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Claude Code’s plugin system allows extending its capabilities with additional commands, tools, and integrations — both through built-in plugins and third-party ones.

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What plugins provide

Plugins can add:
  • New slash commands
  • Additional tools for Claude to invoke
  • UI components and panels
  • Integrations with external services

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Managing plugins

> /plugin
The /plugin command opens the plugin management UI: 
> /plugin list       — list installed plugins
> /plugin install    — install a new plugin
> /plugin remove     — remove a plugin
> /reload-plugins    — reload all plugins without restarting

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Built-in plugins

Claude Code ships with bundled plugins in src/plugins/bundled/. These are loaded via builtinPlugins.ts and provide core functionality like:
  • Official MCP server integrations
  • Platform-specific features (macOS, Windows, Linux)
  • Feature-flagged experimental capabilities

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Installing plugins

Plugins are loaded from ~/.claude/plugins/. To install a third-party plugin: 
> /plugin install <plugin-name-or-path>
Plugins can be:
  • npm packages (@scope/claude-code-plugin-name)
  • Local directories with a plugin manifest
  • URLs pointing to plugin packages

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Reloading plugins

After adding or modifying a plugin, reload without restarting: 
> /reload-plugins

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Plugin loader

The plugin loader (src/services/plugins/) handles:
  • Discovering plugins from ~/.claude/plugins/
  • Loading plugin manifests
  • Registering plugin-provided tools and commands
  • Sandboxing plugin execution
Plugins run with the same permissions as Claude Code itself. Only install plugins from sources you trust.

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