test.tsx

@@ -5,10 +5,20 @@
  */
 
 import { render } from '../../test-utils/render.js';
-import { describe, it, expect } from 'vitest';
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
 import { QuotaDisplay } from './QuotaDisplay.js';
 
 describe('QuotaDisplay', () => {
+  beforeEach(() => {
+    vi.stubEnv('TZ', 'America/Los_Angeles');
+    vi.useFakeTimers();
+    vi.setSystemTime(new Date('2026-03-02T20:29:00.000Z'));
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+    vi.unstubAllEnvs();
+  });
   it('should not render when remaining is undefined', async () => {
     const { lastFrame, waitUntilReady, unmount } = render(
       <QuotaDisplay remaining={undefined} limit={100} />,
@@ -36,7 +46,7 @@ describe('QuotaDisplay', () => {
     unmount();
   });
 
-  it('should not render when usage > 20%', async () => {
+  it('should not render when usage < 80%', async () => {
     const { lastFrame, waitUntilReady, unmount } = render(
       <QuotaDisplay remaining={85} limit={100} />,
     );
@@ -45,7 +55,7 @@ describe('QuotaDisplay', () => {
     unmount();
   });
 
-  it('should render yellow when usage < 20%', async () => {
+  it('should render warning when used >= 80%', async () => {
     const { lastFrame, waitUntilReady, unmount } = render(
       <QuotaDisplay remaining={15} limit={100} />,
     );
@@ -54,7 +64,7 @@ describe('QuotaDisplay', () => {
     unmount();
   });
 
-  it('should render red when usage < 5%', async () => {
+  it('should render critical when used >= 95%', async () => {
     const { lastFrame, waitUntilReady, unmount } = render(
       <QuotaDisplay remaining={4} limit={100} />,
     );

packages/cli/src/ui/components/QuotaDisplay.tsx

@@ -7,9 +7,9 @@
 import type React from 'react';
 import { Text } from 'ink';
 import {
-  getStatusColor,
-  QUOTA_THRESHOLD_HIGH,
-  QUOTA_THRESHOLD_MEDIUM,
+  getUsedStatusColor,
+  QUOTA_USED_WARNING_THRESHOLD,
+  QUOTA_USED_CRITICAL_THRESHOLD,
 } from '../utils/displayUtils.js';
 import { formatResetTime } from '../utils/formatters.js';
 
@@ -30,26 +30,24 @@ export const QuotaDisplay: React.FC<QuotaDisplayProps> = ({
     return null;
   }
 
-  const percentage = (remaining / limit) * 100;
+  const usedPercentage = 100 - (remaining / limit) * 100;
 
-  if (percentage > QUOTA_THRESHOLD_HIGH) {
+  if (usedPercentage < QUOTA_USED_WARNING_THRESHOLD) {
     return null;
   }
 
-  const color = getStatusColor(percentage, {
-    green: QUOTA_THRESHOLD_HIGH,
-    yellow: QUOTA_THRESHOLD_MEDIUM,
+  const color = getUsedStatusColor(usedPercentage, {
+    warning: QUOTA_USED_WARNING_THRESHOLD,
+    critical: QUOTA_USED_CRITICAL_THRESHOLD,
   });
 
-  const resetInfo =
-    !terse && resetTime ? `, ${formatResetTime(resetTime)}` : '';
-
   if (remaining === 0) {
+    const resetMsg = resetTime
+      ? `, resets in ${formatResetTime(resetTime, true)}`
+      : '';
     return (
       <Text color={color}>
-        {terse
-          ? 'Limit reached'
-          : `/stats Limit reached${resetInfo}${!terse && '. /auth to continue.'}`}
+        {terse ? 'Limit reached' : `Limit reached${resetMsg}`}
       </Text>
     );
   }
@@ -57,8 +55,12 @@ export const QuotaDisplay: React.FC<QuotaDisplayProps> = ({
   return (
     <Text color={color}>
       {terse
-        ? `${percentage.toFixed(0)}%`
-        : `/stats ${percentage.toFixed(0)}% usage remaining${resetInfo}`}
+        ? `${usedPercentage.toFixed(0)}%`
+        : `${usedPercentage.toFixed(0)}% used${
+            resetTime
+              ? ` (Limit resets in ${formatResetTime(resetTime, true)})`
+              : ''
+          }`}
     </Text>
   );
 };

packages/cli/src/ui/components/QuotaStatsInfo.tsx

@@ -9,9 +9,9 @@ import { Box, Text } from 'ink';
 import { theme } from '../semantic-colors.js';
 import { formatResetTime } from '../utils/formatters.js';
 import {
-  getStatusColor,
-  QUOTA_THRESHOLD_HIGH,
-  QUOTA_THRESHOLD_MEDIUM,
+  getUsedStatusColor,
+  QUOTA_USED_WARNING_THRESHOLD,
+  QUOTA_USED_CRITICAL_THRESHOLD,
 } from '../utils/displayUtils.js';
 
 interface QuotaStatsInfoProps {
@@ -31,19 +31,24 @@ export const QuotaStatsInfo: React.FC<QuotaStatsInfoProps> = ({
     return null;
   }
 
-  const percentage = (remaining / limit) * 100;
-  const color = getStatusColor(percentage, {
-    green: QUOTA_THRESHOLD_HIGH,
-    yellow: QUOTA_THRESHOLD_MEDIUM,
+  const usedPercentage = 100 - (remaining / limit) * 100;
+  const color = getUsedStatusColor(usedPercentage, {
+    warning: QUOTA_USED_WARNING_THRESHOLD,
+    critical: QUOTA_USED_CRITICAL_THRESHOLD,
   });
 
   return (
     <Box flexDirection="column" marginTop={0} marginBottom={0}>
       <Text color={color}>
         {remaining === 0
-          ? `Limit reached`
-          : `${percentage.toFixed(0)}% usage remaining`}
-        {resetTime && `, ${formatResetTime(resetTime)}`}
+          ? `Limit reached${
+              resetTime ? `, resets in ${formatResetTime(resetTime, true)}` : ''
+            }`
+          : `${usedPercentage.toFixed(0)}% used${
+              resetTime
+                ? ` (Limit resets in ${formatResetTime(resetTime, true)})`
+                : ''
+            }`}
       </Text>
       {showDetails && (
         <>

packages/cli/src/ui/components/StatsDisplay.test.tsx

@@ -465,9 +465,9 @@ describe('<StatsDisplay />', () => {
       await waitUntilReady();
       const output = lastFrame();
 
-      expect(output).toContain('Usage remaining');
-      expect(output).toContain('75.0%');
-      expect(output).toContain('resets in 1h 30m');
+      expect(output).toContain('Model usage');
+      expect(output).toContain('25%');
+      expect(output).toContain('Usage resets');
       expect(output).toMatchSnapshot();
 
       vi.useRealTimers();
@@ -521,8 +521,8 @@ describe('<StatsDisplay />', () => {
       await waitUntilReady();
       const output = lastFrame();
 
-      // (10 + 700) / (100 + 1000) = 710 / 1100 = 64.5%
-      expect(output).toContain('65% usage remaining');
+      // (1 - 710/1100) * 100 = 35.5%
+      expect(output).toContain('35%');
       expect(output).toContain('Usage limit: 1,100');
       expect(output).toMatchSnapshot();
 
@@ -571,8 +571,8 @@ describe('<StatsDisplay />', () => {
 
       expect(output).toContain('gemini-2.5-flash');
       expect(output).toContain('-'); // for requests
-      expect(output).toContain('50.0%');
-      expect(output).toContain('resets in 2h');
+      expect(output).toContain('50%');
+      expect(output).toContain('Usage resets');
       expect(output).toMatchSnapshot();
 
       vi.useRealTimers();

packages/cli/src/ui/components/StatsDisplay.tsx

@@ -5,7 +5,7 @@
  */
 
 import type React from 'react';
-import { Box, Text } from 'ink';
+import { Box, Text, useStdout } from 'ink';
 import { ThemedGradient } from './ThemedGradient.js';
 import { theme } from '../semantic-colors.js';
 import { formatDuration, formatResetTime } from '../utils/formatters.js';
@@ -19,6 +19,9 @@ import {
   USER_AGREEMENT_RATE_MEDIUM,
   CACHE_EFFICIENCY_HIGH,
   CACHE_EFFICIENCY_MEDIUM,
+  getUsedStatusColor,
+  QUOTA_USED_WARNING_THRESHOLD,
+  QUOTA_USED_CRITICAL_THRESHOLD,
 } from '../utils/displayUtils.js';
 import { computeSessionStats } from '../utils/computeStats.js';
 import {
@@ -155,6 +158,8 @@ const ModelUsageTable: React.FC<{
   useGemini3_1,
   useCustomToolModel,
 }) => {
+  const { stdout } = useStdout();
+  const terminalWidth = stdout?.columns ?? 84;
   const rows = buildModelRows(models, quotas, useGemini3_1, useCustomToolModel);
 
   if (rows.length === 0) {
@@ -163,12 +168,47 @@ const ModelUsageTable: React.FC<{
 
   const showQuotaColumn = !!quotas && rows.some((row) => !!row.bucket);
 
-  const nameWidth = 25;
-  const requestsWidth = 7;
+  const nameWidth = 23;
+  const requestsWidth = 5;
   const uncachedWidth = 15;
   const cachedWidth = 14;
   const outputTokensWidth = 15;
-  const usageLimitWidth = showQuotaColumn ? 28 : 0;
+  const percentageWidth = showQuotaColumn ? 6 : 0;
+  const resetWidth = 22;
+
+  // Total width of other columns (including parent box paddingX={2})
+  const fixedWidth = nameWidth + requestsWidth + percentageWidth + resetWidth;
+  const outerPadding = 4;
+  const availableForUsage = terminalWidth - outerPadding - fixedWidth;
+
+  const usageLimitWidth = showQuotaColumn
+    ? Math.max(10, Math.min(24, availableForUsage))
+    : 0;
+  const progressBarWidth = Math.max(2, usageLimitWidth - 4);
+
+  const renderProgressBar = (
+    usedFraction: number,
+    color: string,
+    totalSteps = 20,
+  ) => {
+    let filledSteps = Math.round(usedFraction * totalSteps);
+
+    // If something is used (fraction > 0) but rounds to 0, show 1 tick.
+    // If < 100% (fraction < 1) but rounds to 20, show 19 ticks.
+    if (usedFraction > 0 && usedFraction < 1) {
+      filledSteps = Math.min(Math.max(filledSteps, 1), totalSteps - 1);
+    }
+
+    const emptySteps = Math.max(0, totalSteps - filledSteps);
+    return (
+      <Box flexDirection="row" flexShrink={0}>
+        <Text wrap="truncate-end">
+          <Text color={color}>{'▬'.repeat(filledSteps)}</Text>
+          <Text color={theme.border.default}>{'▬'.repeat(emptySteps)}</Text>
+        </Text>
+      </Box>
+    );
+  };
 
   const cacheEfficiencyColor = getStatusColor(cacheEfficiency, {
     green: CACHE_EFFICIENCY_HIGH,
@@ -179,25 +219,13 @@ const ModelUsageTable: React.FC<{
     nameWidth +
     requestsWidth +
     (showQuotaColumn
-      ? usageLimitWidth
+      ? usageLimitWidth + percentageWidth + resetWidth
       : uncachedWidth + cachedWidth + outputTokensWidth);
 
   const isAuto = currentModel && isAutoModel(currentModel);
-  const modelUsageTitle = isAuto
-    ? `${getDisplayString(currentModel)} Usage`
-    : `Model Usage`;
 
   return (
     <Box flexDirection="column" marginBottom={1}>
-      {/* Header */}
-      <Box alignItems="flex-end">
-        <Box width={nameWidth}>
-          <Text bold color={theme.text.primary} wrap="truncate-end">
-            {modelUsageTitle}
-          </Text>
-        </Box>
-      </Box>
-
       {isAuto &&
         showQuotaColumn &&
         pooledRemaining !== undefined &&
@@ -216,7 +244,7 @@ const ModelUsageTable: React.FC<{
         )}
 
       <Box alignItems="flex-end">
-        <Box width={nameWidth}>
+        <Box width={nameWidth} flexShrink={0}>
           <Text bold color={theme.text.primary}>
             Model
           </Text>
@@ -267,15 +295,31 @@ const ModelUsageTable: React.FC<{
           </>
         )}
         {showQuotaColumn && (
-          <Box
-            width={usageLimitWidth}
-            flexDirection="column"
-            alignItems="flex-end"
-          >
-            <Text bold color={theme.text.primary}>
-              Usage remaining
-            </Text>
-          </Box>
+          <>
+            <Box
+              width={usageLimitWidth}
+              flexDirection="column"
+              alignItems="flex-start"
+              paddingLeft={4}
+              flexShrink={0}
+            >
+              <Text bold color={theme.text.primary}>
+                Model usage
+              </Text>
+            </Box>
+            <Box width={percentageWidth} flexShrink={0} />
+            <Box
+              width={resetWidth}
+              flexDirection="column"
+              alignItems="flex-start"
+              paddingLeft={2}
+              flexShrink={0}
+            >
+              <Text bold color={theme.text.primary} wrap="truncate-end">
+                Usage resets
+              </Text>
+            </Box>
+          </>
         )}
       </Box>
 
@@ -292,7 +336,7 @@ const ModelUsageTable: React.FC<{
 
       {rows.map((row) => (
         <Box key={row.key}>
-          <Box width={nameWidth}>
+          <Box width={nameWidth} flexShrink={0}>
             <Text
               color={row.isActive ? theme.text.primary : theme.text.secondary}
               wrap="truncate-end"
@@ -352,20 +396,100 @@ const ModelUsageTable: React.FC<{
               </Box>
             </>
           )}
-          <Box
-            width={usageLimitWidth}
-            flexDirection="column"
-            alignItems="flex-end"
-          >
-            {row.bucket &&
-              row.bucket.remainingFraction != null &&
-              row.bucket.resetTime && (
+          {showQuotaColumn && (
+            <>
+              <Box
+                width={usageLimitWidth}
+                flexDirection="column"
+                alignItems="flex-start"
+                paddingLeft={4}
+                flexShrink={0}
+              >
+                {row.bucket && row.bucket.remainingFraction != null && (
+                  <Box flexDirection="row" flexShrink={0}>
+                    {(() => {
+                      const actualUsedFraction =
+                        1 - row.bucket.remainingFraction;
+                      const effectiveUsedFraction =
+                        actualUsedFraction === 0 && row.isActive
+                          ? 0.001
+                          : actualUsedFraction;
+                      const usedPercentage = effectiveUsedFraction * 100;
+
+                      const statusColor =
+                        getUsedStatusColor(usedPercentage, {
+                          warning: QUOTA_USED_WARNING_THRESHOLD,
+                          critical: QUOTA_USED_CRITICAL_THRESHOLD,
+                        }) ??
+                        (row.isActive ? theme.text.primary : theme.ui.comment);
+
+                      return renderProgressBar(
+                        effectiveUsedFraction,
+                        statusColor,
+                        progressBarWidth,
+                      );
+                    })()}
+                  </Box>
+                )}
+              </Box>
+              <Box
+                width={percentageWidth}
+                flexDirection="column"
+                alignItems="flex-end"
+                flexShrink={0}
+              >
+                {row.bucket && row.bucket.remainingFraction != null && (
+                  <Box>
+                    {(() => {
+                      const actualUsedFraction =
+                        1 - row.bucket.remainingFraction;
+                      const effectiveUsedFraction =
+                        actualUsedFraction === 0 && row.isActive
+                          ? 0.001
+                          : actualUsedFraction;
+                      const usedPercentage = effectiveUsedFraction * 100;
+
+                      const statusColor =
+                        getUsedStatusColor(usedPercentage, {
+                          warning: QUOTA_USED_WARNING_THRESHOLD,
+                          critical: QUOTA_USED_CRITICAL_THRESHOLD,
+                        }) ??
+                        (row.isActive ? theme.text.primary : theme.ui.comment);
+
+                      const percentageText =
+                        usedPercentage > 0 && usedPercentage < 1
+                          ? `${usedPercentage.toFixed(1)}%`
+                          : `${usedPercentage.toFixed(0)}%`;
+
+                      return row.bucket.remainingFraction === 0 ? (
+                        <Text color={theme.status.error} wrap="truncate-end">
+                          Limit
+                        </Text>
+                      ) : (
+                        <Text color={statusColor} wrap="truncate-end">
+                          {percentageText}
+                        </Text>
+                      );
+                    })()}
+                  </Box>
+                )}
+              </Box>
+              <Box
+                width={resetWidth}
+                flexDirection="column"
+                alignItems="flex-start"
+                paddingLeft={2}
+                flexShrink={0}
+              >
                 <Text color={theme.text.secondary} wrap="truncate-end">
-                  {(row.bucket.remainingFraction * 100).toFixed(1)}%{' '}
-                  {formatResetTime(row.bucket.resetTime)}
+                  {row.bucket?.resetTime &&
+                  formatResetTime(row.bucket.resetTime, 'column')
+                    ? formatResetTime(row.bucket.resetTime, 'column')
+                    : ''}
                 </Text>
-              )}
-          </Box>
+              </Box>
+            </>
+          )}
         </Box>
       ))}
 

packages/cli/src/ui/components/StatusDisplay.test.tsx

@@ -89,11 +89,12 @@ const renderStatusDisplay = async (
 };
 
 describe('StatusDisplay', () => {
-  const originalEnv = process.env;
+  beforeEach(() => {
+    vi.stubEnv('GEMINI_SYSTEM_MD', '');
+  });
 
   afterEach(() => {
-    process.env = { ...originalEnv };
-    delete process.env['GEMINI_SYSTEM_MD'];
+    vi.unstubAllEnvs();
     vi.restoreAllMocks();
   });
 
@@ -112,7 +113,7 @@ describe('StatusDisplay', () => {
   });
 
   it('renders system md indicator if env var is set', async () => {
-    process.env['GEMINI_SYSTEM_MD'] = 'true';
+    vi.stubEnv('GEMINI_SYSTEM_MD', 'true');
     const { lastFrame, unmount } = await renderStatusDisplay();
     expect(lastFrame()).toMatchSnapshot();
     unmount();

packages/cli/src/ui/components/__snapshots__/Footer.test.tsx.snap

@@ -6,7 +6,7 @@ exports[`<Footer /> > displays "Limit reached" message when remaining is 0 1`] =
 `;
 
 exports[`<Footer /> > displays the usage indicator when usage is low 1`] = `
-" ...directories/to/make/it/long                      no sandbox (see /docs)                       /model gemini-pro 15%
+" ...directories/to/make/it/long                      no sandbox (see /docs)                       /model gemini-pro 85%
 "
 `;
 

packages/cli/src/ui/components/__snapshots__/QuotaDisplay.test.tsx.snap

@@ -1,12 +1,12 @@
 // Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
 exports[`QuotaDisplay > should NOT render reset time when terse is true 1`] = `
-"15%
+"85%
 "
 `;
 
-exports[`QuotaDisplay > should render red when usage < 5% 1`] = `
-"/stats 4% usage remaining
+exports[`QuotaDisplay > should render critical when used >= 95% 1`] = `
+"96% used
 "
 `;
 
@@ -15,12 +15,12 @@ exports[`QuotaDisplay > should render terse limit reached message 1`] = `
 "
 `;
 
-exports[`QuotaDisplay > should render with reset time when provided 1`] = `
-"/stats 15% usage remaining, resets in 1h
+exports[`QuotaDisplay > should render warning when used >= 80% 1`] = `
+"85% used
 "
 `;
 
-exports[`QuotaDisplay > should render yellow when usage < 20% 1`] = `
-"/stats 15% usage remaining
+exports[`QuotaDisplay > should render with reset time when provided 1`] = `
+"85% used (Limit resets in 1h)
 "
 `;

packages/cli/src/ui/components/__snapshots__/StatsDisplay.test.tsx.snap

@@ -117,10 +117,9 @@ exports[`<StatsDisplay /> > Conditional Rendering Tests > hides Efficiency secti
 │    » API Time:               100ms (100.0%)                                                      │
 │    » Tool Time:              0s (0.0%)                                                           │
 │                                                                                                  │
-│  Model Usage                                                                                     │
-│  Model                       Reqs   Input Tokens   Cache Reads  Output Tokens                    │
-│  ────────────────────────────────────────────────────────────────────────────                    │
-│  gemini-2.5-pro                 1            100             0            100                    │
+│  Model                   Reqs   Input Tokens   Cache Reads  Output Tokens                        │
+│  ────────────────────────────────────────────────────────────────────────                        │
+│  gemini-2.5-pro             1            100             0            100                        │
 │                                                                                                  │
 ╰──────────────────────────────────────────────────────────────────────────────────────────────────╯
 "
@@ -162,16 +161,15 @@ exports[`<StatsDisplay /> > Quota Display > renders pooled quota information for
 │    » API Time:               0s (0.0%)                                                           │
 │    » Tool Time:              0s (0.0%)                                                           │
 │                                                                                                  │
-│  auto Usage                                                                                      │
-│  65% usage remaining                                                                             │
+│  35% used                                                                                        │
 │  Usage limit: 1,100                                                                              │
 │  Usage limits span all sessions and reset daily.                                                 │
 │  For a full token breakdown, run \`/stats model\`.                                                 │
 │                                                                                                  │
-│  Model                       Reqs             Usage remaining                                    │
-│  ────────────────────────────────────────────────────────────                                    │
-│  gemini-2.5-pro                 -                                                                │
-│  gemini-2.5-flash               -                                                                │
+│  Model                   Reqs    Model usage                 Usage resets                        │
+│  ────────────────────────────────────────────────────────────────────────────────                │
+│  gemini-2.5-pro             -    ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬   90%                                      │
+│  gemini-2.5-flash           -    ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬   30%                                      │
 │                                                                                                  │
 ╰──────────────────────────────────────────────────────────────────────────────────────────────────╯
 "
@@ -193,10 +191,9 @@ exports[`<StatsDisplay /> > Quota Display > renders quota information for unused
 │    » API Time:               0s (0.0%)                                                           │
 │    » Tool Time:              0s (0.0%)                                                           │
 │                                                                                                  │
-│  Model Usage                                                                                     │
-│  Model                       Reqs             Usage remaining                                    │
-│  ────────────────────────────────────────────────────────────                                    │
-│  gemini-2.5-flash               -          50.0% resets in 2h                                    │
+│  Model                   Reqs    Model usage                 Usage resets                        │
+│  ────────────────────────────────────────────────────────────────────────────────                │
+│  gemini-2.5-flash           -    ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬   50%  6:00 AM (2h)                        │
 │                                                                                                  │
 ╰──────────────────────────────────────────────────────────────────────────────────────────────────╯
 "
@@ -218,10 +215,9 @@ exports[`<StatsDisplay /> > Quota Display > renders quota information when quota
 │    » API Time:               100ms (100.0%)                                                      │
 │    » Tool Time:              0s (0.0%)                                                           │
 │                                                                                                  │
-│  Model Usage                                                                                     │
-│  Model                       Reqs             Usage remaining                                    │
-│  ────────────────────────────────────────────────────────────                                    │
-│  gemini-2.5-pro                 1      75.0% resets in 1h 30m                                    │
+│  Model                   Reqs    Model usage                 Usage resets                        │
+│  ────────────────────────────────────────────────────────────────────────────────                │
+│  gemini-2.5-pro             1    ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬   25%  5:30 AM (1h 30m)                    │
 │                                                                                                  │
 ╰──────────────────────────────────────────────────────────────────────────────────────────────────╯
 "
@@ -283,11 +279,10 @@ exports[`<StatsDisplay /> > renders a table with two models correctly 1`] = `
 │    » API Time:               19.5s (100.0%)                                                      │
 │    » Tool Time:              0s (0.0%)                                                           │
 │                                                                                                  │
-│  Model Usage                                                                                     │
-│  Model                       Reqs   Input Tokens   Cache Reads  Output Tokens                    │
-│  ────────────────────────────────────────────────────────────────────────────                    │
-│  gemini-2.5-pro                 3            500           500          2,000                    │
-│  gemini-2.5-flash               5         15,000        10,000         15,000                    │
+│  Model                   Reqs   Input Tokens   Cache Reads  Output Tokens                        │
+│  ────────────────────────────────────────────────────────────────────────                        │
+│  gemini-2.5-pro             3            500           500          2,000                        │
+│  gemini-2.5-flash           5         15,000        10,000         15,000                        │
 │                                                                                                  │
 │  Savings Highlight: 10,500 (40.4%) of input tokens were served from the cache, reducing costs.   │
 │                                                                                                  │
@@ -312,10 +307,9 @@ exports[`<StatsDisplay /> > renders all sections when all data is present 1`] =
 │    » API Time:               100ms (44.8%)                                                       │
 │    » Tool Time:              123ms (55.2%)                                                       │
 │                                                                                                  │
-│  Model Usage                                                                                     │
-│  Model                       Reqs   Input Tokens   Cache Reads  Output Tokens                    │
-│  ────────────────────────────────────────────────────────────────────────────                    │
-│  gemini-2.5-pro                 1             50            50            100                    │
+│  Model                   Reqs   Input Tokens   Cache Reads  Output Tokens                        │
+│  ────────────────────────────────────────────────────────────────────────                        │
+│  gemini-2.5-pro             1             50            50            100                        │
 │                                                                                                  │
 │  Savings Highlight: 50 (50.0%) of input tokens were served from the cache, reducing costs.       │
 │                                                                                                  │

packages/cli/src/ui/components/messages/ShellToolMessage.tsx

@@ -58,7 +58,10 @@ export const ShellToolMessage: React.FC<ShellToolMessageProps> = ({
   borderColor,
 
   borderDimColor,
+
   isExpandable,
+
+  originalRequestName,
 }) => {
   const {
     activePtyId: activeShellPtyId,
@@ -129,6 +132,7 @@ export const ShellToolMessage: React.FC<ShellToolMessageProps> = ({
           status={status}
           description={description}
           emphasis={emphasis}
+          originalRequestName={originalRequestName}
         />
 
         <FocusHint

packages/cli/src/ui/components/messages/ToolConfirmationMessage.test.tsx

@@ -520,4 +520,77 @@ describe('ToolConfirmationMessage', () => {
     expect(output).toMatchSnapshot();
     unmount();
   });
+
+  it('should show MCP tool details expand hint for MCP confirmations', async () => {
+    const confirmationDetails: ToolCallConfirmationDetails = {
+      type: 'mcp',
+      title: 'Confirm MCP Tool',
+      serverName: 'test-server',
+      toolName: 'test-tool',
+      toolDisplayName: 'Test Tool',
+      toolArgs: {
+        url: 'https://www.google.co.jp',
+      },
+      toolDescription: 'Navigates browser to a URL.',
+      toolParameterSchema: {
+        type: 'object',
+        properties: {
+          url: {
+            type: 'string',
+            description: 'Destination URL',
+          },
+        },
+        required: ['url'],
+      },
+      onConfirm: vi.fn(),
+    };
+
+    const { lastFrame, waitUntilReady, unmount } = renderWithProviders(
+      <ToolConfirmationMessage
+        callId="test-call-id"
+        confirmationDetails={confirmationDetails}
+        config={mockConfig}
+        availableTerminalHeight={30}
+        terminalWidth={80}
+      />,
+    );
+    await waitUntilReady();
+
+    const output = lastFrame();
+    expect(output).toContain('MCP Tool Details:');
+    expect(output).toContain('(press Ctrl+O to expand MCP tool details)');
+    expect(output).not.toContain('https://www.google.co.jp');
+    expect(output).not.toContain('Navigates browser to a URL.');
+    unmount();
+  });
+
+  it('should omit empty MCP invocation arguments from details', async () => {
+    const confirmationDetails: ToolCallConfirmationDetails = {
+      type: 'mcp',
+      title: 'Confirm MCP Tool',
+      serverName: 'test-server',
+      toolName: 'test-tool',
+      toolDisplayName: 'Test Tool',
+      toolArgs: {},
+      toolDescription: 'No arguments required.',
+      onConfirm: vi.fn(),
+    };
+
+    const { lastFrame, waitUntilReady, unmount } = renderWithProviders(
+      <ToolConfirmationMessage
+        callId="test-call-id"
+        confirmationDetails={confirmationDetails}
+        config={mockConfig}
+        availableTerminalHeight={30}
+        terminalWidth={80}
+      />,
+    );
+    await waitUntilReady();
+
+    const output = lastFrame();
+    expect(output).toContain('MCP Tool Details:');
+    expect(output).toContain('(press Ctrl+O to expand MCP tool details)');
+    expect(output).not.toContain('Invocation Arguments:');
+    unmount();
+  });
 });

packages/cli/src/ui/components/messages/ToolConfirmationMessage.tsx

@@ -5,7 +5,7 @@
  */
 
 import type React from 'react';
-import { useMemo, useCallback } from 'react';
+import { useMemo, useCallback, useState } from 'react';
 import { Box, Text } from 'ink';
 import { DiffRenderer } from './DiffRenderer.js';
 import { RenderInline } from '../../utils/InlineMarkdownRenderer.js';
@@ -29,6 +29,7 @@ import { useKeypress } from '../../hooks/useKeypress.js';
 import { theme } from '../../semantic-colors.js';
 import { useSettings } from '../../contexts/SettingsContext.js';
 import { keyMatchers, Command } from '../../keyMatchers.js';
+import { formatCommand } from '../../utils/keybindingUtils.js';
 import {
   REDIRECTION_WARNING_NOTE_LABEL,
   REDIRECTION_WARNING_NOTE_TEXT,
@@ -64,6 +65,17 @@ export const ToolConfirmationMessage: React.FC<
   terminalWidth,
 }) => {
   const { confirm, isDiffingEnabled } = useToolActions();
+  const [mcpDetailsExpansionState, setMcpDetailsExpansionState] = useState<{
+    callId: string;
+    expanded: boolean;
+  }>({
+    callId,
+    expanded: false,
+  });
+  const isMcpToolDetailsExpanded =
+    mcpDetailsExpansionState.callId === callId
+      ? mcpDetailsExpansionState.expanded
+      : false;
 
   const settings = useSettings();
   const allowPermanentApproval =
@@ -86,9 +98,81 @@ export const ToolConfirmationMessage: React.FC<
     [confirm, callId],
   );
 
+  const mcpToolDetailsText = useMemo(() => {
+    if (confirmationDetails.type !== 'mcp') {
+      return null;
+    }
+
+    const detailsLines: string[] = [];
+    const hasNonEmptyToolArgs =
+      confirmationDetails.toolArgs !== undefined &&
+      !(
+        typeof confirmationDetails.toolArgs === 'object' &&
+        confirmationDetails.toolArgs !== null &&
+        Object.keys(confirmationDetails.toolArgs).length === 0
+      );
+    if (hasNonEmptyToolArgs) {
+      let argsText: string;
+      try {
+        argsText = stripUnsafeCharacters(
+          JSON.stringify(confirmationDetails.toolArgs, null, 2),
+        );
+      } catch {
+        argsText = '[unserializable arguments]';
+      }
+      detailsLines.push('Invocation Arguments:');
+      detailsLines.push(argsText);
+    }
+
+    const description = confirmationDetails.toolDescription?.trim();
+    if (description) {
+      if (detailsLines.length > 0) {
+        detailsLines.push('');
+      }
+      detailsLines.push('Description:');
+      detailsLines.push(stripUnsafeCharacters(description));
+    }
+
+    if (confirmationDetails.toolParameterSchema !== undefined) {
+      let schemaText: string;
+      try {
+        schemaText = stripUnsafeCharacters(
+          JSON.stringify(confirmationDetails.toolParameterSchema, null, 2),
+        );
+      } catch {
+        schemaText = '[unserializable schema]';
+      }
+      if (detailsLines.length > 0) {
+        detailsLines.push('');
+      }
+      detailsLines.push('Input Schema:');
+      detailsLines.push(schemaText);
+    }
+
+    if (detailsLines.length === 0) {
+      return null;
+    }
+
+    return detailsLines.join('\n');
+  }, [confirmationDetails]);
+
+  const hasMcpToolDetails = !!mcpToolDetailsText;
+  const expandDetailsHintKey = formatCommand(Command.SHOW_MORE_LINES);
+
   useKeypress(
     (key) => {
       if (!isFocused) return false;
+      if (
+        confirmationDetails.type === 'mcp' &&
+        hasMcpToolDetails &&
+        keyMatchers[Command.SHOW_MORE_LINES](key)
+      ) {
+        setMcpDetailsExpansionState({
+          callId,
+          expanded: !isMcpToolDetailsExpanded,
+        });
+        return true;
+      }
       if (keyMatchers[Command.ESCAPE](key)) {
         handleConfirm(ToolConfirmationOutcome.Cancel);
         return true;
@@ -100,7 +184,7 @@ export const ToolConfirmationMessage: React.FC<
       }
       return false;
     },
-    { isActive: isFocused },
+    { isActive: isFocused, priority: true },
   );
 
   const handleSelect = useCallback(
@@ -504,12 +588,31 @@ export const ToolConfirmationMessage: React.FC<
 
       bodyContent = (
         <Box flexDirection="column">
-          <Text color={theme.text.link}>
-            MCP Server: {sanitizeForDisplay(mcpProps.serverName)}
-          </Text>
-          <Text color={theme.text.link}>
-            Tool: {sanitizeForDisplay(mcpProps.toolName)}
-          </Text>
+          <>
+            <Text color={theme.text.link}>
+              MCP Server: {sanitizeForDisplay(mcpProps.serverName)}
+            </Text>
+            <Text color={theme.text.link}>
+              Tool: {sanitizeForDisplay(mcpProps.toolName)}
+            </Text>
+          </>
+          {hasMcpToolDetails && (
+            <Box flexDirection="column" marginTop={1}>
+              <Text color={theme.text.primary}>MCP Tool Details:</Text>
+              {isMcpToolDetailsExpanded ? (
+                <>
+                  <Text color={theme.text.secondary}>
+                    (press {expandDetailsHintKey} to collapse MCP tool details)
+                  </Text>
+                  <Text color={theme.text.link}>{mcpToolDetailsText}</Text>
+                </>
+              ) : (
+                <Text color={theme.text.secondary}>
+                  (press {expandDetailsHintKey} to expand MCP tool details)
+                </Text>
+              )}
+            </Box>
+          )}
         </Box>
       );
     }
@@ -522,8 +625,17 @@ export const ToolConfirmationMessage: React.FC<
     terminalWidth,
     handleConfirm,
     deceptiveUrlWarningText,
+    isMcpToolDetailsExpanded,
+    hasMcpToolDetails,
+    mcpToolDetailsText,
+    expandDetailsHintKey,
   ]);
 
+  const bodyOverflowDirection: 'top' | 'bottom' =
+    confirmationDetails.type === 'mcp' && isMcpToolDetailsExpanded
+      ? 'bottom'
+      : 'top';
+
   if (confirmationDetails.type === 'edit') {
     if (confirmationDetails.isModifying) {
       return (
@@ -559,7 +671,7 @@ export const ToolConfirmationMessage: React.FC<
             <MaxSizedBox
               maxHeight={availableBodyContentHeight()}
               maxWidth={terminalWidth}
-              overflowDirection="top"
+              overflowDirection={bodyOverflowDirection}
             >
               {bodyContent}
             </MaxSizedBox>

packages/cli/src/ui/components/messages/ToolMessage.tsx

@@ -57,6 +57,7 @@ export const ToolMessage: React.FC<ToolMessageProps> = ({
   config,
   progressMessage,
   progressPercent,
+  originalRequestName,
 }) => {
   const isThisShellFocused = checkIsShellFocused(
     name,
@@ -93,6 +94,7 @@ export const ToolMessage: React.FC<ToolMessageProps> = ({
           emphasis={emphasis}
           progressMessage={progressMessage}
           progressPercent={progressPercent}
+          originalRequestName={originalRequestName}
         />
         <FocusHint
           shouldShowFocusHint={shouldShowFocusHint}

packages/cli/src/ui/components/messages/ToolShared.tsx

@@ -189,6 +189,7 @@ type ToolInfoProps = {
   emphasis: TextEmphasis;
   progressMessage?: string;
   progressPercent?: number;
+  originalRequestName?: string;
 };
 
 export const ToolInfo: React.FC<ToolInfoProps> = ({
@@ -198,6 +199,7 @@ export const ToolInfo: React.FC<ToolInfoProps> = ({
   emphasis,
   progressMessage,
   progressPercent,
+  originalRequestName,
 }) => {
   const status = mapCoreStatusToDisplayStatus(coreStatus);
   const nameColor = React.useMemo<string>(() => {
@@ -242,6 +244,12 @@ export const ToolInfo: React.FC<ToolInfoProps> = ({
         <Text color={nameColor} bold>
           {name}
         </Text>
+        {originalRequestName && originalRequestName !== name && (
+          <Text color={theme.text.secondary} italic>
+            {' '}
+            (redirection from {originalRequestName})
+          </Text>
+        )}
         {!isCompletedAskUser && (
           <>
             {' '}

packages/cli/src/ui/hooks/toolMapping.test.ts

@@ -275,5 +275,20 @@ describe('toolMapping', () => {
       expect(result.tools[0].resultDisplay).toBeUndefined();
       expect(result.tools[0].status).toBe(CoreToolCallStatus.Scheduled);
     });
+
+    it('propagates originalRequestName correctly', () => {
+      const toolCall: ScheduledToolCall = {
+        status: CoreToolCallStatus.Scheduled,
+        request: {
+          ...mockRequest,
+          originalRequestName: 'original_tool',
+        },
+        tool: mockTool,
+        invocation: mockInvocation,
+      };
+
+      const result = mapToDisplay(toolCall);
+      expect(result.tools[0].originalRequestName).toBe('original_tool');
+    });
   });
 });

packages/cli/src/ui/hooks/toolMapping.ts

@@ -107,6 +107,7 @@ export function mapToDisplay(
       progressMessage,
       progressPercent,
       approvalMode: call.approvalMode,
+      originalRequestName: call.request.originalRequestName,
     };
   });
 

packages/cli/src/ui/hooks/useToolScheduler.test.ts

@@ -13,6 +13,7 @@ import {
   Scheduler,
   type Config,
   type MessageBus,
+  type ExecutingToolCall,
   type CompletedToolCall,
   type ToolCallsUpdateMessage,
   type AnyDeclarativeTool,
@@ -110,7 +111,7 @@ describe('useToolScheduler', () => {
       tool: createMockTool(),
       invocation: createMockInvocation(),
       liveOutput: 'Loading...',
-    };
+    } as ExecutingToolCall;
 
     act(() => {
       void mockMessageBus.publish({
@@ -405,4 +406,62 @@ describe('useToolScheduler', () => {
       toolCalls.find((t) => t.request.callId === 'call-sub')?.schedulerId,
     ).toBe('subagent-1');
   });
+
+  it('adapts success/error status to executing when a tail call is present', () => {
+    vi.useFakeTimers();
+    const { result } = renderHook(() =>
+      useToolScheduler(
+        vi.fn().mockResolvedValue(undefined),
+        mockConfig,
+        () => undefined,
+      ),
+    );
+
+    const startTime = Date.now();
+    vi.advanceTimersByTime(1000);
+
+    const mockToolCall = {
+      status: CoreToolCallStatus.Success as const,
+      request: {
+        callId: 'call-1',
+        name: 'test_tool',
+        args: {},
+        isClientInitiated: false,
+        prompt_id: 'p1',
+      },
+      tool: createMockTool(),
+      invocation: createMockInvocation(),
+      response: {
+        callId: 'call-1',
+        resultDisplay: 'OK',
+        responseParts: [],
+        error: undefined,
+        errorType: undefined,
+      },
+      tailToolCallRequest: {
+        name: 'tail_tool',
+        args: {},
+        isClientInitiated: false,
+        prompt_id: '123',
+      },
+    };
+
+    act(() => {
+      void mockMessageBus.publish({
+        type: MessageBusType.TOOL_CALLS_UPDATE,
+        toolCalls: [mockToolCall],
+        schedulerId: ROOT_SCHEDULER_ID,
+      } as ToolCallsUpdateMessage);
+    });
+
+    const [toolCalls, , , , , lastOutputTime] = result.current;
+
+    // Check if status has been adapted to 'executing'
+    expect(toolCalls[0].status).toBe(CoreToolCallStatus.Executing);
+
+    // Check if lastOutputTime was updated due to the transitional state
+    expect(lastOutputTime).toBeGreaterThan(startTime);
+
+    vi.useRealTimers();
+  });
 });

packages/cli/src/ui/hooks/useToolScheduler.ts

@@ -14,6 +14,7 @@ import {
   Scheduler,
   type EditorType,
   type ToolCallsUpdateMessage,
+  CoreToolCallStatus,
 } from '@google/gemini-cli-core';
 import { useCallback, useState, useMemo, useEffect, useRef } from 'react';
 
@@ -115,7 +116,16 @@ export function useToolScheduler(
   useEffect(() => {
     const handler = (event: ToolCallsUpdateMessage) => {
       // Update output timer for UI spinners (Side Effect)
-      if (event.toolCalls.some((tc) => tc.status === 'executing')) {
+      const hasExecuting = event.toolCalls.some(
+        (tc) =>
+          tc.status === CoreToolCallStatus.Executing ||
+          ((tc.status === CoreToolCallStatus.Success ||
+            tc.status === CoreToolCallStatus.Error) &&
+            'tailToolCallRequest' in tc &&
+            tc.tailToolCallRequest != null),
+      );
+
+      if (hasExecuting) {
         setLastToolOutputTime(Date.now());
       }
 
@@ -238,9 +248,23 @@ function adaptToolCalls(
     const prev = prevMap.get(coreCall.request.callId);
     const responseSubmittedToGemini = prev?.responseSubmittedToGemini ?? false;
 
+    let status = coreCall.status;
+    // If a tool call has completed but scheduled a tail call, it is in a transitional
+    // state. Force the UI to render it as "executing".
+    if (
+      (status === CoreToolCallStatus.Success ||
+        status === CoreToolCallStatus.Error) &&
+      'tailToolCallRequest' in coreCall &&
+      coreCall.tailToolCallRequest != null
+    ) {
+      status = CoreToolCallStatus.Executing;
+    }
+
+    // eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion
     return {
       ...coreCall,
+      status,
       responseSubmittedToGemini,
-    };
+    } as TrackedToolCall;
   });
 }

packages/cli/src/ui/keyMatchers.test.ts

@@ -352,7 +352,6 @@ describe('keyMatchers', () => {
         createKey('l', { ctrl: true }),
       ],
     },
-
     // Shell commands
     {
       command: Command.REVERSE_SEARCH,

packages/cli/src/ui/types.ts

@@ -110,6 +110,7 @@ export interface IndividualToolCallDisplay {
   approvalMode?: ApprovalMode;
   progressMessage?: string;
   progressPercent?: number;
+  originalRequestName?: string;
 }
 
 export interface CompressionProps {

packages/cli/src/ui/utils/displayUtils.ts

@@ -19,6 +19,9 @@ export const CACHE_EFFICIENCY_MEDIUM = 15;
 export const QUOTA_THRESHOLD_HIGH = 20;
 export const QUOTA_THRESHOLD_MEDIUM = 5;
 
+export const QUOTA_USED_WARNING_THRESHOLD = 80;
+export const QUOTA_USED_CRITICAL_THRESHOLD = 95;
+
 // --- Color Logic ---
 export const getStatusColor = (
   value: number,
@@ -36,3 +39,19 @@ export const getStatusColor = (
   }
   return options.defaultColor ?? theme.status.error;
 };
+
+/**
+ * Gets the status color based on "used" percentage (where higher is worse).
+ */
+export const getUsedStatusColor = (
+  usedPercentage: number,
+  thresholds: { warning: number; critical: number },
+) => {
+  if (usedPercentage >= thresholds.critical) {
+    return theme.status.error;
+  }
+  if (usedPercentage >= thresholds.warning) {
+    return theme.status.warning;
+  }
+  return undefined;
+};

packages/cli/src/ui/utils/formatters.test.ts

@@ -10,9 +10,46 @@ import {
   formatBytes,
   formatTimeAgo,
   stripReferenceContent,
+  formatResetTime,
 } from './formatters.js';
 
 describe('formatters', () => {
+  describe('formatResetTime', () => {
+    const NOW = new Date('2025-01-01T12:00:00Z');
+
+    beforeEach(() => {
+      vi.useFakeTimers();
+      vi.setSystemTime(NOW);
+    });
+
+    afterEach(() => {
+      vi.useRealTimers();
+    });
+
+    it('should format full time correctly', () => {
+      const resetTime = new Date(NOW.getTime() + 90 * 60 * 1000).toISOString(); // 1h 30m
+      const result = formatResetTime(resetTime);
+      expect(result).toMatch(/1 hour 30 minutes at \d{1,2}:\d{2} [AP]M/);
+    });
+
+    it('should format terse time correctly', () => {
+      const resetTime = new Date(NOW.getTime() + 90 * 60 * 1000).toISOString(); // 1h 30m
+      expect(formatResetTime(resetTime, 'terse')).toBe('1h 30m');
+      expect(formatResetTime(resetTime, true)).toBe('1h 30m');
+    });
+
+    it('should format column time correctly', () => {
+      const resetTime = new Date(NOW.getTime() + 90 * 60 * 1000).toISOString(); // 1h 30m
+      const result = formatResetTime(resetTime, 'column');
+      expect(result).toMatch(/\d{1,2}:\d{2} [AP]M \(1h 30m\)/);
+    });
+
+    it('should handle zero or negative diff by returning empty string', () => {
+      const resetTime = new Date(NOW.getTime() - 1000).toISOString();
+      expect(formatResetTime(resetTime)).toBe('');
+    });
+  });
+
   describe('formatBytes', () => {
     it('should format bytes into KB', () => {
       expect(formatBytes(12345)).toBe('12.1 KB');

packages/cli/src/ui/utils/formatters.ts

@@ -98,26 +98,58 @@ export function stripReferenceContent(text: string): string {
   return text.replace(pattern, '').trim();
 }
 
-export const formatResetTime = (resetTime: string): string => {
-  const diff = new Date(resetTime).getTime() - Date.now();
+export const formatResetTime = (
+  resetTime: string | undefined,
+  format: 'terse' | 'column' | 'full' | boolean = false,
+): string => {
+  if (!resetTime) return '';
+  const resetDate = new Date(resetTime);
+  if (isNaN(resetDate.getTime())) return '';
+
+  const diff = resetDate.getTime() - Date.now();
   if (diff <= 0) return '';
 
   const totalMinutes = Math.ceil(diff / (1000 * 60));
   const hours = Math.floor(totalMinutes / 60);
   const minutes = totalMinutes % 60;
 
-  const fmt = (val: number, unit: 'hour' | 'minute') =>
-    new Intl.NumberFormat('en', {
-      style: 'unit',
-      unit,
-      unitDisplay: 'narrow',
-    }).format(val);
+  const isTerse = format === 'terse' || format === true;
+  const isColumn = format === 'column';
 
-  if (hours > 0 && minutes > 0) {
-    return `resets in ${fmt(hours, 'hour')} ${fmt(minutes, 'minute')}`;
-  } else if (hours > 0) {
-    return `resets in ${fmt(hours, 'hour')}`;
+  if (isTerse || isColumn) {
+    const hoursStr = hours > 0 ? `${hours}h` : '';
+    const minutesStr = minutes > 0 ? `${minutes}m` : '';
+    const duration =
+      hoursStr && minutesStr
+        ? `${hoursStr} ${minutesStr}`
+        : hoursStr || minutesStr;
+
+    if (isColumn) {
+      const timeStr = new Intl.DateTimeFormat('en-US', {
+        hour: 'numeric',
+        minute: 'numeric',
+      }).format(resetDate);
+      return duration ? `${timeStr} (${duration})` : timeStr;
+    }
+
+    return duration;
   }
 
-  return `resets in ${fmt(minutes, 'minute')}`;
+  let duration = '';
+  if (hours > 0) {
+    duration = `${hours} hour${hours > 1 ? 's' : ''}`;
+    if (minutes > 0) {
+      duration += ` ${minutes} minute${minutes > 1 ? 's' : ''}`;
+    }
+  } else {
+    duration = `${minutes} minute${minutes > 1 ? 's' : ''}`;
+  }
+
+  const timeStr = new Intl.DateTimeFormat('en-US', {
+    hour: 'numeric',
+    minute: 'numeric',
+    timeZoneName: 'short',
+  }).format(resetDate);
+
+  return `${duration} at ${timeStr}`;
 };

packages/cli/src/utils/activityLogger.ts

@@ -22,13 +22,82 @@ import WebSocket from 'ws';
 const ACTIVITY_ID_HEADER = 'x-activity-request-id';
 const MAX_BUFFER_SIZE = 100;
 
-/** Type guard: Array.isArray doesn't narrow readonly arrays in TS 5.8 */
 function isHeaderRecord(
   h: http.OutgoingHttpHeaders | readonly string[],
 ): h is http.OutgoingHttpHeaders {
   return !Array.isArray(h);
 }
 
+function isRequestOptions(value: unknown): value is http.RequestOptions {
+  return (
+    typeof value === 'object' &&
+    value !== null &&
+    !(value instanceof URL) &&
+    !Array.isArray(value)
+  );
+}
+
+function isIncomingMessageCallback(
+  value: unknown,
+): value is (res: http.IncomingMessage) => void {
+  return typeof value === 'function';
+}
+
+type HttpRequestArgs =
+  | []
+  | [
+      url: string | URL | http.RequestOptions,
+      options?: http.RequestOptions | ((res: http.IncomingMessage) => void),
+      callback?: (res: http.IncomingMessage) => void,
+    ];
+
+function callHttpRequest(
+  originalFn: typeof http.request,
+  args: HttpRequestArgs,
+): http.ClientRequest {
+  if (args.length === 0) {
+    return originalFn({});
+  }
+  if (args.length === 1) {
+    const first = args[0];
+    if (typeof first === 'string' || first instanceof URL) {
+      return originalFn(first);
+    }
+    if (isRequestOptions(first)) {
+      return originalFn(first);
+    }
+    return originalFn({});
+  }
+  if (args.length === 2) {
+    const first = args[0];
+    const second = args[1];
+    if (typeof first === 'string' || first instanceof URL) {
+      if (isIncomingMessageCallback(second)) {
+        return originalFn(first, second);
+      }
+      if (isRequestOptions(second)) {
+        return originalFn(first, second);
+      }
+    }
+    if (isRequestOptions(first) && isIncomingMessageCallback(second)) {
+      return originalFn(first, second);
+    }
+  }
+  if (args.length === 3) {
+    const first = args[0];
+    const second = args[1];
+    const third = args[2];
+    if (
+      (typeof first === 'string' || first instanceof URL) &&
+      isRequestOptions(second) &&
+      isIncomingMessageCallback(third)
+    ) {
+      return originalFn(first, second, third);
+    }
+  }
+  return originalFn({});
+}
+
 export interface NetworkLog {
   id: string;
   timestamp: number;
@@ -364,7 +433,7 @@ export class ActivityLogger extends EventEmitter {
 
     const wrapRequest = (
       originalFn: typeof http.request,
-      args: unknown[],
+      args: HttpRequestArgs,
       protocol: string,
     ) => {
       const firstArg = args[0];
@@ -373,8 +442,10 @@ export class ActivityLogger extends EventEmitter {
         options = firstArg;
       } else if (firstArg instanceof URL) {
         options = firstArg;
+      } else if (firstArg && typeof firstArg === 'object') {
+        options = isRequestOptions(firstArg) ? firstArg : {};
       } else {
-        options = (firstArg ?? {}) as http.RequestOptions;
+        options = {};
       }
 
       let url = '';
@@ -393,9 +464,9 @@ export class ActivityLogger extends EventEmitter {
           `${protocol}//${options.hostname || options.host || 'localhost'}${options.path || '/'}`;
       }
 
-      if (url.includes('127.0.0.1') || url.includes('localhost'))
-        // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-type-assertion
-        return originalFn.apply(http, args as any);
+      if (url.includes('127.0.0.1') || url.includes('localhost')) {
+        return callHttpRequest(originalFn, args);
+      }
 
       const rawHeaders =
         typeof options === 'object' &&
@@ -410,24 +481,23 @@ export class ActivityLogger extends EventEmitter {
 
       if (headers[ACTIVITY_ID_HEADER]) {
         delete headers[ACTIVITY_ID_HEADER];
-        // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-type-assertion
-        return originalFn.apply(http, args as any);
+        return callHttpRequest(originalFn, args);
       }
 
       const id = Math.random().toString(36).substring(7);
       this.requestStartTimes.set(id, Date.now());
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-type-assertion
-      const req = originalFn.apply(http, args as any);
+      const req = callHttpRequest(originalFn, args);
       const requestChunks: Buffer[] = [];
 
       const oldWrite = req.write;
       const oldEnd = req.end;
 
-      req.write = function (chunk: unknown, ...etc: unknown[]) {
+      req.write = function (chunk: string | Uint8Array, ...etc: unknown[]) {
         if (chunk) {
           const encoding =
-            // eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion
-            typeof etc[0] === 'string' ? (etc[0] as BufferEncoding) : undefined;
+            typeof etc[0] === 'string' && Buffer.isEncoding(etc[0])
+              ? etc[0]
+              : undefined;
           requestChunks.push(
             Buffer.isBuffer(chunk)
               ? chunk
@@ -438,19 +508,21 @@ export class ActivityLogger extends EventEmitter {
                   ),
           );
         }
-        // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-type-assertion
-        return oldWrite.apply(this, [chunk, ...etc] as any);
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-type-assertion, @typescript-eslint/no-unsafe-return
+        return (oldWrite as any).apply(this, [chunk, ...etc]);
       };
 
       req.end = function (
         this: http.ClientRequest,
-        chunk: unknown,
+        chunkOrCb?: string | Uint8Array | (() => void),
         ...etc: unknown[]
       ) {
-        if (chunk && typeof chunk !== 'function') {
+        const chunk = typeof chunkOrCb === 'function' ? undefined : chunkOrCb;
+        if (chunk) {
           const encoding =
-            // eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion
-            typeof etc[0] === 'string' ? (etc[0] as BufferEncoding) : undefined;
+            typeof etc[0] === 'string' && Buffer.isEncoding(etc[0])
+              ? etc[0]
+              : undefined;
           requestChunks.push(
             Buffer.isBuffer(chunk)
               ? chunk
@@ -473,7 +545,7 @@ export class ActivityLogger extends EventEmitter {
           pending: true,
         });
         // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-type-assertion, @typescript-eslint/no-unsafe-return
-        return (oldEnd as any).apply(this, [chunk, ...etc]);
+        return (oldEnd as any).apply(this, [chunkOrCb, ...etc]);
       };
 
       req.on('response', (res: http.IncomingMessage) => {
@@ -545,12 +617,44 @@ export class ActivityLogger extends EventEmitter {
       return req;
     };
 
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-type-assertion
-    (http as any).request = (...args: unknown[]) =>
-      wrapRequest(originalRequest, args, 'http:');
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-type-assertion
-    (https as any).request = (...args: unknown[]) =>
-      wrapRequest(originalHttpsRequest as typeof http.request, args, 'https:');
+    Object.defineProperty(http, 'request', {
+      value: (
+        url: string | URL | http.RequestOptions,
+        options?: http.RequestOptions | ((res: http.IncomingMessage) => void),
+        callback?: (res: http.IncomingMessage) => void,
+      ): http.ClientRequest => {
+        const args: HttpRequestArgs =
+          callback !== undefined
+            ? [url, options, callback]
+            : options !== undefined
+              ? [url, options]
+              : [url];
+        return wrapRequest(originalRequest, args, 'http:');
+      },
+      writable: true,
+      configurable: true,
+    });
+    Object.defineProperty(https, 'request', {
+      value: (
+        url: string | URL | http.RequestOptions,
+        options?: http.RequestOptions | ((res: http.IncomingMessage) => void),
+        callback?: (res: http.IncomingMessage) => void,
+      ): http.ClientRequest => {
+        const args: HttpRequestArgs =
+          callback !== undefined
+            ? [url, options, callback]
+            : options !== undefined
+              ? [url, options]
+              : [url];
+        return wrapRequest(
+          originalHttpsRequest as typeof http.request,
+          args,
+          'https:',
+        );
+      },
+      writable: true,
+      configurable: true,
+    });
   }
 
   logConsole(payload: ConsoleLogPayload) {

packages/core/src/agents/generalist-agent.test.ts

@@ -4,13 +4,21 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import { describe, it, expect, vi } from 'vitest';
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
 import { GeneralistAgent } from './generalist-agent.js';
 import { makeFakeConfig } from '../test-utils/config.js';
 import type { ToolRegistry } from '../tools/tool-registry.js';
 import type { AgentRegistry } from './registry.js';
 
 describe('GeneralistAgent', () => {
+  beforeEach(() => {
+    vi.stubEnv('GEMINI_SYSTEM_MD', '');
+  });
+
+  afterEach(() => {
+    vi.unstubAllEnvs();
+  });
+
   it('should create a valid generalist agent definition', () => {
     const config = makeFakeConfig();
     vi.spyOn(config, 'getToolRegistry').mockReturnValue({

packages/core/src/config/config.ts

@@ -132,6 +132,11 @@ import { UserHintService } from './userHintService.js';
 import { WORKSPACE_POLICY_TIER } from '../policy/config.js';
 import { loadPoliciesFromToml } from '../policy/toml-loader.js';
 
+import { CheckerRunner } from '../safety/checker-runner.js';
+import { ContextBuilder } from '../safety/context-builder.js';
+import { CheckerRegistry } from '../safety/registry.js';
+import { ConsecaSafetyChecker } from '../safety/conseca/conseca.js';
+
 export interface AccessibilitySettings {
   /** @deprecated Use ui.loadingPhrases instead. */
   enableLoadingPhrases?: boolean;
@@ -513,6 +518,7 @@ export interface ConfigParameters {
     adminSkillsEnabled?: boolean;
     agents?: AgentSettings;
   }>;
+  enableConseca?: boolean;
 }
 
 export class Config {
@@ -540,6 +546,7 @@ export class Config {
   private workspaceContext: WorkspaceContext;
   private readonly debugMode: boolean;
   private readonly question: string | undefined;
+  readonly enableConseca: boolean;
 
   private readonly coreTools: string[] | undefined;
   /** @deprecated Use Policy Engine instead */
@@ -868,13 +875,35 @@ export class Config {
     this.recordResponses = params.recordResponses;
     this.fileExclusions = new FileExclusions(this);
     this.eventEmitter = params.eventEmitter;
-    this.policyEngine = new PolicyEngine({
-      ...params.policyEngineConfig,
-      approvalMode:
-        params.approvalMode ?? params.policyEngineConfig?.approvalMode,
+    this.enableConseca = params.enableConseca ?? false;
+
+    // Initialize Safety Infrastructure
+    const contextBuilder = new ContextBuilder(this);
+    const checkersPath = this.targetDir;
+    // The checkersPath  is used to resolve external checkers. Since we do not have any external checkers currently, it is set to the targetDir.
+    const checkerRegistry = new CheckerRegistry(checkersPath);
+    const checkerRunner = new CheckerRunner(contextBuilder, checkerRegistry, {
+      checkersPath,
+      timeout: 30000, // 30 seconds to allow for LLM-based checkers
     });
     this.policyUpdateConfirmationRequest =
       params.policyUpdateConfirmationRequest;
+
+    this.policyEngine = new PolicyEngine(
+      {
+        ...params.policyEngineConfig,
+        approvalMode:
+          params.approvalMode ?? params.policyEngineConfig?.approvalMode,
+      },
+      checkerRunner,
+    );
+
+    // Register Conseca if enabled
+    if (this.enableConseca) {
+      debugLogger.log('[SAFETY] Registering Conseca Safety Checker');
+      ConsecaSafetyChecker.getInstance().setConfig(this);
+    }
+
     this.messageBus = new MessageBus(this.policyEngine, this.debugMode);
     this.acknowledgedAgentsService = new AcknowledgedAgentsService();
     this.skillManager = new SkillManager();

packages/core/src/confirmation-bus/types.ts

@@ -95,6 +95,9 @@ export type SerializableConfirmationDetails =
       serverName: string;
       toolName: string;
       toolDisplayName: string;
+      toolArgs?: Record<string, unknown>;
+      toolDescription?: string;
+      toolParameterSchema?: unknown;
     }
   | {
       type: 'ask_user';

packages/core/src/core/coreToolHookTriggers.ts

@@ -75,6 +75,7 @@ export async function executeToolWithHooks(
   shellExecutionConfig?: ShellExecutionConfig,
   setPidCallback?: (pid: number) => void,
   config?: Config,
+  originalRequestName?: string,
 ): Promise<ToolResult> {
   // eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion
   const toolInput = (invocation.params || {}) as Record<string, unknown>;
@@ -90,6 +91,7 @@ export async function executeToolWithHooks(
       toolName,
       toolInput,
       mcpContext,
+      originalRequestName,
     );
 
     // Check if hook requested to stop entire agent execution
@@ -196,6 +198,7 @@ export async function executeToolWithHooks(
         error: toolResult.error,
       },
       mcpContext,
+      originalRequestName,
     );
 
     // Check if hook requested to stop entire agent execution
@@ -242,6 +245,12 @@ export async function executeToolWithHooks(
         toolResult.llmContent = wrappedContext;
       }
     }
+
+    // Check if the hook requested a tail tool call
+    const tailToolCallRequest = afterOutput?.getTailToolCallRequest();
+    if (tailToolCallRequest) {
+      toolResult.tailToolCallRequest = tailToolCallRequest;
+    }
   }
 
   return toolResult;

packages/core/src/hooks/hookEventHandler.ts

@@ -76,12 +76,16 @@ export class HookEventHandler {
     toolName: string,
     toolInput: Record<string, unknown>,
     mcpContext?: McpToolContext,
+    originalRequestName?: string,
   ): Promise<AggregatedHookResult> {
     const input: BeforeToolInput = {
       ...this.createBaseInput(HookEventName.BeforeTool),
       tool_name: toolName,
       tool_input: toolInput,
       ...(mcpContext && { mcp_context: mcpContext }),
+      ...(originalRequestName && {
+        original_request_name: originalRequestName,
+      }),
     };
 
     const context: HookEventContext = { toolName };
@@ -97,6 +101,7 @@ export class HookEventHandler {
     toolInput: Record<string, unknown>,
     toolResponse: Record<string, unknown>,
     mcpContext?: McpToolContext,
+    originalRequestName?: string,
   ): Promise<AggregatedHookResult> {
     const input: AfterToolInput = {
       ...this.createBaseInput(HookEventName.AfterTool),
@@ -104,6 +109,9 @@ export class HookEventHandler {
       tool_input: toolInput,
       tool_response: toolResponse,
       ...(mcpContext && { mcp_context: mcpContext }),
+      ...(originalRequestName && {
+        original_request_name: originalRequestName,
+      }),
     };
 
     const context: HookEventContext = { toolName };

packages/core/src/hooks/hookSystem.ts

@@ -368,12 +368,14 @@ export class HookSystem {
     toolName: string,
     toolInput: Record<string, unknown>,
     mcpContext?: McpToolContext,
+    originalRequestName?: string,
   ): Promise<DefaultHookOutput | undefined> {
     try {
       const result = await this.hookEventHandler.fireBeforeToolEvent(
         toolName,
         toolInput,
         mcpContext,
+        originalRequestName,
       );
       return result.finalOutput;
     } catch (error) {
@@ -391,6 +393,7 @@ export class HookSystem {
       error: unknown;
     },
     mcpContext?: McpToolContext,
+    originalRequestName?: string,
   ): Promise<DefaultHookOutput | undefined> {
     try {
       const result = await this.hookEventHandler.fireAfterToolEvent(
@@ -398,6 +401,7 @@ export class HookSystem {
         toolInput,
         toolResponse as Record<string, unknown>,
         mcpContext,
+        originalRequestName,
       );
       return result.finalOutput;
     } catch (error) {

packages/core/src/hooks/types.ts

@@ -253,6 +253,33 @@ export class DefaultHookOutput implements HookOutput {
   shouldClearContext(): boolean {
     return false;
   }
+
+  /**
+   * Optional request to execute another tool immediately after this one.
+   * The result of this tail call will replace the original tool's response.
+   */
+  getTailToolCallRequest():
+    | {
+        name: string;
+        args: Record<string, unknown>;
+      }
+    | undefined {
+    if (
+      this.hookSpecificOutput &&
+      'tailToolCallRequest' in this.hookSpecificOutput
+    ) {
+      const request = this.hookSpecificOutput['tailToolCallRequest'];
+      if (
+        typeof request === 'object' &&
+        request !== null &&
+        !Array.isArray(request)
+      ) {
+        // eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion
+        return request as { name: string; args: Record<string, unknown> };
+      }
+    }
+    return undefined;
+  }
 }
 
 /**
@@ -430,6 +457,7 @@ export interface BeforeToolInput extends HookInput {
   tool_name: string;
   tool_input: Record<string, unknown>;
   mcp_context?: McpToolContext; // Only present for MCP tools
+  original_request_name?: string;
 }
 
 /**
@@ -450,6 +478,7 @@ export interface AfterToolInput extends HookInput {
   tool_input: Record<string, unknown>;
   tool_response: Record<string, unknown>;
   mcp_context?: McpToolContext; // Only present for MCP tools
+  original_request_name?: string;
 }
 
 /**
@@ -459,6 +488,14 @@ export interface AfterToolOutput extends HookOutput {
   hookSpecificOutput?: {
     hookEventName: 'AfterTool';
     additionalContext?: string;
+    /**
+     * Optional request to execute another tool immediately after this one.
+     * The result of this tail call will replace the original tool's response.
+     */
+    tailToolCallRequest?: {
+      name: string;
+      args: Record<string, unknown>;
+    };
   };
 }
 

packages/core/src/policy/policies/conseca.toml

@@ -0,0 +1,6 @@
+[[safety_checker]]
+toolName = "*"
+priority = 100
+[safety_checker.checker]
+type = "in-process"
+name = "conseca"

packages/core/src/policy/policy-engine.ts

@@ -113,7 +113,10 @@ function ruleMatches(
 
   // Check tool name if specified
   if (rule.toolName) {
-    if (isWildcardPattern(rule.toolName)) {
+    // Support wildcard patterns: "serverName__*" matches "serverName__anyTool"
+    if (rule.toolName === '*') {
+      // Match all tools
+    } else if (isWildcardPattern(rule.toolName)) {
       if (
         !toolCall.name ||
         !matchesWildcard(rule.toolName, toolCall.name, serverName)

packages/core/src/policy/types.ts

@@ -78,6 +78,7 @@ export interface ExternalCheckerConfig {
 
 export enum InProcessCheckerType {
   ALLOWED_PATH = 'allowed-path',
+  CONSECA = 'conseca',
 }
 
 /**

packages/core/src/prompts/promptProvider.test.ts

@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
 import { PromptProvider } from './promptProvider.js';
 import type { Config } from '../config/config.js';
 import {
@@ -30,6 +30,7 @@ describe('PromptProvider', () => {
 
   beforeEach(() => {
     vi.resetAllMocks();
+    vi.stubEnv('GEMINI_SYSTEM_MD', '');
     mockConfig = {
       getToolRegistry: vi.fn().mockReturnValue({
         getAllToolNames: vi.fn().mockReturnValue([]),
@@ -54,6 +55,10 @@ describe('PromptProvider', () => {
     } as unknown as Config;
   });
 
+  afterEach(() => {
+    vi.unstubAllEnvs();
+  });
+
   it('should handle multiple context filenames in the system prompt', () => {
     vi.mocked(getAllGeminiMdFilenames).mockReturnValue([
       DEFAULT_CONTEXT_FILENAME,

packages/core/src/safety/conseca/conseca.test.ts

@@ -0,0 +1,279 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, it, expect, beforeEach, vi } from 'vitest';
+import { ConsecaSafetyChecker } from './conseca.js';
+import { SafetyCheckDecision } from '../protocol.js';
+import type { SafetyCheckInput } from '../protocol.js';
+import {
+  logConsecaPolicyGeneration,
+  logConsecaVerdict,
+} from '../../telemetry/index.js';
+import type { Config } from '../../config/config.js';
+import * as policyGenerator from './policy-generator.js';
+import * as policyEnforcer from './policy-enforcer.js';
+
+vi.mock('../../telemetry/index.js', () => ({
+  logConsecaPolicyGeneration: vi.fn(),
+  ConsecaPolicyGenerationEvent: vi.fn(),
+  logConsecaVerdict: vi.fn(),
+  ConsecaVerdictEvent: vi.fn(),
+}));
+
+vi.mock('./policy-generator.js');
+vi.mock('./policy-enforcer.js');
+
+describe('ConsecaSafetyChecker', () => {
+  let checker: ConsecaSafetyChecker;
+  let mockConfig: Config;
+
+  beforeEach(() => {
+    // Reset singleton instance to ensure clean state
+    ConsecaSafetyChecker.resetInstance();
+    // Get the fresh singleton instance
+    checker = ConsecaSafetyChecker.getInstance();
+
+    mockConfig = {
+      enableConseca: true,
+      getToolRegistry: vi.fn().mockReturnValue({
+        getFunctionDeclarations: vi.fn().mockReturnValue([]),
+      }),
+    } as unknown as Config;
+    checker.setConfig(mockConfig);
+    vi.clearAllMocks();
+
+    // Default mock implementations
+    vi.mocked(policyGenerator.generatePolicy).mockResolvedValue({ policy: {} });
+    vi.mocked(policyEnforcer.enforcePolicy).mockResolvedValue({
+      decision: SafetyCheckDecision.ALLOW,
+    });
+  });
+
+  it('should be a singleton', () => {
+    const instance1 = ConsecaSafetyChecker.getInstance();
+    const instance2 = ConsecaSafetyChecker.getInstance();
+    expect(instance1).toBe(instance2);
+  });
+
+  it('should return ALLOW when no user prompt is present in context', async () => {
+    const input: SafetyCheckInput = {
+      protocolVersion: '1.0.0',
+      toolCall: { name: 'testTool' },
+      context: {
+        environment: { cwd: '/tmp', workspaces: [] },
+      },
+    };
+
+    const result = await checker.check(input);
+    expect(result.decision).toBe(SafetyCheckDecision.ALLOW);
+  });
+
+  it('should return ALLOW if enableConseca is false', async () => {
+    const disabledConfig = {
+      enableConseca: false,
+    } as unknown as Config;
+    checker.setConfig(disabledConfig);
+
+    const input: SafetyCheckInput = {
+      protocolVersion: '1.0.0',
+      toolCall: { name: 'testTool' },
+      context: {
+        environment: { cwd: '/tmp', workspaces: [] },
+      },
+    };
+
+    const result = await checker.check(input);
+    expect(result.decision).toBe(SafetyCheckDecision.ALLOW);
+    expect(result.reason).toBe('Conseca is disabled');
+    expect(policyGenerator.generatePolicy).not.toHaveBeenCalled();
+  });
+
+  it('getPolicy should return cached policy if user prompt matches', async () => {
+    const mockPolicy = {
+      tool: {
+        permissions: SafetyCheckDecision.ALLOW,
+        constraints: 'None',
+        rationale: 'Test',
+      },
+    };
+    vi.mocked(policyGenerator.generatePolicy).mockResolvedValue({
+      policy: mockPolicy,
+    });
+
+    const policy1 = await checker.getPolicy('prompt', 'trusted', mockConfig);
+    const policy2 = await checker.getPolicy('prompt', 'trusted', mockConfig);
+
+    expect(policy1).toBe(mockPolicy);
+    expect(policy2).toBe(mockPolicy);
+    expect(policyGenerator.generatePolicy).toHaveBeenCalledTimes(1);
+  });
+
+  it('getPolicy should generate new policy if user prompt changes', async () => {
+    const mockPolicy1 = {
+      tool1: {
+        permissions: SafetyCheckDecision.ALLOW,
+        constraints: 'None',
+        rationale: 'Test',
+      },
+    };
+    const mockPolicy2 = {
+      tool2: {
+        permissions: SafetyCheckDecision.ALLOW,
+        constraints: 'None',
+        rationale: 'Test',
+      },
+    };
+    vi.mocked(policyGenerator.generatePolicy)
+      .mockResolvedValueOnce({ policy: mockPolicy1 })
+      .mockResolvedValueOnce({ policy: mockPolicy2 });
+
+    const policy1 = await checker.getPolicy('prompt1', 'trusted', mockConfig);
+    const policy2 = await checker.getPolicy('prompt2', 'trusted', mockConfig);
+
+    expect(policy1).toBe(mockPolicy1);
+    expect(policy2).toBe(mockPolicy2);
+    expect(policyGenerator.generatePolicy).toHaveBeenCalledTimes(2);
+  });
+
+  it('check should call getPolicy and enforcePolicy', async () => {
+    const mockPolicy = {
+      tool: {
+        permissions: SafetyCheckDecision.ALLOW,
+        constraints: 'None',
+        rationale: 'Test',
+      },
+    };
+    vi.mocked(policyGenerator.generatePolicy).mockResolvedValue({
+      policy: mockPolicy,
+    });
+    vi.mocked(policyEnforcer.enforcePolicy).mockResolvedValue({
+      decision: SafetyCheckDecision.ALLOW,
+    });
+
+    const input: SafetyCheckInput = {
+      protocolVersion: '1.0.0',
+      toolCall: { name: 'tool', args: {} },
+      context: {
+        environment: { cwd: '.', workspaces: [] },
+        history: {
+          turns: [
+            {
+              user: { text: 'user prompt' },
+              model: {},
+            },
+          ],
+        },
+      },
+    };
+
+    const result = await checker.check(input);
+
+    expect(policyGenerator.generatePolicy).toHaveBeenCalledWith(
+      'user prompt',
+      expect.any(String),
+      mockConfig,
+    );
+    expect(policyEnforcer.enforcePolicy).toHaveBeenCalledWith(
+      mockPolicy,
+      input.toolCall,
+      mockConfig,
+    );
+    expect(result.decision).toBe(SafetyCheckDecision.ALLOW);
+  });
+
+  it('check should return ALLOW if no user prompt found (fallback)', async () => {
+    const input: SafetyCheckInput = {
+      protocolVersion: '1.0.0',
+      toolCall: { name: 'tool', args: {} },
+      context: {
+        environment: { cwd: '.', workspaces: [] },
+      },
+    };
+
+    const result = await checker.check(input);
+
+    expect(policyGenerator.generatePolicy).not.toHaveBeenCalled();
+    expect(result.decision).toBe(SafetyCheckDecision.ALLOW);
+  });
+
+  // Test state helpers
+  it('should expose current state via helpers', async () => {
+    const mockPolicy = {
+      tool: {
+        permissions: SafetyCheckDecision.ALLOW,
+        constraints: 'None',
+        rationale: 'Test',
+      },
+    };
+    vi.mocked(policyGenerator.generatePolicy).mockResolvedValue({
+      policy: mockPolicy,
+    });
+
+    await checker.getPolicy('prompt', 'trusted', mockConfig);
+
+    expect(checker.getCurrentPolicy()).toBe(mockPolicy);
+    expect(checker.getActiveUserPrompt()).toBe('prompt');
+  });
+  it('should log policy generation event when config is set', async () => {
+    const mockPolicy = {
+      tool: {
+        permissions: SafetyCheckDecision.ALLOW,
+        constraints: 'None',
+        rationale: 'Test',
+      },
+    };
+    vi.mocked(policyGenerator.generatePolicy).mockResolvedValue({
+      policy: mockPolicy,
+    });
+
+    await checker.getPolicy('telemetry_prompt', 'trusted', mockConfig);
+
+    expect(logConsecaPolicyGeneration).toHaveBeenCalledWith(
+      mockConfig,
+      expect.anything(),
+    );
+  });
+
+  it('should log verdict event on check', async () => {
+    const mockPolicy = {
+      tool: {
+        permissions: SafetyCheckDecision.ALLOW,
+        constraints: 'None',
+        rationale: 'Test',
+      },
+    };
+    vi.mocked(policyGenerator.generatePolicy).mockResolvedValue({
+      policy: mockPolicy,
+    });
+    vi.mocked(policyEnforcer.enforcePolicy).mockResolvedValue({
+      decision: SafetyCheckDecision.ALLOW,
+      reason: 'Allowed by policy',
+    });
+
+    const input: SafetyCheckInput = {
+      protocolVersion: '1.0.0',
+      toolCall: { name: 'tool', args: {} },
+      context: {
+        environment: { cwd: '.', workspaces: [] },
+        history: {
+          turns: [
+            {
+              user: { text: 'user prompt' },
+              model: {},
+            },
+          ],
+        },
+      },
+    };
+
+    await checker.check(input);
+
+    expect(logConsecaVerdict).toHaveBeenCalledWith(
+      mockConfig,
+      expect.anything(),
+    );
+  });
+});

packages/core/src/safety/conseca/conseca.ts

@@ -0,0 +1,170 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import type { InProcessChecker } from '../built-in.js';
+import type { SafetyCheckInput, SafetyCheckResult } from '../protocol.js';
+import { SafetyCheckDecision } from '../protocol.js';
+
+import {
+  logConsecaPolicyGeneration,
+  ConsecaPolicyGenerationEvent,
+  logConsecaVerdict,
+  ConsecaVerdictEvent,
+} from '../../telemetry/index.js';
+import { debugLogger } from '../../utils/debugLogger.js';
+import type { Config } from '../../config/config.js';
+
+import { generatePolicy } from './policy-generator.js';
+import { enforcePolicy } from './policy-enforcer.js';
+import type { SecurityPolicy } from './types.js';
+
+export class ConsecaSafetyChecker implements InProcessChecker {
+  private static instance: ConsecaSafetyChecker | undefined;
+  private currentPolicy: SecurityPolicy | null = null;
+  private activeUserPrompt: string | null = null;
+  private config: Config | null = null;
+
+  /**
+   * Private constructor to enforce singleton pattern.
+   * Use `getInstance()` to access the instance.
+   */
+  private constructor() {}
+
+  static getInstance(): ConsecaSafetyChecker {
+    if (!ConsecaSafetyChecker.instance) {
+      ConsecaSafetyChecker.instance = new ConsecaSafetyChecker();
+    }
+    return ConsecaSafetyChecker.instance;
+  }
+
+  /**
+   * Resets the singleton instance. Use only in tests.
+   */
+  static resetInstance(): void {
+    ConsecaSafetyChecker.instance = undefined;
+  }
+
+  setConfig(config: Config): void {
+    this.config = config;
+  }
+
+  async check(input: SafetyCheckInput): Promise<SafetyCheckResult> {
+    debugLogger.debug(
+      `[Conseca] check called. History is: ${JSON.stringify(input.context.history)}`,
+    );
+
+    if (!this.config) {
+      debugLogger.debug('[Conseca] check failed: Config not initialized');
+      return {
+        decision: SafetyCheckDecision.ALLOW,
+        reason: 'Config not initialized',
+      };
+    }
+
+    if (!this.config.enableConseca) {
+      debugLogger.debug('[Conseca] check skipped: Conseca is not enabled.');
+      return {
+        decision: SafetyCheckDecision.ALLOW,
+        reason: 'Conseca is disabled',
+      };
+    }
+
+    const userPrompt = this.extractUserPrompt(input);
+    let trustedContent = '';
+
+    const toolRegistry = this.config.getToolRegistry();
+    if (toolRegistry) {
+      const tools = toolRegistry.getFunctionDeclarations();
+      trustedContent = JSON.stringify(tools, null, 2);
+    }
+
+    if (userPrompt) {
+      await this.getPolicy(userPrompt, trustedContent, this.config);
+    } else {
+      debugLogger.debug(
+        `[Conseca] Skipping policy generation because userPrompt is null`,
+      );
+    }
+
+    let result: SafetyCheckResult;
+
+    if (!this.currentPolicy) {
+      result = {
+        decision: SafetyCheckDecision.ALLOW, // Fallback if no policy generated yet
+        reason: 'No security policy generated.',
+        error: 'No security policy generated.',
+      };
+    } else {
+      result = await enforcePolicy(
+        this.currentPolicy,
+        input.toolCall,
+        this.config,
+      );
+    }
+
+    logConsecaVerdict(
+      this.config,
+      new ConsecaVerdictEvent(
+        userPrompt || '',
+        JSON.stringify(this.currentPolicy || {}),
+        JSON.stringify(input.toolCall),
+        result.decision,
+        result.reason || '',
+        'error' in result ? result.error : undefined,
+      ),
+    );
+
+    return result;
+  }
+
+  async getPolicy(
+    userPrompt: string,
+    trustedContent: string,
+    config: Config,
+  ): Promise<SecurityPolicy> {
+    if (this.activeUserPrompt === userPrompt && this.currentPolicy) {
+      return this.currentPolicy;
+    }
+
+    const { policy, error } = await generatePolicy(
+      userPrompt,
+      trustedContent,
+      config,
+    );
+    this.currentPolicy = policy;
+    this.activeUserPrompt = userPrompt;
+
+    logConsecaPolicyGeneration(
+      config,
+      new ConsecaPolicyGenerationEvent(
+        userPrompt,
+        trustedContent,
+        JSON.stringify(policy),
+        error,
+      ),
+    );
+
+    return policy;
+  }
+
+  private extractUserPrompt(input: SafetyCheckInput): string | null {
+    const prompt = input.context.history?.turns.at(-1)?.user.text;
+    if (prompt) {
+      return prompt;
+    }
+    debugLogger.debug(`[Conseca] extractUserPrompt failed.`);
+    return null;
+  }
+
+  // Helper methods for testing state
+  getCurrentPolicy(): SecurityPolicy | null {
+    return this.currentPolicy;
+  }
+
+  getActiveUserPrompt(): string | null {
+    return this.activeUserPrompt;
+  }
+}

packages/core/src/safety/conseca/integration.test.ts

@@ -0,0 +1,21 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, it, expect } from 'vitest';
+import { ConsecaSafetyChecker } from './conseca.js';
+import { InProcessCheckerType } from '../../policy/types.js';
+import { CheckerRegistry } from '../registry.js';
+
+describe('Conseca Integration', () => {
+  it('should be registered and resolvable via CheckerRegistry', () => {
+    const registry = new CheckerRegistry('.');
+    const checker = registry.resolveInProcess(InProcessCheckerType.CONSECA);
+
+    expect(checker).toBeDefined();
+    expect(checker).toBeInstanceOf(ConsecaSafetyChecker);
+    expect(checker).toBe(ConsecaSafetyChecker.getInstance());
+  });
+});

packages/core/src/safety/conseca/policy-enforcer.test.ts

@@ -0,0 +1,167 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { enforcePolicy } from './policy-enforcer.js';
+import type { Config } from '../../config/config.js';
+import type { ContentGenerator } from '../../core/contentGenerator.js';
+import { SafetyCheckDecision } from '../protocol.js';
+import type { FunctionCall } from '@google/genai';
+import { LlmRole } from '../../telemetry/index.js';
+
+describe('policy_enforcer', () => {
+  let mockConfig: Config;
+  let mockContentGenerator: ContentGenerator;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    mockContentGenerator = {
+      generateContent: vi.fn(),
+    } as unknown as ContentGenerator;
+
+    mockConfig = {
+      getContentGenerator: vi.fn().mockReturnValue(mockContentGenerator),
+    } as unknown as Config;
+  });
+
+  it('should return ALLOW when content generator returns ALLOW', async () => {
+    mockContentGenerator.generateContent = vi.fn().mockResolvedValue({
+      candidates: [
+        {
+          content: {
+            parts: [
+              { text: JSON.stringify({ decision: 'allow', reason: 'Safe' }) },
+            ],
+          },
+        },
+      ],
+    });
+
+    const toolCall: FunctionCall = { name: 'testTool', args: {} };
+    const policy = {
+      testTool: {
+        permissions: SafetyCheckDecision.ALLOW,
+        constraints: 'None',
+        rationale: 'Test',
+      },
+    };
+    const result = await enforcePolicy(policy, toolCall, mockConfig);
+
+    expect(mockConfig.getContentGenerator).toHaveBeenCalled();
+    expect(mockContentGenerator.generateContent).toHaveBeenCalledWith(
+      expect.objectContaining({
+        model: expect.any(String),
+        config: expect.objectContaining({
+          responseMimeType: 'application/json',
+          responseSchema: expect.any(Object),
+        }),
+        contents: expect.arrayContaining([
+          expect.objectContaining({
+            role: 'user',
+            parts: expect.arrayContaining([
+              expect.objectContaining({
+                text: expect.stringContaining('Security Policy:'),
+              }),
+            ]),
+          }),
+        ]),
+      }),
+      'conseca-policy-enforcement',
+      LlmRole.SUBAGENT,
+    );
+    expect(result.decision).toBe(SafetyCheckDecision.ALLOW);
+  });
+
+  it('should handle missing content generator gracefully (error case)', async () => {
+    vi.mocked(mockConfig.getContentGenerator).mockReturnValue(
+      undefined as unknown as ContentGenerator,
+    );
+
+    const toolCall: FunctionCall = { name: 'testTool', args: {} };
+    const policy = {
+      testTool: {
+        permissions: SafetyCheckDecision.ALLOW,
+        constraints: 'None',
+        rationale: 'Test',
+      },
+    };
+    const result = await enforcePolicy(policy, toolCall, mockConfig);
+
+    expect(result.decision).toBe(SafetyCheckDecision.ALLOW);
+  });
+
+  it('should ALLOW if tool name is missing with the reason and error as tool name is missing', async () => {
+    const toolCall = { args: {} } as FunctionCall;
+    const policy = {};
+    const result = await enforcePolicy(policy, toolCall, mockConfig);
+
+    expect(result.decision).toBe(SafetyCheckDecision.ALLOW);
+    expect(result.reason).toBe('Tool name is missing');
+    if (result.decision === SafetyCheckDecision.ALLOW) {
+      expect(result.error).toBe('Tool name is missing');
+    }
+  });
+
+  it('should handle empty policy by checking with LLM (fail-open/check behavior)', async () => {
+    // Even if policy is empty for the tool, we currently send it to LLM.
+    // The LLM might ALLOW or DENY based on its own judgment of "no policy".
+    // We simulate the LLM allowing the action to match the current fail-open strategy.
+    mockContentGenerator.generateContent = vi.fn().mockResolvedValue({
+      candidates: [
+        {
+          content: {
+            parts: [
+              {
+                text: JSON.stringify({
+                  decision: 'allow',
+                  reason: 'No restrictions',
+                }),
+              },
+            ],
+          },
+        },
+      ],
+    });
+
+    const toolCall: FunctionCall = { name: 'unknownTool', args: {} };
+    const policy = {}; // Empty policy
+    const result = await enforcePolicy(policy, toolCall, mockConfig);
+
+    expect(result.decision).toBe(SafetyCheckDecision.ALLOW);
+    expect(mockContentGenerator.generateContent).toHaveBeenCalled();
+    if (result.decision === SafetyCheckDecision.ALLOW) {
+      expect(result.error).toBeUndefined();
+    }
+  });
+
+  it('should handle malformed JSON response from LLM by failing open (ALLOW)', async () => {
+    mockContentGenerator.generateContent = vi.fn().mockResolvedValue({
+      candidates: [
+        {
+          content: {
+            parts: [{ text: 'This is not JSON' }],
+          },
+        },
+      ],
+    });
+
+    const toolCall: FunctionCall = { name: 'testTool', args: {} };
+    const policy = {
+      testTool: {
+        permissions: SafetyCheckDecision.ALLOW,
+        constraints: 'None',
+        rationale: 'Test',
+      },
+    };
+    const result = await enforcePolicy(policy, toolCall, mockConfig);
+
+    expect(result.decision).toBe(SafetyCheckDecision.ALLOW);
+    expect(result.reason).toContain('JSON Parse Error');
+    if (result.decision === SafetyCheckDecision.ALLOW) {
+      expect(result.error).toContain('JSON Parse Error');
+    }
+  });
+});

packages/core/src/safety/conseca/policy-enforcer.ts

@@ -0,0 +1,164 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import type { Config } from '../../config/config.js';
+import type { FunctionCall } from '@google/genai';
+import { SafetyCheckDecision, type SafetyCheckResult } from '../protocol.js';
+import type { SecurityPolicy } from './types.js';
+import { getResponseText } from '../../utils/partUtils.js';
+import { safeTemplateReplace } from '../../utils/textUtils.js';
+
+import { DEFAULT_GEMINI_FLASH_MODEL } from '../../config/models.js';
+import { debugLogger } from '../../utils/debugLogger.js';
+
+import { LlmRole } from '../../telemetry/index.js';
+
+const CONSECA_ENFORCEMENT_PROMPT = `
+You are a security enforcement engine. Your goal is to check if a specific tool call complies with a given security policy.
+
+Input:
+1.  **Security Policy:** A set of rules defining allowed and denied actions for this specific tool.
+2.  **Tool Call:** The actual function call the system intends to execute.
+
+Security Policy:
+{{policy}}
+
+Tool Call:
+{{tool_call}}
+
+Evaluate the tool call against the policy.
+1. Check if the tool is allowed.
+2. Check if the arguments match the constraints.
+3. Output a JSON object with:
+   - "decision": "allow", "deny", or "ask_user".
+   - "reason": A brief explanation.
+
+Output strictly JSON.
+`;
+
+import { z } from 'zod';
+import { zodToJsonSchema } from 'zod-to-json-schema';
+
+const EnforcementResultSchema = z.object({
+  decision: z.enum(['allow', 'deny', 'ask_user']),
+  reason: z.string(),
+});
+
+/**
+ * Enforces the security policy for a given tool call.
+ */
+export async function enforcePolicy(
+  policy: SecurityPolicy,
+  toolCall: FunctionCall,
+  config: Config,
+): Promise<SafetyCheckResult> {
+  const model = DEFAULT_GEMINI_FLASH_MODEL;
+  const contentGenerator = config.getContentGenerator();
+
+  if (!contentGenerator) {
+    return {
+      decision: SafetyCheckDecision.ALLOW,
+      reason: 'Content generator not initialized',
+      error: 'Content generator not initialized',
+    };
+  }
+
+  const toolName = toolCall.name;
+  // If tool name is missing, we cannot enforce the policy. Allow by default.
+  if (!toolName) {
+    return {
+      decision: SafetyCheckDecision.ALLOW,
+      reason: 'Tool name is missing',
+      error: 'Tool name is missing',
+    };
+  }
+
+  const toolPolicyStr = JSON.stringify(policy[toolName] || {}, null, 2);
+  const toolCallStr = JSON.stringify(toolCall, null, 2);
+  debugLogger.debug(
+    `[Conseca] Enforcing policy for tool: ${toolName}`,
+    toolCall,
+    toolPolicyStr,
+    toolCallStr,
+  );
+
+  try {
+    const result = await contentGenerator.generateContent(
+      {
+        model,
+        config: {
+          responseMimeType: 'application/json',
+          responseSchema: zodToJsonSchema(EnforcementResultSchema, {
+            target: 'openApi3',
+          }),
+        },
+        contents: [
+          {
+            role: 'user',
+            parts: [
+              {
+                text: safeTemplateReplace(CONSECA_ENFORCEMENT_PROMPT, {
+                  policy: toolPolicyStr,
+                  tool_call: toolCallStr,
+                }),
+              },
+            ],
+          },
+        ],
+      },
+      'conseca-policy-enforcement',
+      LlmRole.SUBAGENT,
+    );
+
+    const responseText = getResponseText(result);
+    debugLogger.debug(`[Conseca] Enforcement Raw Response: ${responseText}`);
+
+    if (!responseText) {
+      return {
+        decision: SafetyCheckDecision.ALLOW,
+        reason: 'Empty response from policy enforcer',
+        error: 'Empty response from policy enforcer',
+      };
+    }
+
+    try {
+      const parsed = EnforcementResultSchema.parse(JSON.parse(responseText));
+      debugLogger.debug(`[Conseca] Enforcement Parsed:`, parsed);
+
+      let decision: SafetyCheckDecision;
+      switch (parsed.decision) {
+        case 'allow':
+          decision = SafetyCheckDecision.ALLOW;
+          break;
+        case 'ask_user':
+          decision = SafetyCheckDecision.ASK_USER;
+          break;
+        case 'deny':
+        default:
+          decision = SafetyCheckDecision.DENY;
+          break;
+      }
+
+      return {
+        decision,
+        reason: parsed.reason,
+      };
+    } catch (parseError) {
+      return {
+        decision: SafetyCheckDecision.ALLOW,
+        reason: 'JSON Parse Error in enforcement response',
+        error: `JSON Parse Error: ${parseError instanceof Error ? parseError.message : String(parseError)}. Raw: ${responseText}`,
+      };
+    }
+  } catch (error) {
+    debugLogger.error('Policy enforcement failed:', error);
+    return {
+      decision: SafetyCheckDecision.ALLOW,
+      reason: 'Policy enforcement failed',
+      error: `Policy enforcement failed: ${error instanceof Error ? error.message : String(error)}`,
+    };
+  }
+}

packages/core/src/safety/conseca/policy-generator.test.ts

@@ -0,0 +1,116 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { generatePolicy } from './policy-generator.js';
+import { SafetyCheckDecision } from '../protocol.js';
+import type { Config } from '../../config/config.js';
+import type { ContentGenerator } from '../../core/contentGenerator.js';
+import { LlmRole } from '../../telemetry/index.js';
+
+describe('policy_generator', () => {
+  let mockConfig: Config;
+  let mockContentGenerator: ContentGenerator;
+
+  beforeEach(() => {
+    mockContentGenerator = {
+      generateContent: vi.fn(),
+    } as unknown as ContentGenerator;
+
+    mockConfig = {
+      getContentGenerator: vi.fn().mockReturnValue(mockContentGenerator),
+    } as unknown as Config;
+  });
+
+  it('should return a policy object when content generator is available', async () => {
+    const mockPolicy = {
+      read_file: {
+        permissions: SafetyCheckDecision.ALLOW,
+        constraints: 'None',
+        rationale: 'Test',
+      },
+    };
+    mockContentGenerator.generateContent = vi.fn().mockResolvedValue({
+      candidates: [
+        {
+          content: {
+            parts: [
+              {
+                text: JSON.stringify({
+                  policies: [
+                    {
+                      tool_name: 'read_file',
+                      policy: mockPolicy.read_file,
+                    },
+                  ],
+                }),
+              },
+            ],
+          },
+        },
+      ],
+    });
+
+    const result = await generatePolicy(
+      'test prompt',
+      'trusted content',
+      mockConfig,
+    );
+
+    expect(mockConfig.getContentGenerator).toHaveBeenCalled();
+    expect(mockContentGenerator.generateContent).toHaveBeenCalledWith(
+      expect.objectContaining({
+        model: expect.any(String),
+        config: expect.objectContaining({
+          responseMimeType: 'application/json',
+          responseSchema: expect.any(Object),
+        }),
+        contents: expect.any(Array),
+      }),
+      'conseca-policy-generation',
+      LlmRole.SUBAGENT,
+    );
+    expect(result.policy).toEqual(mockPolicy);
+    expect(result.error).toBeUndefined();
+  });
+
+  it('should handle missing content generator gracefully', async () => {
+    vi.mocked(mockConfig.getContentGenerator).mockReturnValue(
+      undefined as unknown as ContentGenerator,
+    );
+
+    const result = await generatePolicy(
+      'test prompt',
+      'trusted content',
+      mockConfig,
+    );
+
+    expect(result.policy).toEqual({});
+    expect(result.error).toBe('Content generator not initialized');
+  });
+  it('should prevent template injection (double interpolation)', async () => {
+    mockContentGenerator.generateContent = vi.fn().mockResolvedValue({});
+
+    const userPrompt = '{{trusted_content}}';
+    const trustedContent = 'SECRET_DATA';
+
+    await generatePolicy(userPrompt, trustedContent, mockConfig);
+
+    const generateContentCall = vi.mocked(mockContentGenerator.generateContent)
+      .mock.calls[0];
+    const request = generateContentCall[0] as {
+      contents: Array<{ parts: Array<{ text: string }> }>;
+    };
+    const promptText = request.contents[0].parts[0].text;
+
+    // The user prompt should contain the literal placeholder, NOT the secret data
+    expect(promptText).toContain('User Prompt: "{{trusted_content}}"');
+    expect(promptText).not.toContain('User Prompt: "SECRET_DATA"');
+
+    // The trusted tools section SHOULD contain the secret data
+    expect(promptText).toContain('Trusted Tools (Context):\nSECRET_DATA');
+  });
+});

packages/core/src/safety/conseca/policy-generator.ts

@@ -0,0 +1,178 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import type { Config } from '../../config/config.js';
+import type { SecurityPolicy } from './types.js';
+import { getResponseText } from '../../utils/partUtils.js';
+import { safeTemplateReplace } from '../../utils/textUtils.js';
+import { DEFAULT_GEMINI_FLASH_MODEL } from '../../config/models.js';
+import { debugLogger } from '../../utils/debugLogger.js';
+import { SafetyCheckDecision } from '../protocol.js';
+
+import { LlmRole } from '../../telemetry/index.js';
+
+const CONSECA_POLICY_GENERATION_PROMPT = `
+You are a security expert responsible for generating fine-grained security policies for a large language model integrated into a command-line tool. Your role is to act as a "policy generator" that creates temporary, context-specific rules based on a user's prompt and the tools available to the main LLM.
+
+Your primary goal is to enforce the principle of least privilege. The policies you create should be as restrictive as possible while still allowing the main LLM to complete the user's requested task.
+
+For each tool that is relevant to the user's prompt, you must generate a policy object.
+
+### Output Format
+You must return a JSON object with a "policies" key, which is an array of objects. Each object must have:
+- "tool_name": The name of the tool.
+- "policy": An object with:
+  - "permissions": "allow" | "deny" | "ask_user"
+  - "constraints": A detailed description of conditions (e.g. allowed files, arguments).
+  - "rationale": Explanation for the policy.
+
+Example JSON:
+\`\`\`json
+{
+  "policies": [
+    {
+      "tool_name": "read_file",
+      "policy": {
+        "permissions": "allow",
+        "constraints": "Only allow reading 'main.py'.",
+        "rationale": "User asked to read main.py"
+      }
+    },
+    {
+      "tool_name": "run_shell_command",
+      "policy": {
+        "permissions": "deny",
+        "constraints": "None",
+        "rationale": "Shell commands are not needed for this task"
+      }
+    }
+  ]
+}
+\`\`\`
+
+### Guiding Principles:
+1.  **Permissions:**
+    *   **allow:** Required tools for the task.
+    *   **deny:** Tools clearly outside the scope.
+    *   **ask_user:** Destructive actions or ambiguity.
+
+2.  **Constraints:**
+    *   Be specific! Restrict file paths, command arguments, etc.
+
+3.  **Rationale:**
+    *   Reference the user's prompt.
+
+User Prompt: "{{user_prompt}}"
+
+Trusted Tools (Context):
+{{trusted_content}}
+`;
+
+import { z } from 'zod';
+import { zodToJsonSchema } from 'zod-to-json-schema';
+
+const ToolPolicySchema = z.object({
+  permissions: z.nativeEnum(SafetyCheckDecision),
+  constraints: z.string(),
+  rationale: z.string(),
+});
+
+const SecurityPolicyResponseSchema = z.object({
+  policies: z.array(
+    z.object({
+      tool_name: z.string(),
+      policy: ToolPolicySchema,
+    }),
+  ),
+});
+
+export interface PolicyGenerationResult {
+  policy: SecurityPolicy;
+  error?: string;
+}
+
+/**
+ * Generates a security policy for the given user prompt and trusted content.
+ */
+export async function generatePolicy(
+  userPrompt: string,
+  trustedContent: string,
+  config: Config,
+): Promise<PolicyGenerationResult> {
+  const model = DEFAULT_GEMINI_FLASH_MODEL;
+  const contentGenerator = config.getContentGenerator();
+
+  if (!contentGenerator) {
+    return { policy: {}, error: 'Content generator not initialized' };
+  }
+
+  try {
+    const result = await contentGenerator.generateContent(
+      {
+        model,
+        config: {
+          responseMimeType: 'application/json',
+          responseSchema: zodToJsonSchema(SecurityPolicyResponseSchema, {
+            target: 'openApi3',
+          }),
+        },
+        contents: [
+          {
+            role: 'user',
+            parts: [
+              {
+                text: safeTemplateReplace(CONSECA_POLICY_GENERATION_PROMPT, {
+                  user_prompt: userPrompt,
+                  trusted_content: trustedContent,
+                }),
+              },
+            ],
+          },
+        ],
+      },
+      'conseca-policy-generation',
+      LlmRole.SUBAGENT,
+    );
+
+    const responseText = getResponseText(result);
+    debugLogger.debug(
+      `[Conseca] Policy Generation Raw Response: ${responseText}`,
+    );
+
+    if (!responseText) {
+      return { policy: {}, error: 'Empty response from policy generator' };
+    }
+
+    try {
+      const parsed = SecurityPolicyResponseSchema.parse(
+        JSON.parse(responseText),
+      );
+      const policiesList = parsed.policies;
+      const policy: SecurityPolicy = {};
+      for (const item of policiesList) {
+        policy[item.tool_name] = item.policy;
+      }
+
+      debugLogger.debug(`[Conseca] Policy Generation Parsed:`, policy);
+      return { policy };
+    } catch (parseError) {
+      debugLogger.debug(
+        `[Conseca] Policy Generation JSON Parse Error:`,
+        parseError,
+      );
+      return {
+        policy: {},
+        error: `JSON Parse Error: ${parseError instanceof Error ? parseError.message : String(parseError)}. Raw: ${responseText}`,
+      };
+    }
+  } catch (error) {
+    debugLogger.error('Policy generation failed:', error);
+    return {
+      policy: {},
+      error: `Policy generation failed: ${error instanceof Error ? error.message : String(error)}`,
+    };
+  }
+}

packages/core/src/safety/conseca/types.ts

@@ -0,0 +1,18 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import type { SafetyCheckDecision } from '../protocol.js';
+
+export interface ToolPolicy {
+  permissions: SafetyCheckDecision;
+  constraints: string;
+  rationale: string;
+}
+
+/**
+ * A map of tool names to their specific security policies.
+ */
+export type SecurityPolicy = Record<string, ToolPolicy>;

packages/core/src/safety/context-builder.test.ts

@@ -7,50 +7,139 @@
 import { describe, it, expect, vi, beforeEach } from 'vitest';
 import { ContextBuilder } from './context-builder.js';
 import type { Config } from '../config/config.js';
-import type { ConversationTurn } from './protocol.js';
+import type { Content, FunctionCall } from '@google/genai';
 
 describe('ContextBuilder', () => {
   let contextBuilder: ContextBuilder;
-  let mockConfig: Config;
-  const mockHistory: ConversationTurn[] = [
-    { user: { text: 'hello' }, model: { text: 'hi' } },
-  ];
+  let mockConfig: Partial<Config>;
+  let mockHistory: Content[];
   const mockCwd = '/home/user/project';
   const mockWorkspaces = ['/home/user/project'];
 
   beforeEach(() => {
     vi.spyOn(process, 'cwd').mockReturnValue(mockCwd);
+    mockHistory = [];
+
     mockConfig = {
       getWorkspaceContext: vi.fn().mockReturnValue({
         getDirectories: vi.fn().mockReturnValue(mockWorkspaces),
       }),
-      apiKey: 'secret-api-key',
-      somePublicConfig: 'public-value',
-      nested: {
-        secretToken: 'hidden',
-        public: 'visible',
-      },
-    } as unknown as Config;
-    contextBuilder = new ContextBuilder(mockConfig, mockHistory);
+      getQuestion: vi.fn().mockReturnValue('mock question'),
+      getGeminiClient: vi.fn().mockReturnValue({
+        getHistory: vi.fn().mockImplementation(() => mockHistory),
+      }),
+    };
+    contextBuilder = new ContextBuilder(mockConfig as unknown as Config);
   });
 
-  it('should build full context with all fields', () => {
+  it('should build full context with empty history', () => {
+    mockHistory = [];
+    // Should inject current question
     const context = contextBuilder.buildFullContext();
-    expect(context.environment.cwd).toBe(mockCwd);
-    expect(context.environment.workspaces).toEqual(mockWorkspaces);
-    expect(context.history?.turns).toEqual(mockHistory);
+    expect(context.history?.turns).toEqual([
+      {
+        user: { text: 'mock question' },
+        model: {},
+      },
+    ]);
   });
 
-  it('should build minimal context with only required keys', () => {
+  it('should build full context with existing history (User -> Model)', () => {
+    mockHistory = [
+      { role: 'user', parts: [{ text: 'Hello' }] },
+      { role: 'model', parts: [{ text: 'Hi there' }] },
+    ];
+    // Should NOT inject current question if history exists
+    const context = contextBuilder.buildFullContext();
+    expect(context.history?.turns).toHaveLength(1);
+    expect(context.history?.turns[0]).toEqual({
+      user: { text: 'Hello' },
+      model: { text: 'Hi there', toolCalls: [] },
+    });
+  });
+
+  it('should handle history with tool calls', () => {
+    const mockToolCall: FunctionCall = {
+      id: 'call_1',
+      name: 'list_files',
+      args: { path: '.' },
+    };
+    mockHistory = [
+      { role: 'user', parts: [{ text: 'List files' }] },
+      {
+        role: 'model',
+        parts: [
+          { text: 'Sure, listing files.' },
+          { functionCall: mockToolCall },
+        ],
+      },
+    ];
+
+    const context = contextBuilder.buildFullContext();
+    expect(context.history?.turns).toHaveLength(1);
+    expect(context.history?.turns[0].model.toolCalls).toEqual([mockToolCall]);
+    expect(context.history?.turns[0].model.text).toBe('Sure, listing files.');
+  });
+
+  it('should handle orphan model response (Model starts conversation)', () => {
+    mockHistory = [
+      { role: 'model', parts: [{ text: 'Welcome!' }] },
+      { role: 'user', parts: [{ text: 'Thanks' }] },
+    ];
+
+    const context = contextBuilder.buildFullContext();
+    // 1. Orphan model response -> Turn 1: User="" Model="Welcome!"
+    // 2. User "Thanks" -> Turn 2: User="Thanks" Model={} (pending)
+    expect(context.history?.turns).toHaveLength(2);
+    expect(context.history?.turns[0]).toEqual({
+      user: { text: '' },
+      model: { text: 'Welcome!', toolCalls: [] },
+    });
+    expect(context.history?.turns[1]).toEqual({
+      user: { text: 'Thanks' },
+      model: {},
+    });
+  });
+
+  it('should handle multiple user turns in a row', () => {
+    mockHistory = [
+      { role: 'user', parts: [{ text: 'Q1' }] },
+      { role: 'user', parts: [{ text: 'Q2' }] },
+      { role: 'model', parts: [{ text: 'A2' }] },
+    ];
+
+    const context = contextBuilder.buildFullContext();
+    // 1. "Q1" -> Turn 1: User="Q1" Model={}
+    // 2. "Q2" -> Turn 2: User="Q2" Model="A2"
+    expect(context.history?.turns).toHaveLength(2);
+    expect(context.history?.turns[0]).toEqual({
+      user: { text: 'Q1' },
+      model: {},
+    });
+    expect(context.history?.turns[1]).toEqual({
+      user: { text: 'Q2' },
+      model: { text: 'A2', toolCalls: [] },
+    });
+  });
+
+  it('should build minimal context', () => {
+    mockHistory = [{ role: 'user', parts: [{ text: 'test' }] }];
     const context = contextBuilder.buildMinimalContext(['environment']);
+
     expect(context).toHaveProperty('environment');
-    expect(context).not.toHaveProperty('config');
     expect(context).not.toHaveProperty('history');
   });
 
-  it('should handle missing history', () => {
-    contextBuilder = new ContextBuilder(mockConfig);
+  it('should handle undefined parts gracefully', () => {
+    mockHistory = [
+      { role: 'user', parts: undefined as unknown as [] },
+      { role: 'model', parts: undefined as unknown as [] },
+    ];
     const context = contextBuilder.buildFullContext();
-    expect(context.history?.turns).toEqual([]);
+    expect(context.history?.turns).toHaveLength(1);
+    expect(context.history?.turns[0]).toEqual({
+      user: { text: '' },
+      model: { text: '', toolCalls: [] },
+    });
   });
 });

packages/core/src/safety/context-builder.ts

@@ -6,20 +6,39 @@
 
 import type { SafetyCheckInput, ConversationTurn } from './protocol.js';
 import type { Config } from '../config/config.js';
+import { debugLogger } from '../utils/debugLogger.js';
+import type { Content, FunctionCall } from '@google/genai';
 
 /**
  * Builds context objects for safety checkers, ensuring sensitive data is filtered.
  */
 export class ContextBuilder {
-  constructor(
-    private readonly config: Config,
-    private readonly conversationHistory: ConversationTurn[] = [],
-  ) {}
+  constructor(private readonly config: Config) {}
 
   /**
    * Builds the full context object with all available data.
    */
   buildFullContext(): SafetyCheckInput['context'] {
+    const clientHistory = this.config.getGeminiClient()?.getHistory() || [];
+    const history = this.convertHistoryToTurns(clientHistory);
+
+    debugLogger.debug(
+      `[ContextBuilder] buildFullContext called. Converted history length: ${history.length}`,
+    );
+
+    // ContextBuilder's responsibility is to provide the *current* context.
+    // If the conversation hasn't started (history is empty), we check if there's a pending question.
+    // However, if the history is NOT empty, we trust it reflects the true state.
+    const currentQuestion = this.config.getQuestion();
+    if (currentQuestion && history.length === 0) {
+      history.push({
+        user: {
+          text: currentQuestion,
+        },
+        model: {},
+      });
+    }
+
     return {
       environment: {
         cwd: process.cwd(),
@@ -29,7 +48,7 @@ export class ContextBuilder {
           .getDirectories() as string[],
       },
       history: {
-        turns: this.conversationHistory,
+        turns: history,
       },
     };
   }
@@ -53,4 +72,51 @@ export class ContextBuilder {
     // eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion
     return minimalContext as SafetyCheckInput['context'];
   }
+
+  // Helper to convert Google GenAI Content[] to Safety Protocol ConversationTurn[]
+  private convertHistoryToTurns(history: Content[]): ConversationTurn[] {
+    const turns: ConversationTurn[] = [];
+    let currentUserRequest: { text: string } | undefined;
+
+    for (const content of history) {
+      if (content.role === 'user') {
+        if (currentUserRequest) {
+          // Previous user turn didn't have a matching model response (or it was filtered out)
+          // Push it as a turn with empty model response
+          turns.push({ user: currentUserRequest, model: {} });
+        }
+        currentUserRequest = {
+          text: content.parts?.map((p) => p.text).join('') || '',
+        };
+      } else if (content.role === 'model') {
+        const modelResponse = {
+          text:
+            content.parts
+              ?.filter((p) => p.text)
+              .map((p) => p.text)
+              .join('') || '',
+          toolCalls:
+            content.parts
+              ?.filter((p) => 'functionCall' in p)
+              // eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion
+              .map((p) => p.functionCall as FunctionCall) || [],
+        };
+
+        if (currentUserRequest) {
+          turns.push({ user: currentUserRequest, model: modelResponse });
+          currentUserRequest = undefined;
+        } else {
+          // Model response without preceding user request.
+          // This creates a turn with empty user text.
+          turns.push({ user: { text: '' }, model: modelResponse });
+        }
+      }
+    }
+
+    if (currentUserRequest) {
+      turns.push({ user: currentUserRequest, model: {} });
+    }
+
+    return turns;
+  }
 }

packages/core/src/safety/protocol.ts

@@ -89,6 +89,10 @@ export type SafetyCheckResult =
        * This will be shown to the user.
        */
       reason?: string;
+      /**
+       * Optional error message if the decision was made due to a system failure (fail-open).
+       */
+      error?: string;
     }
   | {
       decision: SafetyCheckDecision.DENY;

packages/core/src/safety/registry.test.ts

@@ -8,6 +8,7 @@ import { describe, it, expect, beforeEach } from 'vitest';
 import { CheckerRegistry } from './registry.js';
 import { InProcessCheckerType } from '../policy/types.js';
 import { AllowedPathChecker } from './built-in.js';
+import { ConsecaSafetyChecker } from './conseca/conseca.js';
 
 describe('CheckerRegistry', () => {
   let registry: CheckerRegistry;
@@ -18,10 +19,15 @@ describe('CheckerRegistry', () => {
   });
 
   it('should resolve built-in in-process checkers', () => {
-    const checker = registry.resolveInProcess(
+    const allowedPathChecker = registry.resolveInProcess(
       InProcessCheckerType.ALLOWED_PATH,
     );
-    expect(checker).toBeInstanceOf(AllowedPathChecker);
+    expect(allowedPathChecker).toBeInstanceOf(AllowedPathChecker);
+
+    const consecaChecker = registry.resolveInProcess(
+      InProcessCheckerType.CONSECA,
+    );
+    expect(consecaChecker).toBeInstanceOf(ConsecaSafetyChecker);
   });
 
   it('should throw for unknown in-process checkers', () => {

packages/core/src/safety/registry.ts

@@ -9,6 +9,8 @@ import * as fs from 'node:fs';
 import { type InProcessChecker, AllowedPathChecker } from './built-in.js';
 import { InProcessCheckerType } from '../policy/types.js';
 
+import { ConsecaSafetyChecker } from './conseca/conseca.js';
+
 /**
  * Registry for managing safety checker resolution.
  */
@@ -17,10 +19,22 @@ export class CheckerRegistry {
     // No external built-ins for now
   ]);
 
-  private static readonly BUILT_IN_IN_PROCESS_CHECKERS = new Map<
-    string,
-    InProcessChecker
-  >([[InProcessCheckerType.ALLOWED_PATH, new AllowedPathChecker()]]);
+  private static BUILT_IN_IN_PROCESS_CHECKERS:
+    | Map<string, InProcessChecker>
+    | undefined;
+
+  private static getBuiltInInProcessCheckers(): Map<string, InProcessChecker> {
+    if (!CheckerRegistry.BUILT_IN_IN_PROCESS_CHECKERS) {
+      CheckerRegistry.BUILT_IN_IN_PROCESS_CHECKERS = new Map<
+        string,
+        InProcessChecker
+      >([
+        [InProcessCheckerType.ALLOWED_PATH, new AllowedPathChecker()],
+        [InProcessCheckerType.CONSECA, ConsecaSafetyChecker.getInstance()],
+      ]);
+    }
+    return CheckerRegistry.BUILT_IN_IN_PROCESS_CHECKERS;
+  }
 
   // Regex to validate checker names (alphanumeric and hyphens only)
   private static readonly VALID_NAME_PATTERN = /^[a-z0-9-]+$/;
@@ -58,14 +72,14 @@ export class CheckerRegistry {
       throw new Error(`Invalid checker name "${name}".`);
     }
 
-    const checker = CheckerRegistry.BUILT_IN_IN_PROCESS_CHECKERS.get(name);
+    const checker = CheckerRegistry.getBuiltInInProcessCheckers().get(name);
     if (checker) {
       return checker;
     }
 
     throw new Error(
       `Unknown in-process checker "${name}". Available: ${Array.from(
-        CheckerRegistry.BUILT_IN_IN_PROCESS_CHECKERS.keys(),
+        CheckerRegistry.getBuiltInInProcessCheckers().keys(),
       ).join(', ')}`,
     );
   }
@@ -77,7 +91,7 @@ export class CheckerRegistry {
   static getBuiltInCheckers(): string[] {
     return [
       ...Array.from(this.BUILT_IN_EXTERNAL_CHECKERS.keys()),
-      ...Array.from(this.BUILT_IN_IN_PROCESS_CHECKERS.keys()),
+      ...Array.from(this.getBuiltInInProcessCheckers().keys()),
     ];
   }
 }

packages/core/src/scheduler/scheduler.test.ts

@@ -201,6 +201,12 @@ describe('Scheduler (Orchestrator)', () => {
         mockQueue.length = 0;
       }),
       clearBatch: vi.fn(),
+      replaceActiveCallWithTailCall: vi.fn((id: string, nextCall: ToolCall) => {
+        if (mockActiveCallsMap.has(id)) {
+          mockActiveCallsMap.delete(id);
+          mockQueue.unshift(nextCall);
+        }
+      }),
     } as unknown as Mocked<SchedulerStateManager>;
 
     // Define getters for accessors idiomatically
@@ -1006,6 +1012,113 @@ describe('Scheduler (Orchestrator)', () => {
       const result = await (scheduler as any)._processNextItem(signal);
       expect(result).toBe(false);
     });
+
+    describe('Tail Calls', () => {
+      it('should replace the active call with a new tool call and re-run the loop when tail call is requested', async () => {
+        // Setup: Tool A will return a success with a tail call request to Tool B
+        const mockResponse = {
+          callId: 'call-1',
+          responseParts: [],
+        } as unknown as ToolCallResponseInfo;
+
+        mockExecutor.execute
+          .mockResolvedValueOnce({
+            status: 'success',
+            response: mockResponse,
+            tailToolCallRequest: {
+              name: 'tool-b',
+              args: { key: 'value' },
+            },
+            request: req1,
+          } as unknown as SuccessfulToolCall)
+          .mockResolvedValueOnce({
+            status: 'success',
+            response: mockResponse,
+            request: {
+              ...req1,
+              name: 'tool-b',
+              args: { key: 'value' },
+              originalRequestName: 'test-tool',
+            },
+          } as unknown as SuccessfulToolCall);
+
+        const mockToolB = {
+          name: 'tool-b',
+          build: vi.fn().mockReturnValue({}),
+        } as unknown as AnyDeclarativeTool;
+
+        vi.mocked(mockToolRegistry.getTool).mockReturnValue(mockToolB);
+
+        await scheduler.schedule(req1, signal);
+
+        // Assert: The state manager is instructed to replace the call
+        expect(
+          mockStateManager.replaceActiveCallWithTailCall,
+        ).toHaveBeenCalledWith(
+          'call-1',
+          expect.objectContaining({
+            request: expect.objectContaining({
+              callId: 'call-1',
+              name: 'tool-b',
+              args: { key: 'value' },
+              originalRequestName: 'test-tool', // Preserves original name
+            }),
+            tool: mockToolB,
+          }),
+        );
+
+        // Assert: The executor should be called twice (once for Tool A, once for Tool B)
+        expect(mockExecutor.execute).toHaveBeenCalledTimes(2);
+      });
+
+      it('should inject an errored tool call if the tail tool is not found', async () => {
+        const mockResponse = {
+          callId: 'call-1',
+          responseParts: [],
+        } as unknown as ToolCallResponseInfo;
+
+        mockExecutor.execute.mockResolvedValue({
+          status: 'success',
+          response: mockResponse,
+          tailToolCallRequest: {
+            name: 'missing-tool',
+            args: {},
+          },
+          request: req1,
+        } as unknown as SuccessfulToolCall);
+
+        // Tool registry returns undefined for missing-tool, but valid tool for test-tool
+        vi.mocked(mockToolRegistry.getTool).mockImplementation((name) => {
+          if (name === 'test-tool') {
+            return {
+              name: 'test-tool',
+              build: vi.fn().mockReturnValue({}),
+            } as unknown as AnyDeclarativeTool;
+          }
+          return undefined;
+        });
+
+        await scheduler.schedule(req1, signal);
+
+        // Assert: Replaces active call with an errored call
+        expect(
+          mockStateManager.replaceActiveCallWithTailCall,
+        ).toHaveBeenCalledWith(
+          'call-1',
+          expect.objectContaining({
+            status: 'error',
+            request: expect.objectContaining({
+              callId: 'call-1',
+              name: 'missing-tool', // Name of the failed tail call
+              originalRequestName: 'test-tool',
+            }),
+            response: expect.objectContaining({
+              errorType: ToolErrorType.TOOL_NOT_REGISTERED,
+            }),
+          }),
+        );
+      });
+    });
   });
 
   describe('Tool Call Context Propagation', () => {

packages/core/src/scheduler/scheduler.ts

@@ -19,6 +19,7 @@ import {
   type ExecutingToolCall,
   type ValidatingToolCall,
   type ErroredToolCall,
+  type SuccessfulToolCall,
   CoreToolCallStatus,
   type ScheduledToolCall,
 } from './types.js';
@@ -446,13 +447,16 @@ export class Scheduler {
         c.status === CoreToolCallStatus.Scheduled || this.isTerminal(c.status),
     );
 
+    let madeProgress = false;
     if (allReady && scheduledCalls.length > 0) {
-      await Promise.all(scheduledCalls.map((c) => this._execute(c, signal)));
+      const execResults = await Promise.all(
+        scheduledCalls.map((c) => this._execute(c, signal)),
+      );
+      madeProgress = execResults.some((res) => res);
     }
 
     // 3. Finalize terminal calls
     activeCalls = this.state.allActiveCalls;
-    let madeProgress = false;
     for (const call of activeCalls) {
       if (this.isTerminal(call.status)) {
         this.state.finalizeCall(call.request.callId);
@@ -595,12 +599,12 @@ export class Scheduler {
   // --- Sub-phase Handlers ---
 
   /**
-   * Executes the tool and records the result.
+   * Executes the tool and records the result. Returns true if a new tool call was added.
    */
   private async _execute(
     toolCall: ScheduledToolCall,
     signal: AbortSignal,
-  ): Promise<void> {
+  ): Promise<boolean> {
     const callId = toolCall.request.callId;
     if (signal.aborted) {
       this.state.updateStatus(
@@ -608,7 +612,7 @@ export class Scheduler {
         CoreToolCallStatus.Cancelled,
         'Operation cancelled',
       );
-      return;
+      return false;
     }
     this.state.updateStatus(callId, CoreToolCallStatus.Executing);
 
@@ -642,6 +646,64 @@ export class Scheduler {
         }),
     );
 
+    if (
+      (result.status === CoreToolCallStatus.Success ||
+        result.status === CoreToolCallStatus.Error) &&
+      result.tailToolCallRequest
+    ) {
+      // Log the intermediate tool call before it gets replaced.
+      const intermediateCall: SuccessfulToolCall | ErroredToolCall = {
+        request: activeCall.request,
+        tool: activeCall.tool,
+        invocation: activeCall.invocation,
+        status: result.status,
+        response: result.response,
+        durationMs: activeCall.startTime
+          ? Date.now() - activeCall.startTime
+          : undefined,
+        outcome: activeCall.outcome,
+        schedulerId: this.schedulerId,
+      };
+      logToolCall(this.config, new ToolCallEvent(intermediateCall));
+
+      const tailRequest = result.tailToolCallRequest;
+      const originalCallId = result.request.callId;
+      const originalRequestName =
+        result.request.originalRequestName || result.request.name;
+
+      const newTool = this.config.getToolRegistry().getTool(tailRequest.name);
+
+      const newRequest: ToolCallRequestInfo = {
+        callId: originalCallId,
+        name: tailRequest.name,
+        args: tailRequest.args,
+        originalRequestName,
+        isClientInitiated: result.request.isClientInitiated,
+        prompt_id: result.request.prompt_id,
+        schedulerId: this.schedulerId,
+      };
+
+      if (!newTool) {
+        // Enqueue an errored tool call
+        const errorCall = this._createToolNotFoundErroredToolCall(
+          newRequest,
+          this.config.getToolRegistry().getAllToolNames(),
+        );
+        this.state.replaceActiveCallWithTailCall(callId, errorCall);
+      } else {
+        // Enqueue a validating tool call for the new tail tool
+        const validatingCall = this._validateAndCreateToolCall(
+          newRequest,
+          newTool,
+          activeCall.approvalMode ?? this.config.getApprovalMode(),
+        );
+        this.state.replaceActiveCallWithTailCall(callId, validatingCall);
+      }
+
+      // Loop continues, picking up the new tail call at the front of the queue.
+      return true;
+    }
+
     if (result.status === CoreToolCallStatus.Success) {
       this.state.updateStatus(
         callId,
@@ -661,6 +723,7 @@ export class Scheduler {
         result.response,
       );
     }
+    return false;
   }
 
   private _processNextInRequestQueue() {

packages/core/src/scheduler/state-manager.ts

@@ -187,6 +187,19 @@ export class SchedulerStateManager {
     this.emitUpdate();
   }
 
+  /**
+   * Replaces the currently active call with a new call, placing the new call
+   * at the front of the queue to be processed immediately in the next tick.
+   * Used for Tail Calls to chain execution without finalizing the original call.
+   */
+  replaceActiveCallWithTailCall(callId: string, nextCall: ToolCall): void {
+    if (this.activeCalls.has(callId)) {
+      this.activeCalls.delete(callId);
+      this.queue.unshift(nextCall);
+      this.emitUpdate();
+    }
+  }
+
   cancelAllQueued(reason: string): void {
     if (this.queue.length === 0) {
       return;

packages/core/src/scheduler/tool-executor.test.ts

@@ -252,7 +252,17 @@ describe('ToolExecutor', () => {
     // 2. Mock executeToolWithHooks to trigger the PID callback
     const testPid = 12345;
     vi.mocked(coreToolHookTriggers.executeToolWithHooks).mockImplementation(
-      async (_inv, _name, _sig, _tool, _liveCb, _shellCfg, setPidCallback) => {
+      async (
+        _inv,
+        _name,
+        _sig,
+        _tool,
+        _liveCb,
+        _shellCfg,
+        setPidCallback,
+        _config,
+        _originalRequestName,
+      ) => {
         // Simulate the shell tool reporting a PID
         if (setPidCallback) {
           setPidCallback(testPid);

packages/core/src/scheduler/tool-executor.ts

@@ -99,6 +99,7 @@ export class ToolExecutor {
               shellExecutionConfig,
               setPidCallback,
               this.config,
+              request.originalRequestName,
             );
           } else {
             promise = executeToolWithHooks(
@@ -110,6 +111,7 @@ export class ToolExecutor {
               shellExecutionConfig,
               undefined,
               this.config,
+              request.originalRequestName,
             );
           }
 
@@ -133,6 +135,7 @@ export class ToolExecutor {
               new Error(toolResult.error.message),
               toolResult.error.type,
               displayText,
+              toolResult.tailToolCallRequest,
             );
           }
         } catch (executionError: unknown) {
@@ -204,7 +207,7 @@ export class ToolExecutor {
   ): Promise<SuccessfulToolCall> {
     let content = toolResult.llmContent;
     let outputFile: string | undefined;
-    const toolName = call.request.name;
+    const toolName = call.request.originalRequestName || call.request.name;
     const callId = call.request.callId;
 
     if (typeof content === 'string' && toolName === SHELL_TOOL_NAME) {
@@ -268,6 +271,7 @@ export class ToolExecutor {
       startTime,
       endTime: Date.now(),
       outcome: call.outcome,
+      tailToolCallRequest: toolResult.tailToolCallRequest,
     };
   }
 
@@ -276,6 +280,7 @@ export class ToolExecutor {
     error: Error,
     errorType?: ToolErrorType,
     returnDisplay?: string,
+    tailToolCallRequest?: { name: string; args: Record<string, unknown> },
   ): ErroredToolCall {
     const response = this.createErrorResponse(
       call.request,
@@ -289,11 +294,12 @@ export class ToolExecutor {
       status: CoreToolCallStatus.Error,
       request: call.request,
       response,
-      tool: call.tool,
+      tool: 'tool' in call ? call.tool : undefined,
       durationMs: startTime ? Date.now() - startTime : undefined,
       startTime,
       endTime: Date.now(),
       outcome: call.outcome,
+      tailToolCallRequest,
     };
   }
 
@@ -311,7 +317,7 @@ export class ToolExecutor {
         {
           functionResponse: {
             id: request.callId,
-            name: request.name,
+            name: request.originalRequestName || request.name,
             response: { error: error.message },
           },
         },

packages/core/src/scheduler/types.ts

@@ -36,6 +36,11 @@ export interface ToolCallRequestInfo {
   callId: string;
   name: string;
   args: Record<string, unknown>;
+  /**
+   * The original name of the tool requested by the model.
+   * This is used for tail calls to ensure the final response retains the original name.
+   */
+  originalRequestName?: string;
   isClientInitiated: boolean;
   prompt_id: string;
   checkpoint?: string;
@@ -58,6 +63,12 @@ export interface ToolCallResponseInfo {
   data?: Record<string, unknown>;
 }
 
+/** Request to execute another tool immediately after a completed one. */
+export interface TailToolCallRequest {
+  name: string;
+  args: Record<string, unknown>;
+}
+
 export type ValidatingToolCall = {
   status: CoreToolCallStatus.Validating;
   request: ToolCallRequestInfo;
@@ -91,6 +102,7 @@ export type ErroredToolCall = {
   outcome?: ToolConfirmationOutcome;
   schedulerId?: string;
   approvalMode?: ApprovalMode;
+  tailToolCallRequest?: TailToolCallRequest;
 };
 
 export type SuccessfulToolCall = {
@@ -105,6 +117,7 @@ export type SuccessfulToolCall = {
   outcome?: ToolConfirmationOutcome;
   schedulerId?: string;
   approvalMode?: ApprovalMode;
+  tailToolCallRequest?: TailToolCallRequest;
 };
 
 export type ExecutingToolCall = {
@@ -120,6 +133,7 @@ export type ExecutingToolCall = {
   pid?: number;
   schedulerId?: string;
   approvalMode?: ApprovalMode;
+  tailToolCallRequest?: TailToolCallRequest;
 };
 
 export type CancelledToolCall = {

packages/core/src/telemetry/clearcut-logger/clearcut-logger.ts

@@ -115,6 +115,8 @@ export enum EventNames {
   TOOL_OUTPUT_MASKING = 'tool_output_masking',
   KEYCHAIN_AVAILABILITY = 'keychain_availability',
   TOKEN_STORAGE_INITIALIZATION = 'token_storage_initialization',
+  CONSECA_POLICY_GENERATION = 'conseca_policy_generation',
+  CONSECA_VERDICT = 'conseca_verdict',
 }
 
 export interface LogResponse {

packages/core/src/telemetry/clearcut-logger/event-metadata-key.ts

@@ -7,7 +7,7 @@
 // Defines valid event metadata keys for Clearcut logging.
 export enum EventMetadataKey {
   // Deleted enums: 24
-  // Next ID: 159
+  // Next ID: 167
 
   GEMINI_CLI_KEY_UNKNOWN = 0,
 
@@ -605,4 +605,30 @@ export enum EventMetadataKey {
 
   // Logs whether the token storage type was forced by an environment variable.
   GEMINI_CLI_TOKEN_STORAGE_FORCED = 158,
+  // Conseca Event Keys
+  // ==========================================================================
+
+  // Logs the policy generation event.
+  CONSECA_POLICY_GENERATION = 159,
+
+  // Logs the verdict event.
+  CONSECA_VERDICT = 160,
+
+  // Logs the generated policy content.
+  CONSECA_GENERATED_POLICY = 161,
+
+  // Logs the verdict result (e.g. ALLOW/BLOCK).
+  CONSECA_VERDICT_RESULT = 162,
+
+  // Logs the verdict rationale.
+  CONSECA_VERDICT_RATIONALE = 163,
+
+  // Logs the trusted content used.
+  CONSECA_TRUSTED_CONTENT = 164,
+
+  // Logs the user prompt for Conseca events.
+  CONSECA_USER_PROMPT = 165,
+
+  // Logs the error message for Conseca events.
+  CONSECA_ERROR = 166,
 }

packages/core/src/telemetry/conseca-logger.test.ts

@@ -0,0 +1,145 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
+import { logs, type Logger } from '@opentelemetry/api-logs';
+import {
+  logConsecaPolicyGeneration,
+  logConsecaVerdict,
+} from './conseca-logger.js';
+import {
+  ConsecaPolicyGenerationEvent,
+  ConsecaVerdictEvent,
+  EVENT_CONSECA_POLICY_GENERATION,
+  EVENT_CONSECA_VERDICT,
+} from './types.js';
+import type { Config } from '../config/config.js';
+import * as sdk from './sdk.js';
+import { ClearcutLogger } from './clearcut-logger/clearcut-logger.js';
+
+vi.mock('@opentelemetry/api-logs');
+vi.mock('./sdk.js');
+vi.mock('./clearcut-logger/clearcut-logger.js');
+
+describe('conseca-logger', () => {
+  let mockConfig: Config;
+  let mockLogger: { emit: ReturnType<typeof vi.fn> };
+  let mockClearcutLogger: {
+    enqueueLogEvent: ReturnType<typeof vi.fn>;
+    createLogEvent: ReturnType<typeof vi.fn>;
+  };
+
+  beforeEach(() => {
+    mockConfig = {
+      getTelemetryEnabled: vi.fn().mockReturnValue(true),
+      getSessionId: vi.fn().mockReturnValue('test-session-id'),
+      getTelemetryLogPromptsEnabled: vi.fn().mockReturnValue(true),
+      isInteractive: vi.fn().mockReturnValue(true),
+      getExperiments: vi.fn().mockReturnValue({ experimentIds: [] }),
+    } as unknown as Config;
+
+    mockLogger = {
+      emit: vi.fn(),
+    };
+    vi.mocked(logs.getLogger).mockReturnValue(mockLogger as unknown as Logger);
+    vi.mocked(sdk.isTelemetrySdkInitialized).mockReturnValue(true);
+
+    mockClearcutLogger = {
+      enqueueLogEvent: vi.fn(),
+      createLogEvent: vi.fn().mockReturnValue({ event_name: 'test' }),
+    };
+    vi.mocked(ClearcutLogger.getInstance).mockReturnValue(
+      mockClearcutLogger as unknown as ClearcutLogger,
+    );
+  });
+
+  afterEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it('should log policy generation event to OTEL and Clearcut', () => {
+    const event = new ConsecaPolicyGenerationEvent(
+      'user prompt',
+      'trusted content',
+      'generated policy',
+    );
+
+    logConsecaPolicyGeneration(mockConfig, event);
+
+    // Verify OTEL
+    expect(logs.getLogger).toHaveBeenCalled();
+    expect(mockLogger.emit).toHaveBeenCalledWith(
+      expect.objectContaining({
+        body: 'Conseca Policy Generation.',
+        attributes: expect.objectContaining({
+          'event.name': EVENT_CONSECA_POLICY_GENERATION,
+        }),
+      }),
+    );
+
+    // Verify Clearcut
+    expect(ClearcutLogger.getInstance).toHaveBeenCalledWith(mockConfig);
+    expect(mockClearcutLogger.createLogEvent).toHaveBeenCalled();
+    expect(mockClearcutLogger.enqueueLogEvent).toHaveBeenCalled();
+  });
+
+  it('should log policy generation error to Clearcut', () => {
+    const event = new ConsecaPolicyGenerationEvent(
+      'user prompt',
+      'trusted content',
+      '{}',
+      'some error',
+    );
+
+    logConsecaPolicyGeneration(mockConfig, event);
+
+    expect(mockClearcutLogger.createLogEvent).toHaveBeenCalledWith(
+      expect.anything(),
+      expect.arrayContaining([
+        expect.objectContaining({
+          value: 'some error',
+        }),
+      ]),
+    );
+  });
+
+  it('should log verdict event to OTEL and Clearcut', () => {
+    const event = new ConsecaVerdictEvent(
+      'user prompt',
+      'policy',
+      'tool call',
+      'ALLOW',
+      'rationale',
+    );
+
+    logConsecaVerdict(mockConfig, event);
+
+    // Verify OTEL
+    expect(logs.getLogger).toHaveBeenCalled();
+    expect(mockLogger.emit).toHaveBeenCalledWith(
+      expect.objectContaining({
+        body: 'Conseca Verdict: ALLOW.',
+        attributes: expect.objectContaining({
+          'event.name': EVENT_CONSECA_VERDICT,
+        }),
+      }),
+    );
+
+    // Verify Clearcut
+    expect(ClearcutLogger.getInstance).toHaveBeenCalledWith(mockConfig);
+    expect(mockClearcutLogger.createLogEvent).toHaveBeenCalled();
+    expect(mockClearcutLogger.enqueueLogEvent).toHaveBeenCalled();
+  });
+
+  it('should not log if SDK is not initialized', () => {
+    vi.mocked(sdk.isTelemetrySdkInitialized).mockReturnValue(false);
+    const event = new ConsecaPolicyGenerationEvent('a', 'b', 'c');
+
+    logConsecaPolicyGeneration(mockConfig, event);
+
+    expect(mockLogger.emit).not.toHaveBeenCalled();
+  });
+});

packages/core/src/telemetry/conseca-logger.ts

@@ -0,0 +1,118 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import type { LogRecord } from '@opentelemetry/api-logs';
+import { logs } from '@opentelemetry/api-logs';
+import type { Config } from '../config/config.js';
+import { SERVICE_NAME } from './constants.js';
+import { isTelemetrySdkInitialized } from './sdk.js';
+import {
+  ClearcutLogger,
+  EventNames,
+} from './clearcut-logger/clearcut-logger.js';
+import { EventMetadataKey } from './clearcut-logger/event-metadata-key.js';
+import { safeJsonStringify } from '../utils/safeJsonStringify.js';
+import type {
+  ConsecaPolicyGenerationEvent,
+  ConsecaVerdictEvent,
+} from './types.js';
+import { debugLogger } from '../utils/debugLogger.js';
+
+export function logConsecaPolicyGeneration(
+  config: Config,
+  event: ConsecaPolicyGenerationEvent,
+): void {
+  debugLogger.debug('Conseca Policy Generation Event:', event);
+  const clearcutLogger = ClearcutLogger.getInstance(config);
+  if (clearcutLogger) {
+    const data = [
+      {
+        gemini_cli_key: EventMetadataKey.CONSECA_USER_PROMPT,
+        value: safeJsonStringify(event.user_prompt),
+      },
+      {
+        gemini_cli_key: EventMetadataKey.CONSECA_TRUSTED_CONTENT,
+        value: safeJsonStringify(event.trusted_content),
+      },
+      {
+        gemini_cli_key: EventMetadataKey.CONSECA_GENERATED_POLICY,
+        value: safeJsonStringify(event.policy),
+      },
+    ];
+
+    if (event.error) {
+      data.push({
+        gemini_cli_key: EventMetadataKey.CONSECA_ERROR,
+        value: event.error,
+      });
+    }
+
+    clearcutLogger.enqueueLogEvent(
+      clearcutLogger.createLogEvent(EventNames.CONSECA_POLICY_GENERATION, data),
+    );
+  }
+
+  if (!isTelemetrySdkInitialized()) return;
+
+  const logger = logs.getLogger(SERVICE_NAME);
+  const logRecord: LogRecord = {
+    body: event.toLogBody(),
+    attributes: event.toOpenTelemetryAttributes(config),
+  };
+  logger.emit(logRecord);
+}
+
+export function logConsecaVerdict(
+  config: Config,
+  event: ConsecaVerdictEvent,
+): void {
+  debugLogger.debug('Conseca Verdict Event:', event);
+  const clearcutLogger = ClearcutLogger.getInstance(config);
+  if (clearcutLogger) {
+    const data = [
+      {
+        gemini_cli_key: EventMetadataKey.CONSECA_USER_PROMPT,
+        value: safeJsonStringify(event.user_prompt),
+      },
+      {
+        gemini_cli_key: EventMetadataKey.CONSECA_GENERATED_POLICY,
+        value: safeJsonStringify(event.policy),
+      },
+      {
+        gemini_cli_key: EventMetadataKey.GEMINI_CLI_TOOL_CALL_NAME,
+        value: safeJsonStringify(event.tool_call),
+      },
+      {
+        gemini_cli_key: EventMetadataKey.CONSECA_VERDICT_RESULT,
+        value: safeJsonStringify(event.verdict),
+      },
+      {
+        gemini_cli_key: EventMetadataKey.CONSECA_VERDICT_RATIONALE,
+        value: event.verdict_rationale,
+      },
+    ];
+
+    if (event.error) {
+      data.push({
+        gemini_cli_key: EventMetadataKey.CONSECA_ERROR,
+        value: event.error,
+      });
+    }
+
+    clearcutLogger.enqueueLogEvent(
+      clearcutLogger.createLogEvent(EventNames.CONSECA_VERDICT, data),
+    );
+  }
+
+  if (!isTelemetrySdkInitialized()) return;
+
+  const logger = logs.getLogger(SERVICE_NAME);
+  const logRecord: LogRecord = {
+    body: event.toLogBody(),
+    attributes: event.toOpenTelemetryAttributes(config),
+  };
+  logger.emit(logRecord);
+}

packages/core/src/telemetry/index.ts

@@ -48,6 +48,10 @@ export {
   logWebFetchFallbackAttempt,
   logRewind,
 } from './loggers.js';
+export {
+  logConsecaPolicyGeneration,
+  logConsecaVerdict,
+} from './conseca-logger.js';
 export type { SlashCommandEvent, ChatCompressionEvent } from './types.js';
 export {
   SlashCommandStatus,
@@ -64,6 +68,8 @@ export {
   WebFetchFallbackAttemptEvent,
   ToolCallDecision,
   RewindEvent,
+  ConsecaPolicyGenerationEvent,
+  ConsecaVerdictEvent,
 } from './types.js';
 export { LlmRole } from './llmRole.js';
 export { makeSlashCommandEvent, makeChatCompressionEvent } from './types.js';

packages/core/src/telemetry/types.ts

@@ -879,6 +879,105 @@ export class NextSpeakerCheckEvent implements BaseTelemetryEvent {
   }
 }
 
+export const EVENT_CONSECA_POLICY_GENERATION =
+  'gemini_cli.conseca.policy_generation';
+export class ConsecaPolicyGenerationEvent implements BaseTelemetryEvent {
+  'event.name': 'conseca_policy_generation';
+  'event.timestamp': string;
+  user_prompt: string;
+  trusted_content: string;
+  policy: string;
+  error?: string;
+
+  constructor(
+    user_prompt: string,
+    trusted_content: string,
+    policy: string,
+    error?: string,
+  ) {
+    this['event.name'] = 'conseca_policy_generation';
+    this['event.timestamp'] = new Date().toISOString();
+    this.user_prompt = user_prompt;
+    this.trusted_content = trusted_content;
+    this.policy = policy;
+    this.error = error;
+  }
+
+  toOpenTelemetryAttributes(config: Config): LogAttributes {
+    const attributes: LogAttributes = {
+      ...getCommonAttributes(config),
+      'event.name': EVENT_CONSECA_POLICY_GENERATION,
+      'event.timestamp': this['event.timestamp'],
+      user_prompt: this.user_prompt,
+      trusted_content: this.trusted_content,
+      policy: this.policy,
+    };
+
+    if (this.error) {
+      attributes['error'] = this.error;
+    }
+
+    return attributes;
+  }
+
+  toLogBody(): string {
+    return `Conseca Policy Generation.`;
+  }
+}
+
+export const EVENT_CONSECA_VERDICT = 'gemini_cli.conseca.verdict';
+export class ConsecaVerdictEvent implements BaseTelemetryEvent {
+  'event.name': 'conseca_verdict';
+  'event.timestamp': string;
+  user_prompt: string;
+  policy: string;
+  tool_call: string;
+  verdict: string;
+  verdict_rationale: string;
+  error?: string;
+
+  constructor(
+    user_prompt: string,
+    policy: string,
+    tool_call: string,
+    verdict: string,
+    verdict_rationale: string,
+    error?: string,
+  ) {
+    this['event.name'] = 'conseca_verdict';
+    this['event.timestamp'] = new Date().toISOString();
+    this.user_prompt = user_prompt;
+    this.policy = policy;
+    this.tool_call = tool_call;
+    this.verdict = verdict;
+    this.verdict_rationale = verdict_rationale;
+    this.error = error;
+  }
+
+  toOpenTelemetryAttributes(config: Config): LogAttributes {
+    const attributes: LogAttributes = {
+      ...getCommonAttributes(config),
+      'event.name': EVENT_CONSECA_VERDICT,
+      'event.timestamp': this['event.timestamp'],
+      user_prompt: this.user_prompt,
+      policy: this.policy,
+      tool_call: this.tool_call,
+      verdict: this.verdict,
+      verdict_rationale: this.verdict_rationale,
+    };
+
+    if (this.error) {
+      attributes['error'] = this.error;
+    }
+
+    return attributes;
+  }
+
+  toLogBody(): string {
+    return `Conseca Verdict: ${this.verdict}.`;
+  }
+}
+
 export const EVENT_SLASH_COMMAND = 'gemini_cli.slash_command';
 export interface SlashCommandEvent extends BaseTelemetryEvent {
   'event.name': 'slash_command';

packages/core/src/tools/mcp-tool.ts

@@ -80,6 +80,8 @@ export class DiscoveredMCPToolInvocation extends BaseToolInvocation<
     readonly trust?: boolean,
     params: ToolParams = {},
     private readonly cliConfig?: Config,
+    private readonly toolDescription?: string,
+    private readonly toolParameterSchema?: unknown,
   ) {
     // Use composite format for policy checks: serverName__toolName
     // This enables server wildcards (e.g., "google-workspace__*")
@@ -123,6 +125,9 @@ export class DiscoveredMCPToolInvocation extends BaseToolInvocation<
       serverName: this.serverName,
       toolName: this.serverToolName, // Display original tool name in confirmation
       toolDisplayName: this.displayName, // Display global registry name exposed to model and user
+      toolArgs: this.params,
+      toolDescription: this.toolDescription,
+      toolParameterSchema: this.toolParameterSchema,
       onConfirm: async (outcome: ToolConfirmationOutcome) => {
         if (outcome === ToolConfirmationOutcome.ProceedAlwaysServer) {
           DiscoveredMCPToolInvocation.allowlist.add(serverAllowListKey);
@@ -317,6 +322,8 @@ export class DiscoveredMCPTool extends BaseDeclarativeTool<
       this.trust,
       params,
       this.cliConfig,
+      this.description,
+      this.parameterSchema,
     );
   }
 }

packages/core/src/tools/tools.ts

@@ -579,6 +579,15 @@ export interface ToolResult {
    * Optional data payload for passing structured information back to the caller.
    */
   data?: Record<string, unknown>;
+
+  /**
+   * Optional request to execute another tool immediately after this one.
+   * The result of this tail call will replace the original tool's response.
+   */
+  tailToolCallRequest?: {
+    name: string;
+    args: Record<string, unknown>;
+  };
 }
 
 /**
@@ -757,6 +766,9 @@ export interface ToolMcpConfirmationDetails {
   serverName: string;
   toolName: string;
   toolDisplayName: string;
+  toolArgs?: Record<string, unknown>;
+  toolDescription?: string;
+  toolParameterSchema?: unknown;
   onConfirm: (outcome: ToolConfirmationOutcome) => Promise<void>;
 }
 

packages/core/src/utils/textUtils.test.ts

@@ -5,7 +5,11 @@
  */
 
 import { describe, it, expect } from 'vitest';
-import { safeLiteralReplace, truncateString } from './textUtils.js';
+import {
+  safeLiteralReplace,
+  truncateString,
+  safeTemplateReplace,
+} from './textUtils.js';
 
 describe('safeLiteralReplace', () => {
   it('returns original string when oldString empty or not found', () => {
@@ -99,3 +103,60 @@ describe('truncateString', () => {
     expect(truncateString('', 5)).toBe('');
   });
 });
+
+describe('safeTemplateReplace', () => {
+  it('replaces all occurrences of known keys', () => {
+    const tmpl = 'Hello {{name}}, welcome to {{place}}. {{name}} is happy.';
+    const replacements = { name: 'Alice', place: 'Wonderland' };
+    expect(safeTemplateReplace(tmpl, replacements)).toBe(
+      'Hello Alice, welcome to Wonderland. Alice is happy.',
+    );
+  });
+
+  it('ignores keys not present in replacements', () => {
+    const tmpl = 'Hello {{name}}, welcome to {{unknown}}.';
+    const replacements = { name: 'Bob' };
+    expect(safeTemplateReplace(tmpl, replacements)).toBe(
+      'Hello Bob, welcome to {{unknown}}.',
+    );
+  });
+
+  it('ignores extra keys in replacements', () => {
+    const tmpl = 'Hello {{name}}';
+    const replacements = { name: 'Charlie', age: '30' };
+    expect(safeTemplateReplace(tmpl, replacements)).toBe('Hello Charlie');
+  });
+
+  it('handles empty template', () => {
+    expect(safeTemplateReplace('', { key: 'val' })).toBe('');
+  });
+
+  it('handles template with no placeholders', () => {
+    expect(safeTemplateReplace('No keys here', { key: 'val' })).toBe(
+      'No keys here',
+    );
+  });
+
+  it('prevents double interpolation (security check)', () => {
+    const tmpl = 'User said: {{userInput}}';
+    const replacements = {
+      userInput: '{{secret}}',
+      secret: 'super_secret_value',
+    };
+    expect(safeTemplateReplace(tmpl, replacements)).toBe(
+      'User said: {{secret}}',
+    );
+  });
+
+  it('handles values with $ signs correctly (no regex group substitution)', () => {
+    const tmpl = 'Price: {{price}}';
+    const replacements = { price: '$100' };
+    expect(safeTemplateReplace(tmpl, replacements)).toBe('Price: $100');
+  });
+
+  it('treats special replacement patterns (e.g. "$&") as literal strings', () => {
+    const tmpl = 'Value: {{val}}';
+    const replacements = { val: '$&' };
+    expect(safeTemplateReplace(tmpl, replacements)).toBe('Value: $&');
+  });
+});

packages/core/src/utils/textUtils.ts

@@ -82,3 +82,24 @@ export function truncateString(
   }
   return str.slice(0, maxLength) + suffix;
 }
+
+/**
+ * Safely replaces placeholders in a template string with values from a replacements object.
+ * This performs a single-pass replacement to prevent double-interpolation attacks.
+ *
+ * @param template The template string containing {{key}} placeholders.
+ * @param replacements A record of keys to their replacement values.
+ * @returns The resulting string with placeholders replaced.
+ */
+export function safeTemplateReplace(
+  template: string,
+  replacements: Record<string, string>,
+): string {
+  // Regex to match {{key}} in the template string. The regex enforces string naming rules.
+  const placeHolderRegex = /\{\{(\w+)\}\}/g;
+  return template.replace(placeHolderRegex, (match, key) =>
+    Object.prototype.hasOwnProperty.call(replacements, key)
+      ? replacements[key]
+      : match,
+  );
+}

schemas/settings.schema.json

@@ -1479,6 +1479,13 @@
             }
           },
           "additionalProperties": false
+        },
+        "enableConseca": {
+          "title": "Enable Context-Aware Security",
+          "description": "Enable the context-aware security checker. This feature uses an LLM to dynamically generate and enforce security policies for tool use based on your prompt, providing an additional layer of protection against unintended actions.",
+          "markdownDescription": "Enable the context-aware security checker. This feature uses an LLM to dynamically generate and enforce security policies for tool use based on your prompt, providing an additional layer of protection against unintended actions.\n\n- Category: `Security`\n- Requires restart: `yes`\n- Default: `false`",
+          "default": false,
+          "type": "boolean"
         }
       },
       "additionalProperties": false