Migrate beforeTool and afterTool hooks to hookSystem (#17204)

Co-authored-by: Ishaan Gupta <ishaankone@gmail.com>
Co-authored-by: Tommaso Sciortino <sciortino@gmail.com>

packages/core/src/hooks/hookSystem.ts

@@ -22,6 +22,7 @@ import type {
   BeforeModelHookOutput,
   AfterModelHookOutput,
   BeforeToolSelectionHookOutput,
+  McpToolContext,
 } from './types.js';
 import type { AggregatedHookResult } from './hookAggregator.js';
 import type {
@@ -297,4 +298,46 @@ export class HookSystem {
       return {};
     }
   }
+
+  async fireBeforeToolEvent(
+    toolName: string,
+    toolInput: Record<string, unknown>,
+    mcpContext?: McpToolContext,
+  ): Promise<DefaultHookOutput | undefined> {
+    try {
+      const result = await this.hookEventHandler.fireBeforeToolEvent(
+        toolName,
+        toolInput,
+        mcpContext,
+      );
+      return result.finalOutput;
+    } catch (error) {
+      debugLogger.debug(`BeforeTool hook failed for ${toolName}:`, error);
+      return undefined;
+    }
+  }
+
+  async fireAfterToolEvent(
+    toolName: string,
+    toolInput: Record<string, unknown>,
+    toolResponse: {
+      llmContent: unknown;
+      returnDisplay: unknown;
+      error: unknown;
+    },
+    mcpContext?: McpToolContext,
+  ): Promise<DefaultHookOutput | undefined> {
+    try {
+      const result = await this.hookEventHandler.fireAfterToolEvent(
+        toolName,
+        toolInput,
+        toolResponse as Record<string, unknown>,
+        mcpContext,
+      );
+      return result.finalOutput;
+    } catch (error) {
+      debugLogger.debug(`AfterTool hook failed for ${toolName}:`, error);
+      return undefined;
+    }
+  }
 }