# Trusted testers

Some of the solvers under the OR API are restricted to trusted testers. A
trusted tester is given access to an API for a solver under development in
exchange for providing feedback.

## Workforce Scheduling Solver

The trusted tester program for the [workforce scheduling API](https://developers.google.com/optimization/service/scheduling/workforce_scheduling) is closed to
new participants. If you are an allow-listed trusted tester, the service will
remain in operation as a limited free tier service, while we figure out the
future of this service.