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Introduction Repository custom instructions let you provide Copilot with repository-specific guidance and preferences on GitHub. To find out how to set up custom instructions in an IDE, see Adding repository custom instructions for GitHub Copilot in your IDE. For more information about custom instructions, see About customizing GitHub Copilot responses. Prerequisites for repository custom instruct
GitHub Copilot supports multiple AI models, each with different strengths. Some prioritize speed and cost-efficiency, while others are optimized for accuracy, reasoning, or multimodal inputs. The right model depends on your task. For a side-by-side comparison to help you choose, see AI model comparison. The models available to you depend on your Copilot plan and where you're using Copilot, such as
About custom instructions for GitHub Copilot GitHub Copilot can provide chat responses that are tailored to the way your team works, the tools you use, or the specifics of your project, if you provide it with enough context to do so. Instead of repeatedly adding this contextual detail to your chat questions, you can create a file that automatically adds this information for you. The additional inf
You can create actions to perform tasks in your repository. If you're making a custom action, it will require a metadata file that uses YAML syntax. Note You can build Docker container, JavaScript, and composite actions. Actions require a metadata file to define the inputs, outputs, and runs configuration for your action. Action metadata files use YAML syntax, and the metadata filename must be eit
Introduction This guide describes how to use Copilot Chat and agents to automate coding tasks by breaking them into steps, using tools to read files, edit code, and run commands, and self-correcting when something goes wrong. You can also ask general questions about software development, or specific questions about the code in your project. For more information, see About GitHub Copilot Chat. To l
About secret scanning patterns There are three types of secret scanning alerts: User alerts: Reported to users in the Security and quality tab of the repository, when a supported secret is detected in the repository. Push protection alerts: Reported to users in the Security and quality tab of the repository, when a contributor bypasses push protection. Partner alerts: Reported directly to secret p
Rulesets help you to control how people can interact with branches and tags in a repository. Anyone with read access to a repository can view the repository's rulesets. People with admin access to a repository, or a custom role with the "edit repository rules" permission, can create, edit, and delete rulesets for a repository. Rulesets are available in public repositories with GitHub Free and GitH
You can add sub-issues to an issue to break down larger pieces of work into tasks. Your sub-issues show their relationship to the parent issue allowing you to track your work across GitHub. Parent issues and sub-issue progress is also available in your projects, allowing you to build views, filter, and group by parent issue. Your sub-issues can themselves contain sub-issues, allowing you to create
GitHub Copilot is available in supported IDEs: Visual Studio Code, Visual Studio, JetBrains IDEs, Eclipse, and XCode. It can answer questions and explain concepts, and suggest or complete code as you work. In IDEs that support agent mode, it can also propose edits and validate files. This quickstart shows you how to use these capabilities. It takes about ten minutes. Prerequisites An active Copilo
Dependency review is available for the following repository types: Public repositories on GitHub.com Organization-owned repositories on GitHub Team with GitHub Code Security enabled About dependency review Dependency review helps you understand dependency changes and the security impact of these changes at every pull request. It provides an easily understandable visualization of dependency changes
Explore file content and trace changes over time to understand a new codebase and its evolution. GitHub provides tools to view raw content, trace changes to specific lines, and explore how a file’s content has evolved over time. These insights reveal how code was developed, its current purpose, and its structure, helping you contribute effectively. Viewing or copying the raw file content With the
About GitHub App permissions GitHub Apps are created with a set of permissions. Permissions define what resources the GitHub App can access via the API. For more information, see Choosing permissions for a GitHub App. To help you choose the correct permissions, you will receive the X-Accepted-GitHub-Permissions header in the REST API response. The header will tell you what permissions are required
OpenID Connect allows your workflows to exchange short-lived tokens directly from your cloud provider. Overview of OpenID Connect (OIDC) GitHub Actions workflows are often designed to access a cloud provider (such as AWS, Azure, GCP, HashiCorp Vault, and others) in order to deploy software or use the cloud's services. Before the workflow can access these resources, it will supply credentials, such
About automatically generated release notes Automatically generated release notes provide an automated alternative to manually writing release notes for your GitHub releases. With automatically generated release notes, you can quickly generate an overview of the contents of a release. Automatically generated release notes include a list of merged pull requests, a list of contributors to the releas
What are Enterprise Managed Users in GitHub? With Enterprise Managed Users, you manage the lifecycle and authentication of your users on GitHub.com or GHE.com from an external identity management system, or IdP: Your IdP provisions new user accounts on GitHub, with access to your enterprise. Users must authenticate on your IdP to access your enterprise's resources on GitHub. You control usernames,
Learn how to avoid duplication when creating a workflow by reusing existing workflows. Creating a reusable workflow Reusable workflows are YAML-formatted files, very similar to any other workflow file. As with other workflow files, you locate reusable workflows in the .github/workflows directory of a repository. Subdirectories of the workflows directory are not supported. For a workflow to be reus
In this tutorial, you'll learn how to build a composite action. Introduction In this guide, you'll learn about the basic components needed to create and use a packaged composite action. To focus this guide on the components needed to package the action, the functionality of the action's code is minimal. The action prints "Hello World" and then "Goodbye", or if you provide a custom name, it prints
Note This article explains how to automate Dependabot-related tasks using GitHub Actions. For more information about running Dependabot updates using GitHub Actions, see Dependabot on GitHub Actions runners instead. You can use GitHub Actions to perform automated tasks when Dependabot creates pull requests to update dependencies. You may find this useful if you want to: Ensure that Dependabot pull
Security practices for writing workflows and using GitHub Actions features. Find information about security best practices when you are writing workflows and using GitHub Actions security features. Writing workflows Use secrets for sensitive information Because there are multiple ways a secret value can be transformed, automatic redaction is not guaranteed. Adhere to the following best practices t
You can personalize GitHub Codespaces by using a dotfiles repository on GitHub or by using Settings Sync. About personalizing Codespaces When using any development environment, customizing the settings and tools to your preferences and workflows is an important step. GitHub Codespaces allows for two main ways of personalizing your codespaces. Settings Sync - You can synchronize your Visual Studio
Note Your profile name for your GitHub account is required. All other profile information described in this article is optional. Changing your profile picture Your profile picture helps identify you across GitHub in pull requests, comments, contributions pages, and graphs. Setting a profile picture In the upper-right corner of any page on GitHub, click your profile picture, then click Settings. Un
About repository templates You can create a template from an existing repository. Anyone with access to the template repository can create a new repository based on the template with the same directory structure, branches, and files. For more information about creation of a repository template, see Creating a template repository. Tip You can also create a repository from a template using the GitHu
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