API Request Builder
Build HTTP requests with method, URL, headers, and body — then generate matching curl commands. Prototype endpoints without leaving the tab — local, free, no signup.
How to Use the API Request Builder
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Frequently Asked Questions
How do I build my first request?
Set GET with the endpoint URL, add headers (Authorization: Bearer <token>), then send: status, timing, and body return instantly. Save working calls into collections.
Does it send real requests?
Yes — requests fire from your browser with the Fetch API against live endpoints. Use staging URLs and test keys; production secrets stay out of the tool.
Can I export to curl?
Yes — every built request generates an equivalent curl command for terminals, docs, and bug reports. Headers and bodies translate exactly.
Are my API keys exposed?
No — requests run locally in your browser; keys never pass through our servers. Collections save to localStorage on your machine only.
What happens if I add a body to a GET request?
The builder keeps your text but excludes it from the curl, appending a "# Body omitted: GET requests carry no body" note. Five methods are offered (GET, POST, PUT, PATCH, DELETE), and header lines without a colon are rejected as bad lines.
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Last updated October 2026