API Preflight
Mock the API before the backend exists.
Define endpoints and the exact responses you want — 200, 404, 500, custom bodies, delays, whole sequences — and get a live URL your mobile or web app can call today. Build and test the frontend against every response the real backend can't hand you on demand.
Create an instant mock →No account needed.
Milestone 1 — the mock engine is live.
Define an endpoint + response and get a working URL with no login. Endpoints are served from apipreflight.io. Next: accounts & persistence (Milestone 2).
- Free, no account — one endpoint, instant URL, expires in ~7 days.
- Free account — save & organize your mocks.
- Pro — scenarios, dynamic data, request logs, custom domains.
- Teams — shared workspaces & roles.