{"name":"BrokerGPT RAG API","version":"2.2.0","status":"running","auth":"enabled (JWT required)","endpoints":{"POST /":"Chat endpoint (requires JSON body with message)","GET /health":"Health check with detailed status","GET /metrics":"Request metrics and statistics","GET /user/limits":"Your personal rate limits and usage (requires auth)","GET /admin/usage/summary":"System-wide cost summary (admin only)","GET /admin/usage/users":"Top users by cost (admin only, query: period, limit)","GET /admin/usage/daily":"Daily cost breakdown (admin only, query: days)"},"usage":{"method":"POST","headers":{"Content-Type":"application/json","Authorization":"Bearer <supabase-jwt>"},"body":{"message":"Your question here","sessionId":"optional-session-id","stream":false}}}