# Reference for GitHub Copilot

Find information to apply to your work with GitHub Copilot.

## Links

* [GitHub Copilot Chat cheat sheet](/en/copilot/reference/chat-cheat-sheet)

  Use this cheat sheet to quickly reference the most common commands and options for using GitHub Copilot Chat.

* [Copilot customization cheat sheet](/en/copilot/reference/customization-cheat-sheet)

  Compare the different customization options for GitHub Copilot.

* [AI models for GitHub Copilot](/en/copilot/reference/ai-models)

  Find information about large language models you can use to power GitHub Copilot.

* [Copilot feature matrix](/en/copilot/reference/copilot-feature-matrix)

  Identify which IDEs support which GitHub Copilot features.

* [Keyboard shortcuts for GitHub Copilot in the IDE](/en/copilot/reference/keyboard-shortcuts)

  Find a list of keyboard shortcuts for GitHub Copilot in the IDEs that support it.

* [Copilot CLI reference](/en/copilot/reference/copilot-cli-reference)

  Find information on options and settings for Copilot CLI.

* [GitHub Copilot app reference](/en/copilot/reference/github-copilot-app-reference)

  Find reference information for repository configuration, slash commands, and GitHub-provided built-in skills in the GitHub Copilot app.

* [Custom agents configuration](/en/copilot/reference/custom-agents-configuration)

  Reference for configuring custom agents.

* [Support for different types of custom instructions](/en/copilot/reference/custom-instructions-support)

  Find out which environments support which types of custom instructions.

* [GitHub Copilot hooks reference](/en/copilot/reference/hooks-reference)

  Find hook events, configuration formats, and input payloads for hooks in Copilot CLI and Copilot cloud agent.

* [Supported surfaces for GitHub Copilot policies](/en/copilot/reference/supported-surfaces-for-policies)

  Which policies affect which Copilot features and surfaces?

* [Copilot allowlist reference](/en/copilot/reference/copilot-allowlist-reference)

  Learn how to allow certain traffic through your firewall or proxy server for Copilot to work as intended in your organization.

* [Metrics data properties for GitHub Copilot](/en/copilot/reference/metrics-data)

  See how GitHub calculates properties from APIs and reports.

* [GitHub Copilot billing](/en/copilot/reference/copilot-billing)

  Find billing information about GitHub Copilot.

* [Files excluded from GitHub Copilot code review](/en/copilot/reference/review-excluded-files)

  Understand the types of files that are excluded from a review by Copilot.

* [GitHub Copilot usage metrics](/en/copilot/reference/copilot-usage-metrics)

  Find information about usage metrics for GitHub Copilot.

* [Enterprise administrators](/en/copilot/reference/enterprise-administrators)

  Find information to apply to your work as an enterprise administrator for GitHub Copilot.