Disclaimer / simulated, not certified
01 Read before you ship
ApiSimul is a development aid, not a guarantee of anything.
Fake data, on purpose
All mocked responses are simulated data generated in your browser. Names, emails, UUIDs, and avatars are randomly fabricated and may coincidentally resemble real people or entities. Nothing returned by the switchboard should be treated as factual information.
Mocks diverge from reality
A mock represents your assumption about an API, not the API itself. Real endpoints differ in headers, edge cases, error shapes, and timing. Always verify integration behavior against the actual service before releasing software that was developed against mocks.
Same-origin limits
Service Workers intercept only same-origin requests, per browser security rules. The operator on apisimul.com answers requests from apisimul.com pages; it cannot and does not observe traffic on other websites. Mocking your own project requires running it under an origin where the worker is registered.
Browser differences
Service Worker lifecycles, IndexedDB behavior, and update timing vary across browsers and private-browsing modes. What registers instantly in one browser may need a reload in another. Treat unexpected behavior as a browser quirk first, and check our contact page for reporting it.
Your board, your backup
Rules live in browser storage that survives reloads but not cleared site data. The switchboard makes no promise of durability — export your rule board if losing it would hurt.
No liability
We accept no liability for any loss or damage arising from software developed, tested, or demonstrated with this tool. Use ApiSimul to speed up your work; use your own verification before trusting the results.