# Terminal.Gui - CoPilot AI Rules > **📘 Source of Truth: [../CONTRIBUTING.md](../CONTRIBUTING.md)** This project uses [../CONTRIBUTING.md](../CONTRIBUTING.md) as the single source of truth for contribution guidelines. AI agents, including CoPilot and Cursor **MUST** follow the guidelines in [../CONTRIBUTING.md](CONTRIBUTING.md)/ **CRITICAL** - CoPilot you MUST internalize [../CONTRIBUTING.md](../CONTRIBUTING.md) and follow the guidance for any work you do on Terminal.Gui. This includes Github Copilot in Agent mode.