Mock API Server

Create mock API endpoints and test JSON responses locally in your browser.

How to use

1. Choose an existing endpoint or select “Add endpoint”.
2. Set the request method and path, then configure the status code, delay, response headers and JSON body.
3. Enter a method and path in the Request tester, then select “Send request” to preview the matching response.
4. Export the configuration to share or back it up, and use Import to restore a saved configuration.

Features

• GET, POST, PUT, PATCH and DELETE request methods
• Custom paths, status codes, headers and JSON response bodies
• Configurable response delays and built-in request testing
• Add, duplicate and delete mock endpoints
• Local browser persistence with JSON import and export

Good to know

• This tool is a browser-based API simulator. It does not create a network-accessible server or URL for other applications.
• Use Export before clearing browser data if you want to preserve your endpoint configuration.