# Customization library

Discover a curated collection of customizations, including custom instructions, custom agents, and prompt files, to enhance your GitHub Copilot experience.

## Spotlight

* [Your first custom instructions](/en/copilot/tutorials/customization-library/custom-instructions/your-first-custom-instructions)

  Create and test your first custom instruction with this simple example. (Image: /assets/images/copilot-landing/generating\_unit\_tests.png)

* [Your first prompt file](/en/copilot/tutorials/customization-library/prompt-files/your-first-prompt-file)

  Create your first Copilot prompt file with this simple code explanation example that works for any programming language. (Image: /assets/images/copilot-landing/improving\_code\_readability.png)

* [/custom-instructions/your-first-custom-agent](/en/custom-instructions/your-first-custom-agent)

  Image: /assets/images/copilot-landing/generating\_unit\_tests.png

## Links

* [Your first custom instructions](/en/copilot/tutorials/customization-library/custom-instructions/your-first-custom-instructions)

  Create and test your first custom instruction with this simple example.

* [Concept explainer](/en/copilot/tutorials/customization-library/custom-instructions/concept-explainer)

  Instructions for breaking down complex technical concepts.

* [Debugging tutor](/en/copilot/tutorials/customization-library/custom-instructions/debugging-tutor)

  Instructions for systematic debugging and troubleshooting.

* [Code reviewer](/en/copilot/tutorials/customization-library/custom-instructions/code-reviewer)

  Instructions for thorough and constructive code reviews.

* [GitHub Actions helper](/en/copilot/tutorials/customization-library/custom-instructions/github-actions-helper)

  Generate and improve GitHub Actions workflows.

* [Pull request assistant](/en/copilot/tutorials/customization-library/custom-instructions/pull-request-assistant)

  Generate comprehensive pull request descriptions and reviews.

* [Issue manager](/en/copilot/tutorials/customization-library/custom-instructions/issue-manager)

  Create well-structured issues and responses.

* [Accessibility auditor](/en/copilot/tutorials/customization-library/custom-instructions/accessibility-auditor)

  Instructions for comprehensive web accessibility testing and compliance.

* [Testing automation](/en/copilot/tutorials/customization-library/custom-instructions/testing-automation)

  File-specific instructions for writing unit tests.

* [Your first prompt file](/en/copilot/tutorials/customization-library/prompt-files/your-first-prompt-file)

  Create your first Copilot prompt file with this simple code explanation example that works for any programming language.

* [Create README](/en/copilot/tutorials/customization-library/prompt-files/create-readme)

  Generate comprehensive README files for your projects.

* [Onboarding plan](/en/copilot/tutorials/customization-library/prompt-files/onboarding-plan)

  A prompt file for getting personalized help with team onboarding.

* [Document API](/en/copilot/tutorials/customization-library/prompt-files/document-api)

  Generate comprehensive API documentation from your code.

* [Review code](/en/copilot/tutorials/customization-library/prompt-files/review-code)

  Perform comprehensive code reviews with structured feedback.

* [Generate unit tests](/en/copilot/tutorials/customization-library/prompt-files/generate-unit-tests)

  Create focused unit tests for your code.

* [Your first custom agent](/en/copilot/tutorials/customization-library/custom-agents/your-first-custom-agent)

  Create and test your first custom agent with this simple README specialist example.

* [Implementation planner](/en/copilot/tutorials/customization-library/custom-agents/implementation-planner)

  A custom agent that breaks down features into actionable tasks and creates detailed implementation plans.

* [Bug fix teammate](/en/copilot/tutorials/customization-library/custom-agents/bug-fix-teammate)

  A custom agent that identifies critical bugs in your project and implements targeted fixes.

* [Cleanup specialist](/en/copilot/tutorials/customization-library/custom-agents/cleanup-specialist)

  A custom agent that cleans up messy code, removes duplication, and improves maintainability across code and documentation files.