API Request Builder
Build an HTTP request with query parameters, headers, auth and a body. Send it from your browser to see the response, or copy it as cURL, JavaScript fetch or raw HTTP.
Response
Questions
Why does sending fail when cURL works?
Browsers enforce CORS. The API must return an Access-Control-Allow-Origin header that allows this site, or the browser blocks the response. Server-side tools like cURL don't have this limit, so copy the cURL command for APIs without CORS.
Is my request sent through your server?
No. Your browser sends the request straight to the API. Tokens and passwords never pass through DevToolWorld.
Why are some response headers missing?
Browsers only show scripts a few safe headers, plus any the server lists in Access-Control-Expose-Headers. The full set is visible in your browser's developer tools under Network.