{"state":"missing_x_agent_id","code":"MISSING_AGENT_ID","message":"x-agent-id header is required — this endpoint returns agent-scoped data.","docs":"https://flipr-x402.fly.dev/integration","example":"curl -H \"x-agent-id: my-bot-v1\" https://flipr-x402.fly.dev/flips/history","_hint":"Free endpoint, but agent-scoped: pass your bot's identifier and you'll get records for that specific agent."}