diff --git a/packages/core/src/services/loopDetectionService.test.ts b/packages/core/src/services/loopDetectionService.test.ts
index e464bfb6c9..cb06ad8ef2 100644
--- a/packages/core/src/services/loopDetectionService.test.ts
+++ b/packages/core/src/services/loopDetectionService.test.ts
@@ -671,7 +671,7 @@ describe('LoopDetectionService LLM Checks', () => {
   it('should trigger LLM check on the 30th turn', async () => {
     mockBaseLlmClient.generateJson = vi
       .fn()
-      .mockResolvedValue({ confidence: 0.1 });
+      .mockResolvedValue({ unproductive_state_confidence: 0.1 });
     await advanceTurns(30);
     expect(mockBaseLlmClient.generateJson).toHaveBeenCalledTimes(1);
     expect(mockBaseLlmClient.generateJson).toHaveBeenCalledWith(
@@ -687,9 +687,10 @@ describe('LoopDetectionService LLM Checks', () => {
 
   it('should detect a cognitive loop when confidence is high', async () => {
     // First check at turn 30
-    mockBaseLlmClient.generateJson = vi
-      .fn()
-      .mockResolvedValue({ confidence: 0.85, reasoning: 'Repetitive actions' });
+    mockBaseLlmClient.generateJson = vi.fn().mockResolvedValue({
+      unproductive_state_confidence: 0.85,
+      unproductive_state_analysis: 'Repetitive actions',
+    });
     await advanceTurns(30);
     expect(mockBaseLlmClient.generateJson).toHaveBeenCalledTimes(1);
 
@@ -697,9 +698,10 @@ describe('LoopDetectionService LLM Checks', () => {
     // The interval will be: 5 + (15 - 5) * (1 - 0.85) = 5 + 10 * 0.15 = 6.5 -> rounded to 7
     await advanceTurns(6); // advance to turn 36
 
-    mockBaseLlmClient.generateJson = vi
-      .fn()
-      .mockResolvedValue({ confidence: 0.95, reasoning: 'Repetitive actions' });
+    mockBaseLlmClient.generateJson = vi.fn().mockResolvedValue({
+      unproductive_state_confidence: 0.95,
+      unproductive_state_analysis: 'Repetitive actions',
+    });
     const finalResult = await service.turnStarted(abortController.signal); // This is turn 37
 
     expect(finalResult).toBe(true);
@@ -713,9 +715,10 @@ describe('LoopDetectionService LLM Checks', () => {
   });
 
   it('should not detect a loop when confidence is low', async () => {
-    mockBaseLlmClient.generateJson = vi
-      .fn()
-      .mockResolvedValue({ confidence: 0.5, reasoning: 'Looks okay' });
+    mockBaseLlmClient.generateJson = vi.fn().mockResolvedValue({
+      unproductive_state_confidence: 0.5,
+      unproductive_state_analysis: 'Looks okay',
+    });
     await advanceTurns(30);
     const result = await service.turnStarted(abortController.signal);
     expect(result).toBe(false);
@@ -726,7 +729,7 @@ describe('LoopDetectionService LLM Checks', () => {
     // Confidence is 0.0, so interval should be MAX_LLM_CHECK_INTERVAL (15)
     mockBaseLlmClient.generateJson = vi
       .fn()
-      .mockResolvedValue({ confidence: 0.0 });
+      .mockResolvedValue({ unproductive_state_confidence: 0.0 });
     await advanceTurns(30); // First check at turn 30
     expect(mockBaseLlmClient.generateJson).toHaveBeenCalledTimes(1);
 
@@ -771,7 +774,7 @@ describe('LoopDetectionService LLM Checks', () => {
 
     mockBaseLlmClient.generateJson = vi
       .fn()
-      .mockResolvedValue({ confidence: 0.1 });
+      .mockResolvedValue({ unproductive_state_confidence: 0.1 });
 
     await advanceTurns(30);
 
diff --git a/packages/core/src/services/loopDetectionService.ts b/packages/core/src/services/loopDetectionService.ts
index ac291b679d..e70ae83ffe 100644
--- a/packages/core/src/services/loopDetectionService.ts
+++ b/packages/core/src/services/loopDetectionService.ts
@@ -413,18 +413,21 @@ export class LoopDetectionService {
     const schema: Record<string, unknown> = {
       type: 'object',
       properties: {
-        reasoning: {
+        unproductive_state_analysis: {
           type: 'string',
           description:
             'Your reasoning on if the conversation is looping without forward progress.',
         },
-        confidence: {
+        unproductive_state_confidence: {
           type: 'number',
           description:
             'A number between 0.0 and 1.0 representing your confidence that the conversation is in an unproductive state.',
         },
       },
-      required: ['reasoning', 'confidence'],
+      required: [
+        'unproductive_state_analysis',
+        'unproductive_state_confidence',
+      ],
     };
     let result;
     try {
@@ -442,10 +445,13 @@ export class LoopDetectionService {
       return false;
     }
 
-    if (typeof result['confidence'] === 'number') {
-      if (result['confidence'] > 0.9) {
-        if (typeof result['reasoning'] === 'string' && result['reasoning']) {
-          debugLogger.warn(result['reasoning']);
+    if (typeof result['unproductive_state_confidence'] === 'number') {
+      if (result['unproductive_state_confidence'] > 0.9) {
+        if (
+          typeof result['unproductive_state_analysis'] === 'string' &&
+          result['unproductive_state_analysis']
+        ) {
+          debugLogger.warn(result['unproductive_state_analysis']);
         }
         logLoopDetected(
           this.config,
@@ -456,7 +462,7 @@ export class LoopDetectionService {
         this.llmCheckInterval = Math.round(
           MIN_LLM_CHECK_INTERVAL +
             (MAX_LLM_CHECK_INTERVAL - MIN_LLM_CHECK_INTERVAL) *
-              (1 - result['confidence']),
+              (1 - result['unproductive_state_confidence']),
         );
       }
     }