Installing and Using Plugins

Plugins are installable packages that extend GitHub Copilot CLI with reusable agents, skills, hooks, and servers, all bundled into a single unit you can install with one command. Instead of manually copying agent files and configuring MCP servers across every project, plugins let you install a curated set of capabilities and share them with your team.

This article explains what plugins contain, how to find and install them, and how to manage your plugin library.

What’s Inside a Plugin?

A plugin bundles one or more of the following components:

Component	What It Does	File Location
Custom Agents	Specialized AI assistants with tailored expertise	agents/*.agent.md
Skills	Discrete callable capabilities with bundled resources	skills/*/SKILL.md
Hooks	Event handlers that intercept agent behavior	hooks.json or hooks/
MCP Servers	Model Context Protocol integrations for external tools	.mcp.json or .github/mcp.json
LSP Servers	Language Server Protocol integrations	lsp.json or .github/lsp.json

A plugin might include all of these or just one — for example, a plugin could provide a single specialized agent, or an entire development toolkit with multiple agents, skills, hooks, and MCP server configurations working together.

Example: What a Plugin Looks Like

Here’s the structure of a typical plugin:

my-plugin/
├── .github/
│   └── plugin/
│       └── plugin.json        # Plugin manifest (name, description, version)
├── agents/
│   ├── api-architect.agent.md
│   └── test-specialist.agent.md
├── skills/
│   └── database-migrations/
│       ├── SKILL.md
│       └── scripts/migrate.sh
├── hooks.json
└── README.md

The plugin.json manifest declares what the plugin contains:

{
  "name": "my-plugin",
  "description": "API development toolkit with specialized agents and migration skills",
  "version": "1.0.0",
  "agents": [
    "./agents/api-architect.md",
    "./agents/test-specialist.md"
  ],
  "skills": [
    "./skills/database-migrations/"
  ]
}

Why Use Plugins?

You might wonder: why not just copy agent files into your project manually? Plugins provide several advantages:

Feature	Manual Configuration	Plugin
Scope	Single repository	Any project
Sharing	Manual copy/paste	copilot plugin install command
Versioning	Git history	Marketplace versions
Discovery	Searching repositories	Marketplace browsing
Updates	Manual tracking	copilot plugin update

Plugins are especially valuable when you want to:

• Standardize across a team — Everyone installs the same plugin for consistent tooling
• Share domain expertise — Package a Rails expert, Kubernetes specialist, or security reviewer as an installable unit
• Encapsulate complex setups — Bundle MCP server configurations that would otherwise require manual setup
• Reuse across projects — Install the same capabilities in every project without duplicating files

Finding Plugins

Plugins are collected in marketplaces — registries you can browse and install from. Both Copilot CLI and VS Code come with two marketplaces registered by default — no setup required:

• copilot-plugins — Official GitHub Copilot plugins
• kihub — Community-contributed plugins from this repository

Browsing in Copilot CLI

List your registered marketplaces:

copilot plugin marketplace list

Browse plugins in a specific marketplace:

copilot plugin marketplace browse kihub

Or from within an interactive Copilot session:

/plugin marketplace browse kihub

Tip: You can also browse plugins on this site’s Plugins Directory to see descriptions, included agents, and skills before installing.

Browsing in VS Code

Because kihub is a default marketplace in VS Code, you can discover plugins without any configuration:

• Open the Extensions search view and type @agentPlugins to see all available plugins
• Or open the Command Palette (Ctrl+Shift+P / Cmd+Shift+P) and run Chat: Plugins

Adding More Marketplaces

Register additional marketplaces from GitHub repositories:

copilot plugin marketplace add anthropics/claude-code

Or from a local path:

copilot plugin marketplace add /path/to/local-marketplace

Installing Plugins

From Copilot CLI

Reference a plugin by name and marketplace:

copilot plugin install database-data-management@kihub

Or from an interactive session:

/plugin install database-data-management@kihub

From VS Code

Browse to the plugin via @agentPlugins in the Extensions search view or via Chat: Plugins in the Command Palette, then click Install.

Managing Plugins

Once installed, plugins are managed with a few simple commands:

# List all installed plugins
copilot plugin list

# Update a plugin to the latest version
copilot plugin update my-plugin

# Remove a plugin
copilot plugin uninstall my-plugin

Where Plugins Are Stored

• Marketplace plugins: ~/.copilot/installed-plugins/MARKETPLACE/PLUGIN-NAME/
• Direct installs: ~/.copilot/installed-plugins/_direct/PLUGIN-NAME/

How Plugins Work at Runtime

When you install a plugin, its components become available to Copilot CLI automatically:

• Agents appear in your agent selection (use with /agent or the agents dropdown)
• Skills are loaded automatically when relevant to your current task
• Hooks run at the configured lifecycle events during agent sessions
• MCP servers extend the tools available to agents

You don’t need to do any additional configuration after installing — the plugin’s components integrate seamlessly into your workflow.

Plugins from This Repository

This repository (kihub) serves as both a collection of individual resources and a plugin marketplace. You can use it in two ways:

Install Individual Plugins

Browse the Plugins Directory and install specific plugins:

copilot plugin install context-engineering@kihub
copilot plugin install azure-cloud-development@kihub
copilot plugin install frontend-web-dev@kihub

Each plugin bundles related agents and skills around a specific theme or technology.

Use Individual Resources Without Plugins

If you only need a single agent or skill (rather than a full plugin), you can still copy individual files from this repo directly into your project:

• Copy an .agent.md file into .github/agents/
• Copy a skill folder into .github/skills/
• Copy a hook configuration into .github/hooks/

See Using the Copilot Coding Agent for details on this approach.

Best Practices

• Start with a marketplace plugin before building your own — there may already be one that fits your needs
• Keep plugins focused — a plugin for “Rails development” is better than a plugin for “everything”
• Check for updates regularly — run copilot plugin update to get the latest improvements
• Review what you install — plugins run code on your machine, so inspect unfamiliar plugins before installing
• Use plugins for team standards — publish an internal plugin to ensure every team member has the same agents, skills, and hooks
• Remove unused plugins — declutter with copilot plugin uninstall to keep your environment clean

Common Questions

Q: Do plugins work with the coding agent on GitHub.com?

A: Plugins are specific to GitHub Copilot CLI and the VS Code extension (currently Insiders). For the coding agent on GitHub.com, add agents, skills, and hooks directly to your repository (via a plugin if you prefer!). See Using the Copilot Coding Agent for details.

Q: Can I use plugins and repository-level configuration together?

A: Yes. Plugin components are merged with your repository’s local agents, skills, and hooks. Local configuration takes precedence if there are conflicts.

Q: How do I create my own plugin?

A: Create a directory with a plugin.json manifest and your agents/skills/hooks. See the GitHub docs on creating plugins for a step-by-step guide.

Q: Can I share plugins within my organization?

A: Yes. You can create a private plugin marketplace in an internal GitHub repository, then have team members register it with copilot plugin marketplace add org/internal-plugins.

Q: What happens if I uninstall a plugin?

A: The plugin’s agents, skills, and hooks are removed from Copilot. Any work already done with those tools is unaffected — only future sessions lose access.

Next Steps

• Browse Plugins: Explore the Plugins Directory for installable plugin packages
• Create Skills: Creating Effective Skills — Build skills that can be included in plugins
• Build Agents: Building Custom Agents — Create agents to package in plugins
• Add Hooks: Automating with Hooks — Configure hooks for plugin automation

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