Can it test APIs that require authentication?

Yes, you can add Authorization headers such as Bearer tokens, API keys, or Basic Auth in the Headers section before sending the request.

Does it support all HTTP methods?

Yes, GET, POST, PUT, PATCH, DELETE, HEAD, and OPTIONS are all supported. Select the method from the dropdown before sending.

Why does my request fail with a CORS error?

CORS errors occur when the API server does not allow requests from browser origins. APIs designed for server-to-server calls typically block browser requests. Use a server-side proxy or test APIs that support browser CORS.

Can I send JSON in the request body?

Yes, select the POST, PUT, or PATCH method, add a Content-Type: application/json header, and paste your JSON body in the Body field.

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API Request Tester

Test REST APIs directly in your browser. Send GET, POST, PUT, DELETE requests with custom headers, query params, and JSON body. Free lightweight Postman alternative.

API Request Tester — Test REST APIs Online

Test any REST API endpoint without installing software. This free online tool supports all HTTP methods: GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS. Add custom headers, query parameters, Bearer token authentication, and JSON body with live response formatting.

Public APIs to Try

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