API Response Mocker

Online

Create mock API endpoints in seconds. Define the URL, method, status code and JSON response — the tool serves live mock responses you can test from any frontend.

Name
Endpoint
Status
200 OK
Delay (ms)
Response Headers
Response Body
Request
Response
Send a request to see the response here.
Ready — mocks are stored in your browser

Frequently Asked Questions

What is API mocking?

API mocking simulates a real API endpoint by returning predefined responses. It lets frontend developers build and test UI without waiting for a backend to be ready.

Do I need an account?

No account or signup required. Your mock endpoints are created instantly and available immediately.

Can I set custom status codes?

Yes. You can set any HTTP status code (200, 201, 400, 404, 500 etc.) and custom response headers.

How long do mock endpoints last?

Mock endpoints are temporary and session-based. They are cleared when you close the browser tab.