Loading tool…
How to Create a Mock API Endpoint
The Mock API Generator stores a JSON payload on our servers and gives you a public HTTPS URL that returns it — with the HTTP status, methods, delay, and headers you choose. Ideal for front-end prototypes and integration tests.
- Paste or write your JSON response body and choose which HTTP methods (GET, POST, etc.) should be accepted.
- Optionally set status code, artificial delay, and custom response headers under Advanced options.
- Click Generate Endpoint, then call the URL from curl, fetch, axios, or your app. Watch the hit counter update as requests arrive.
What Is a Mock API?
A mock API is a stand-in HTTP endpoint that returns canned data instead of a real backend. Developers use mocks to unblock UI work, test error paths (4xx/5xx), simulate latency, and demo APIs before the server exists. Unlike static JSON files, a mock URL behaves like a real route: status codes, CORS, and method checks match production more closely.
Why Use Our Mock API Generator?
- Live URL in seconds — no deploy or account required.
- Realistic behaviour — status codes, method allowlist, delay, and custom headers.
- CORS enabled — call the endpoint from browser-based apps during local development.
- Hit counter and expiry — see usage at a glance; bins auto-expire after 24 hours.
Frequently Asked Questions
Is the mock URL private?
Anyone who knows the URL can request it and receive your JSON. Treat it like a public paste: do not store API keys, passwords, or personal data.
How long does an endpoint last?
Mock bins expire 24 hours after creation. Expired endpoints return gone/expired responses and are removed by automated cleanup.
What is the payload size limit?
JSON bodies are limited to 512 KB so the service stays fast and fair for everyone.
Can I simulate slow APIs?
Yes. Set response delay from 0 to 10 seconds in Advanced options before generating the endpoint.