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responses & tracing

Understanding agent response formats and message structures in Letta Cloud.

Debug and analyze your agent’s execution with detailed tracing.

View all API responses with key details:

  • Timestamp: When processed
  • Duration: Server processing time
  • Status: Success/error codes
  • Source: Originating application
  • Payload: Full request/response data

Click “Inspect Message” to trace agent execution:

  • Original POST request that triggered the agent
  • All parameters and context information

Step-by-step execution flow:

  1. Input Processing: How the server interpreted the request
  2. Tool Invocations: Each tool called with parameters, timing, and results
  3. Memory Updates: How agent memory was modified
  4. Agent Messages: Prompts, responses, and token usage
  5. Response Completion: Final response construction
  • Performance: Identify bottlenecks and optimization opportunities
  • Errors: Pinpoint failure points with stack traces
  • Behavior: Understand agent decision-making process