Build HTTP requests visually with method, headers, body, and params. Send via fetch and see the full response. Like a mini Postman.
Select GET, POST, PUT, DELETE, or another HTTP method.
Type the full API URL including any path parameters.
Set authorization headers, content type, and request body as needed.
Export the formatted request as cURL, fetch, or your preferred format.
This tool gives you fields for an HTTP method, URL, query parameters, headers, and a request body, then fires the request using your browser's fetch and renders the status code, response headers, and body it gets back. Because the request leaves from your browser tab rather than a desktop app or server, the most common surprise is CORS: if the target API doesn't send an Access-Control-Allow-Origin header permitting this page's origin, the browser blocks you from reading the response even when the server processed the request successfully.
Method, URL, a key-value table for query parameters, a key-value table for headers, and a body editor (raw text or JSON) are combined into a single outgoing request. Query params you add are URL-encoded and appended to the URL automatically, so you don't hand-build the query string.
The request is sent with the browser's built-in fetch. The tool reports the resolved status code and status text, lists every response header the browser exposes, and pretty-prints the body if it parses as JSON, otherwise shows it as plain text. Network failures and CORS blocks surface as a generic fetch error rather than a detailed cause, since browsers don't expose that detail to scripts.
Yes - add it as a header, typically Authorization: Bearer <token>, in the headers table before sending. The tool doesn't run an OAuth flow for you or store the token between visits; you supply and re-supply it yourself.
That's almost always a CORS rejection or a plain network failure (wrong URL, offline, mixed-content HTTPS-to-HTTP block). Browsers intentionally withhold the specific cause from JavaScript, so check the browser console's network tab for the real reason.
The behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.
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