APIテスター

A simple API testing tool that allows you to easily verify API operations directly in your browser.
No server or installation required—start using it immediately.

Perfect for validating APIs under development, confirming endpoint behavior, and debugging requests.

✨ Main Features
・HTTP Request Sending
　Supports GET / POST / PUT / DELETE
　Enter a URL and send requests with a single click
　Simple implementation using the browser's fetch API
・Tab-based Input UI
　Intuitive operation with a UI organized by use case.

・Authentication Features
Supports multiple authentication methods.
　Bearer Token (Authorization header automatically added)
　Basic Authentication (Base64 encoding)
　API Key (configurable with any header name)

・Response Display
Confirm request results in real-time.
　Status code display
　Response time (ms)
　Full response body display

・History Feature
Automatically saves past requests for reuse.
　Saves up to 10 items in localStorage
　Restore contents with a single click
　Convenient for repeated testing

・cURL Copy
Copy the current request in cURL format.
　Easy reproduction in CLI environments
　Convenient for integration with other tools

⚠️ Notes
Due to CORS restrictions, some APIs may not be directly accessible
Please be careful with sensitive information for security reasons (it is saved in localStorage)