diff --git a/eslint.config.js b/eslint.config.js
index 99b1b28f4b..dc05e6ab42 100644
--- a/eslint.config.js
+++ b/eslint.config.js
@@ -52,6 +52,7 @@ export default tseslint.config(
       'packages/test-utils/**',
       '.gemini/skills/**',
       '**/*.d.ts',
+      'packages/core/src/teleportation/trajectory_teleporter.min.js',
     ],
   },
   eslint.configs.recommended,
diff --git a/packages/core/src/teleportation/discovery.ts b/packages/core/src/teleportation/discovery.ts
new file mode 100644
index 0000000000..7cd9edf2b6
--- /dev/null
+++ b/packages/core/src/teleportation/discovery.ts
@@ -0,0 +1,101 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import fs from 'node:fs/promises';
+import path from 'node:path';
+import os from 'node:os';
+import { trajectoryToJson } from './teleporter.js';
+import { convertAgyToCliRecord } from './converter.js';
+import { partListUnionToString } from '../core/geminiRequest.js';
+
+export interface AgySessionInfo {
+  id: string;
+  path: string;
+  mtime: string;
+  displayName?: string;
+  messageCount?: number;
+}
+
+const AGY_CONVERSATIONS_DIR = path.join(
+  os.homedir(),
+  '.gemini',
+  'jetski',
+  'conversations',
+);
+
+/**
+ * Lists all Antigravity sessions found on disk.
+ */
+export async function listAgySessions(): Promise<AgySessionInfo[]> {
+  try {
+    const files = await fs.readdir(AGY_CONVERSATIONS_DIR);
+    const sessions: AgySessionInfo[] = [];
+
+    for (const file of files) {
+      if (file.endsWith('.pb')) {
+        const filePath = path.join(AGY_CONVERSATIONS_DIR, file);
+        const stats = await fs.stat(filePath);
+        const id = path.basename(file, '.pb');
+
+        let details = {};
+        try {
+          const data = await fs.readFile(filePath);
+          const json = trajectoryToJson(data);
+          details = extractAgyDetails(json);
+        } catch (_error) {
+          // Ignore errors during parsing
+        }
+
+        sessions.push({
+          id,
+          path: filePath,
+          mtime: stats.mtime.toISOString(),
+          ...details,
+        });
+      }
+    }
+
+    return sessions;
+  } catch (_error) {
+    // If directory doesn't exist, just return empty list
+    return [];
+  }
+}
+
+function extractAgyDetails(json: unknown): {
+  displayName?: string;
+  messageCount?: number;
+} {
+  try {
+    const record = convertAgyToCliRecord(json);
+    const messages = record.messages || [];
+
+    // Find first user message for display name
+    const firstUserMsg = messages.find((m) => m.type === 'user');
+    const displayName = firstUserMsg
+      ? partListUnionToString(firstUserMsg.content).slice(0, 100)
+      : 'Antigravity Session';
+
+    return {
+      displayName,
+      messageCount: messages.length,
+    };
+  } catch (_error) {
+    return {};
+  }
+}
+
+/**
+ * Loads the raw binary data of an Antigravity session.
+ */
+export async function loadAgySession(id: string): Promise<Buffer | null> {
+  const filePath = path.join(AGY_CONVERSATIONS_DIR, `${id}.pb`);
+  try {
+    return await fs.readFile(filePath);
+  } catch (_error) {
+    return null;
+  }
+}
diff --git a/packages/core/src/teleportation/teleporter.ts b/packages/core/src/teleportation/teleporter.ts
new file mode 100644
index 0000000000..7365200940
--- /dev/null
+++ b/packages/core/src/teleportation/teleporter.ts
@@ -0,0 +1,26 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { createRequire } from 'node:module';
+const require = createRequire(import.meta.url);
+
+// Import the bundled teleporter which contains the protobuf definitions and decryption logic
+// eslint-disable-next-line no-restricted-syntax
+const teleporter = require('./trajectory_teleporter.min.js');
+
+/**
+ * Decrypts and parses an Antigravity trajectory file (.pb) into JSON.
+ */
+export function trajectoryToJson(data: Buffer): unknown {
+  return teleporter.trajectoryToJson(data);
+}
+
+/**
+ * Converts a JSON trajectory back to encrypted binary format.
+ */
+export function jsonToTrajectory(json: unknown): Buffer {
+  return teleporter.jsonToTrajectory(json);
+}