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API Tester

Test any HTTP endpoint by sending GET, POST, PUT, or DELETE requests directly from your browser. View response status, headers, and body.

100% Local Browser Native

How to Use the API Tester

1. Set method and endpoint

GET/POST/PUT with URL, headers, and body. Test keys only — never production secrets.

2. Send and inspect

Read status, timing, and body: 401 means auth is wrong, 422 means the body shape is off.

3. Save the working call

Keep successful requests in collections; copy the snippet into your codebase.

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Frequently Asked Questions

What can I test?

Endpoints, methods, headers, and bodies — REST, GraphQL, and SOAP calls alike.

Do I need an API key to test?

Only for protected endpoints — public APIs test with no credentials.

Are responses timed?

Yes — status, body, headers, and round-trip time on every call.

Is my traffic uploaded anywhere?

Requests go to the APIs you target by necessity; the tool itself runs locally, free with no signup.

How much of a response do I see?

The first 2,000 characters, with an explicit truncation note stating how many total chars arrived when longer. Requests abort after 20 seconds, and only http(s) URLs are allowed.

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Last updated October 2026