Define your API routes manually. Set the HTTP method, path, and status code for each endpoint. Click Edit body on any route to set the JSON response it will return.
Build and test APIs instantly — no account, no backend, no setup.
General Hook is a free mock API server and webhook inspector that runs entirely in your browser. Define custom endpoints with JSON responses, import an OpenAPI or Postman spec, or spin up a public webhook receiver to inspect live payloads — all without installing anything or creating an account.
Powered by WebAssembly, your server runs directly inside this browser tab. Nothing is sent to an external server and no data leaves your device.
