For API providers

What stunt is

stunt is an open-source tool that lets developers run local simulators of public APIs — including, in some cases, yours. It exists so teams can test their integrations offline, with no remote accounts, no network calls, and no per-call bills, against synthetic (fake) data. Nothing about your real service is ever touched.

How a developer uses it

A developer stands up a local simulation with a single command and points their test suite at localhost instead of the live API:

That's it. The simulator returns canned, synthetic responses. Developers use it to run their test suite safely and repeatably — the same job your own sandbox or test mode does, just local and free.

How we reference your brand

We refer to APIs by name so developers can find the simulator they need, and we go out of our way to keep that unambiguous:

• Adapters use a -style suffix (e.g. stripe-style, not Stripe).
• Every adapter is marked as unofficial and unaffiliated in its own DISCLAIMER.
• Your name and marks belong to you; we use them only to identify which API a simulator stands in for.

More in our trademark notes.

Built in good faith

We built stunt to help developers — not to impersonate or to freeload on your work. If you have feedback on an adapter's accuracy, on how we reference your brand, or anything else, we'd genuinely like to hear it. The fastest way is to open a discussion on GitHub.