claude-marketplace-installer

A CLI tool that reads your project's .claude/settings.json and installs all Claude Code plugin marketplaces listed there.

Why?

Claude Code supports plugin marketplaces — sources that distribute skills, slash commands, hooks, and other Claude Code extensions. This tool lets teams version-control which marketplaces a project uses by declaring them in .claude/settings.json, then running a single install command to set them all up.

This is useful when you want to:

• Keep skills, slash commands, and hooks in a shared repo and distribute them as a marketplace
• Ensure everyone on a team is running the same Claude Code plugins
• Onboard new contributors by running one command instead of manually adding each marketplace

Installation

pip install claude-marketplace-installer

Or with uv:

uv tool install claude-marketplace-installer

Usage

Add your marketplaces to .claude/settings.json in your project:

{
  "extraKnownMarketplaces": {
    "my-team-plugins": {
      "source": {
        "source": "github",
        "repo": "my-org/claude-plugins"
      }
    }
  }
}

Then, from the project root, run:

claude-install-marketplaces

This will install each marketplace listed under extraKnownMarketplaces using claude plugin marketplace add.

Settings format

Each entry under extraKnownMarketplaces must have a source object with:

Requirements

• Python 3.9+
• Claude Code CLI (claude must be available on your PATH)