Where to find it
Start at https://github.com/features/copilot. GitHub documents a desktop Copilot app, and Copilot is also available in supported developer environments..
Desktop app and setup
You need a GitHub account and either Copilot access or a configured model provider. GitHub's desktop-app guide also requires Git for local project work.
Your first useful workflow
- Install and sign in to the GitHub Copilot app, then connect one local folder or repository.
- Ask for a small, low-risk change and require an explanation of the planned files and checks.
- Use an interactive agent session so you can answer questions as it works.
- Review the diff, run the relevant checks, and create a pull request only when you understand the change.
What to watch for
Connecting a repository grants the tool context about that codebase. Review organisation policy, model-provider credentials, and the generated diff before you accept or publish a change.
Go deeper with Troiana
Use the platform-specific techniques, prompt patterns, and verification habits in the Troiana AI Hub once you have completed the initial setup.