API Tester
Send HTTP requests (GET, POST, etc.) and examine headers and bodies.
Postman Replica API Studio
Multi-tab HTTP client studio for testing REST endpoints, headers, auth, and request payloads.
Query Parameters
Response Inspector
Enter URL endpoint and click "Send" to inspect API responses.
All HTTP requests execute directly via your client browser sandbox (`window.fetch`). Supports custom CORS headers and REST JSON APIs.