diff --git a/extension/src/extension.ts b/extension/src/extension.ts
index a3a4ffa..51b78ac 100644
--- a/extension/src/extension.ts
+++ b/extension/src/extension.ts
@@ -97,6 +97,36 @@ export function activate(context: vscode.ExtensionContext) {
         vscode.commands.registerCommand('gravityBridge.reject', () => handleManualAction(false)),
     );
 
+    // Probe getDiagnostics to discover AI response data structure
+    setTimeout(async () => {
+        try {
+            const diag: any = await vscode.commands.executeCommand('antigravity.getDiagnostics');
+            if (typeof diag === 'string') {
+                const parsed = JSON.parse(diag);
+                console.log(`Gravity Bridge: getDiagnostics keys: ${Object.keys(parsed).join(', ')}`);
+                // Sample each key to understand structure
+                for (const key of Object.keys(parsed)) {
+                    const val = parsed[key];
+                    if (Array.isArray(val)) {
+                        console.log(`  [${key}] Array(${val.length})`);
+                        if (val.length > 0) {
+                            const sample = val[val.length - 1]; // last item
+                            console.log(`    last: ${JSON.stringify(sample).substring(0, 300)}`);
+                        }
+                    } else if (typeof val === 'object') {
+                        console.log(`  [${key}] Object: ${JSON.stringify(val).substring(0, 200)}`);
+                    } else {
+                        console.log(`  [${key}] ${typeof val}: ${String(val).substring(0, 100)}`);
+                    }
+                }
+            } else {
+                console.log(`Gravity Bridge: getDiagnostics returned ${typeof diag}`);
+            }
+        } catch (e) {
+            console.log(`Gravity Bridge: getDiagnostics error: ${e}`);
+        }
+    }, 5000);
+
     // Chat document change listener — captures AI text responses
     context.subscriptions.push(
         vscode.workspace.onDidChangeTextDocument((event) => {