diff --git a/packages/services/conversation-service/src/infrastructure/agents/coordinator/input-gate.service.ts b/packages/services/conversation-service/src/infrastructure/agents/coordinator/input-gate.service.ts
index bf3c52b..97aa7be 100644
--- a/packages/services/conversation-service/src/infrastructure/agents/coordinator/input-gate.service.ts
+++ b/packages/services/conversation-service/src/infrastructure/agents/coordinator/input-gate.service.ts
@@ -61,7 +61,9 @@ export class InputGateService {
         temperature: 0,
       });
 
-      const text = (response.content[0] as { type: string; text?: string })?.text || '';
+      const rawText = (response.content[0] as { type: string; text?: string })?.text || '';
+      // Haiku sometimes wraps JSON in ```json ... ``` — strip markdown code fences
+      const text = rawText.replace(/^```(?:json)?\s*\n?/i, '').replace(/\n?```\s*$/i, '').trim();
       const parsed = JSON.parse(text);
 
       const classification: InputClassification = parsed.classification || 'ON_TOPIC';