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."
REST API Tester & Debugger
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.
Blazing fast
No server round-trips. No loading bars. Just instant results.
Locked-down privacy
Your data stays in your browser. Period.
Zero friction
Open the page and go. No accounts, no upsells, no clutter.
Built for people who value their time
The 30-second rundown
Drop it in
Paste text, upload a file, or enter your values.
Tweak if needed
Adjust a setting or two — most defaults just work.
Grab the result
Copy, download, or share. Done in seconds.
How This Works
Below is everything you need to get from zero to done. No fluff, just the steps and features that matter.
- 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.
Real Ways People Use This
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.
Making the Most of It
Good times to reach for this: Reach for REST API Tester & Debugger when you're verifying tokens, checking hashes, or handling anything sensitive. Your data stays on your machine — no risky pasting into random servers.
Typical flow:
- Toss your content into the input — text, file, or whatever you're working with.
- Dial in the settings that match what you actually need.
- Glance over the output to confirm it looks right.
- Grab your result: copy, download, or send it along.
Easy traps to avoid:
- Feeding in sloppy input and assuming the tool will magically sort out every edge case — always eyeball the output first.
- Testing with toy data that looks nothing like your real workload, then getting caught off-guard in production.
- Copy-pasting straight into a live project without a ten-second sanity check. That tiny pause saves hours of cleanup.
Your data stays yours: In most cases, your input never leaves this tab. We don't collect, store, or peek at your data.
- 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.
Questions That Usually Come Up
Dig Deeper
Want walkthroughs, deep-dives, and edge-case tips? The blog has you covered with practical tutorials written by people who actually use these tools.