Claude Plugins

A collection of open-source plugins for Claude Code, Anthropic's CLI for AI-assisted software development.

What are Claude Code plugins?

Claude Code is Anthropic's command-line tool that brings Claude directly into your terminal. Plugins extend Claude Code with additional capabilities — hooks that run on events (like session start), skills that add new /slash commands, and MCP server configurations.

Plugins can:

• Add hooks that trigger on events (e.g., start a dashboard when Claude Code opens)
• Add skills that register new /commands inside Claude Code
• Bundle MCP servers for tool integrations

Plugins

Plugin	Description	Status
mcp-manager	Web dashboard to toggle MCP servers on/off, view tools, and manage configs across workspaces	v1.0.0

Getting Started

Prerequisites

1. Install Claude Code — Follow the official guide to install Claude Code
2. Run Claude Code at least once — This creates the ~/.claude.json config file that plugins depend on
3. Node.js 20+ and npm — Required to build and run plugins

How plugin installation works

Claude Code uses a marketplace system. A marketplace is a GitHub repo (or local path) that contains one or more plugins. To install a plugin, you first register the marketplace, then install plugins from it.

Step 1: Add a marketplace

A marketplace is any repo with a .claude-plugin/marketplace.json at its root. Register it with:

# From a GitHub repo
claude plugin marketplace add github:<owner>/<repo>

# From a local path
claude plugin marketplace add /path/to/marketplace

Step 2: Install a plugin from the marketplace

Once the marketplace is registered, install any plugin listed in it:

claude plugin install <plugin-name>

This clones the plugin, builds it, and registers its hooks and skills with Claude Code automatically.

Step 3: Restart Claude Code

Start a new Claude Code session for the plugin's hooks and skills to take effect.

Manage plugins and marketplaces

# List registered marketplaces
claude plugin marketplace list

# Update marketplace catalogs
claude plugin marketplace update

# List installed plugins
claude plugin list

# Remove a plugin
claude plugin uninstall <plugin-name>

# Remove a marketplace
claude plugin marketplace remove <marketplace-name>

Install a plugin from this repo

To install mcp-manager from this repository:

# 1. Register this repo as a marketplace
claude plugin marketplace add github:sanjibdevnathlabs/claude-plugins

# 2. Install the plugin
claude plugin install mcp-manager

Then start a new Claude Code session — you should see:

MCP Manager dashboard running at http://localhost:4111

See the mcp-manager README for full setup and usage details.

Updating Plugins

Plugin updates are a two-step process — first refresh the marketplace catalog, then update the plugin itself.

Check for updates

# 1. Refresh the marketplace catalog (pulls latest version info)
claude plugin marketplace update

# 2. Open the plugin manager and select a plugin to update
claude plugin manage

Select the plugin you want to update, then choose the update action. This will re-download the latest version and update your local cache.

How versioning works

Each plugin declares a version in the marketplace manifest (.claude-plugin/marketplace.json) and in its own metadata (.claude-plugin/plugin.json). When the marketplace version differs from your installed version, the plugin is considered outdated.

Note: There are currently no automatic update notifications. To stay up to date, periodically run claude plugin marketplace update and check /plugin manage for available updates.

Contributing

Each plugin lives in its own directory at the repo root. See the individual plugin READMEs for development setup:

• mcp-manager development guide

License

MIT