API Tester
Test REST APIs directly from your browser without CORS issues. Share requests with a single link.
Ready to Test
Enter a URL and click Send to see the response here.
Privacy & Trust First
"When you test an API endpoint here, we route the request through our secure cloud proxy. This bypasses the common 'CORS' (Cross-Origin Resource Sharing) errors that usually block browser-based API tools, allowing you to test any public or local API effortlessly."
Before You Start
Test your REST APIs directly from the browser with Axonix. Debug GET, POST, PUT, and DELETE requests, inspect headers, and share reproducible API calls with your team instantly.
- 1Select your HTTP method (GET, POST, PUT, DELETE, etc.).
- 2Enter the full URL of the API endpoint you want to test.
- 3Add any necessary Headers (e.g., Authorization tokens or Content-Type).
- 4For POST/PUT requests, enter your JSON body payload in the Body tab.
- 5Click 'Send' to execute the request and view the status, time, and response data.
- CORS Bypass: Our built-in proxy handles cross-origin requests automatically.
- Shareable Links: Encode your entire request configuration into a single URL.
- Response Analysis: View status codes, response time, and payload size.
- JSON Beautifier: Automatically format messy JSON response bodies for readability.
- History Tracking: (Coming Soon) Access your recent API calls.
Expert Use Cases
Debugging Webhooks
Simulate a webhook payload (POST request) to your local server or production endpoint to verify your listeners are working correctly.
Sharing Reproductions
Found a bug in your team's API? Configure the failing request and copy the 'Share' link to send a precise reproduction case to your backend developers.
Inspecting Headers
Check exactly what headers, cookies, and content-types your server is returning to debug authentication or caching issues.
Quick Prototyping
Test public APIs (like weather, crypto, or social media) to understand their JSON structure before writing a single line of code.
Practical Guidance
When to use this: Use REST API Tester & Debugger when you need quick, trustworthy checks for tokens, hashes, credentials, or security-related text without adding extra tooling.
Example workflow:
- Open REST API Tester & Debugger and paste or upload your source input.
- Apply the key option settings for your specific use case.
- Review output quality and run a quick sanity check.
- Download or copy the final result.
Common mistakes:
- Pasting malformed input and assuming the output is complete without checking validation errors.
- Using test data that does not match the real-world format or file type you plan to process.
- Skipping a final review step before using the output in production or client-facing work.
Privacy note: Inputs are processed with a privacy-first approach. Review each tool page for any feature-specific network behavior.
- Requests run through a proxy path, so never send production secrets unless your team has explicitly approved that workflow.
- API behavior can differ across environments; validate endpoint base URLs and auth scopes before debugging logic.
- Share links may include headers/body data, so sanitize tokens and sensitive payload fields before sharing.
- 1Set correct method, URL, headers, and auth before sending the request.
- 2Inspect status code, response body, and timing for expected behavior.
- 3If sharing with teammates, remove secrets and reproduce with a sanitized request link.
Frequently Asked Questions
Learn More
Need practical guides, walkthroughs, and troubleshooting tips? Explore the Axonix blog for detailed tutorials.