API Tester | Test HTTP Endpoints
Test REST API endpoints directly from your browser. Send requests, inspect responses and headers.
API Request
Note: CORS restrictions may prevent requests to some APIs from the browser.
How to use this tool
- Enter API endpoint URL
- Select HTTP method (GET, POST, PUT, DELETE, PATCH)
- Add headers (Content-Type, Authorization, custom headers)
- Enter request body for POST/PUT (JSON, form data, text)
- Click Send to make request
- View response: status code, headers, body (formatted JSON)
- Note: CORS policies may block some API requests
About API Tester
The API tester sends HTTP requests to any endpoint, letting you test APIs without writing code. Perfect for exploring public APIs, debugging endpoints, testing authentication, or verifying API responses before implementation.
Supports all HTTP methods, custom headers, and various body formats. Response viewer formats JSON automatically and displays status codes and headers for debugging.
Limitation: Browser CORS (Cross-Origin Resource Sharing) policies may block requests to APIs that don't allow browser-based access. APIs must include appropriate CORS headers. For unrestricted testing, use server-side tools (Postman, curl) or browser extensions that bypass CORS.