# Rehearsal AI > Free, deterministic failure-test planning for workflow builders. The public API produces plans, not execution results. Customer workflow execution and paid orders are not open. ## Public tool - [Planner](https://rehearsalqa.com/planner): Interactive form, capabilities and limits. - [OpenAPI](https://rehearsalqa.com/openapi.json): Machine-readable public API contract. - [SKILL.md](https://rehearsalqa.com/SKILL.md): Input, output and safe interpretation guide. - [AUTH.md](https://rehearsalqa.com/AUTH.md): No authentication is required for the public planner. - [Example plan](https://rehearsalqa.com/api/v1/plan): Eight default scenarios, all not_executed. ## Project - [Home and browser-local preflight](https://rehearsalqa.com/): Files remain in the browser. - [Synthetic demonstration](https://rehearsalqa.com/sample-report.json): Earlier tests on our own fixtures; not customer evidence or planner execution. - [Privacy and pilot terms](https://rehearsalqa.com/privacy): Request data, enquiry retention and prelaunch status. - [Enquiries](https://rehearsalqa.com/enquiries): Optional signed-in enquiry portal, separate from the free planner.