POST /sessions

The endpoint POST /sessions and POST /sessions/{session_id}/message are part of the same agent.py module, together handling agent session creation and messaging. The endpoint POST /sessions and POST /sessions/{session_id}/message are part of the same agent_openclaw.py module, together handling agent session creation and messaging. The endpoint POST /sessions and POST /sessions/{session_id}/message are part of the same agent_pydantic.py module, together handling agent session creation and messaging. The endpoint POST /sessions and POST /sessions/{session_id}/message are part of the same agent_vanna.py module, together handling agent session creation and messaging. Health check endpoint monitors the overall availability of the agent service which includes session creation functionality.