Sample cURL Equivalent
curl -X POST "https://api.example.com/items" \
-H "Content-Type: application/json" \
-H "Authorization: Bearer <token>" \
-d '{ "name":"demo","qty":1 }'
Loading…
Status: {{ responseStatus }}
{{ formattedBody }}
Online API Testing Tool empowers you to craft, send, and inspect HTTP requests directly in your browser, eliminating the need for command-line utilities or heavyweight clients. By providing an intuitive form that mirrors cURL syntax, it accelerates debugging and validation of REST, GraphQL, and traditional web services during development, integration, and production monitoring.
Granular method control, parameterised query assembly, dynamic header injection, and built-in authentication workflows simplify complex request scenarios. Real-time prettified JSON viewing, status-line reporting, and header enumeration surface server behaviour instantly, while local storage bookmarking secures frequently used endpoints for later recall. Every interaction stays client-side, preserving confidentiality for sensitive payloads in enterprise or public-facing contexts.
Optimised for responsive Bootstrap layouts, the utility runs smoothly across desktops, tablets, and mobile devices, offering consistent ergonomics to backend engineers, frontend integrators, testers, and site-reliability teams. Categorised under developer, HTTP, and testing tools, it integrates seamlessly into continuous delivery pipelines, code reviews, classroom demonstrations, or ad-hoc diagnostics, ensuring that network conversations remain transparent, reproducible, and actionable at any stage.
The elements below outline functional characteristics, performance limits, and interoperability notes for precise implementation.
GET, POST, PUT, PATCH, DELETE, HEAD, and OPTIONS.| Method | Typical Action | Idempotent |
|---|---|---|
| GET | Retrieve a resource representation | Yes |
| POST | Create a subordinate resource | No |
| PUT | Replace an existing resource | Yes |
| PATCH | Apply partial modifications | No |
| DELETE | Remove a resource | Yes |
| HEAD | Retrieve headers only | Yes |
| OPTIONS | Discover communication options | Yes |
curl -X POST "https://api.example.com/items" \
-H "Content-Type: application/json" \
-H "Authorization: Bearer <token>" \
-d '{ "name":"demo","qty":1 }'
Follow the ordered workflow below to execute and evaluate an API call efficiently.
HEAD for quick availability checks.The answers below clarify common questions regarding usage, storage, and security.
All data resides exclusively in your browser’s local storage; no request metadata or payloads are transmitted to third-party backends beyond the target endpoint.
Browser memory limits apply. Practical payload sizes up to several megabytes are routinely handled, but consider chunking or streaming for larger files.
No; however, modern browsers block mixed-content requests when the tool runs over HTTPS. Serve the tool on http:// if non-TLS endpoints must be tested.
Yes. Saved requests are JSON-serialised; copy from local storage or the developer console for migration, version control, or sharing.
If the server omits permissive Access-Control-Allow-* headers, the browser blocks the call. Verify server-side CORS configuration or use server-side proxying for restricted origins.
Refer to the checklist below when unexpected behaviour arises.
Content-Type; some browsers suppress downloads without it.Leverage the strategies below to streamline repetitive testing and automate quality gates.
${API_HOST}) in URLs, then replace them quickly using the browser’s multi-cursor editing.OPTIONS before mutating verbs to confirm capability exposure and avoid unexpected 405 responses.User-Agent variants, in a snippet manager for rapid insertion.Key terms referenced across the documentation appear below for quick recall.