REST API Mock Builder — Free Online Tool
Build REST API mock endpoint definitions and generate ready-to-use curl and JavaScript fetch snippets. Useful for API design, frontend development with mock backends, and API documentation.
100% client-side. No uploads. Your data never leaves your browser.
How to use REST API Mock Builder
- Define your endpoint method and path.
- Set the status code and response.
- Copy the curl command or fetch snippet.
Frequently Asked Questions
Does this actually host a mock API?
No — this is a code generator. It builds curl and fetch code snippets for your mock endpoint. For actual mock hosting, use tools like Mock Service Worker (MSW) or json-server.
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