This service implements the built-in/succeed and built-in/fail workerTypes, which simply succeed or fail immediately.
No special configuration is required for development.
Run yarn workspace taskcluster-built-in-workers test to run the tess.
Some of the tests will be skipped without additional credentials, but it is fine to make a pull request as long as no tests fail.
To run all tests, you will need appropriate Taskcluster credentials.
Using taskcluster-cli, run eval $(taskcluster signin --scope assume:project:taskcluster:tests:taskcluster-built-in-workers), then run the tests again.
This service simply interfaces with the queue service as a worker. There is no API.
Since it does not perform any actual work, a single instance can easily keep up with any conceivable load, although deploying multiple instances is also possible.