Postman Echo

Test api server to receive and return value from HTTP method

Postman Echo is a free test API service that mirrors back whatever you send it — headers, query parameters, request body, cookies, and more. It supports all HTTP methods (GET, POST, PUT, PATCH, DELETE) and provides utility endpoints for testing authentication, delays, redirects, and response codes. For OpenClaw agents, Postman Echo is useful during skill development and debugging. When building a new skill that makes HTTP requests, you can point it at Postman Echo first to verify your request format, headers, and body are correct before hitting a real API. It's also great for testing OpenClaw's HTTP handling capabilities.

Tags: utility, validation

Category: Data Validation

Use Cases

  • Debug HTTP request formatting when building new OpenClaw skills
  • Test authentication header handling before connecting to real APIs
  • Verify OpenClaw's HTTP method support during skill development

Tips

  • Use the /delay endpoint to simulate slow APIs when testing timeout handling
  • The /response-headers endpoint lets you test how your skill handles custom headers
  • Great for testing error handling — use /status/{code} to simulate specific HTTP errors

Known Issues & Gotchas

  • Not meant for production — only for development and testing
  • Response times may vary since it's a free shared service
  • Don't send sensitive data to it — everything is echoed back and could be logged

Frequently Asked Questions

Is Postman Echo meant for production use?

No. It's a testing and debugging tool. Don't use it in production skills — it's for verifying your HTTP requests work correctly before pointing them at real APIs.

What HTTP methods does Postman Echo support?

All standard methods: GET, POST, PUT, PATCH, DELETE. It also has endpoints for testing Basic Auth, OAuth, cookies, redirects, and response delays.

Does it require any authentication?

No. Postman Echo is completely open with no authentication required. It has dedicated endpoints for testing auth flows, but the echo service itself is unauthenticated.