Verify the job: Post a message
Run the job against Slack Web API with your own account, on your own GitHub Actions runner, and the report card shows it verified. Sourcey never holds your credentials, and a run never changes the grade.
This listing has no binding yet
A binding says exactly how an agent does this job on Slack Web API: the calls it makes, the credentials they carry and what proves the job worked. Add one to the listing in agent-ready-services, and this page shows the workflow to run.