gm-cc

The easiest way to install gm-cc is through Claude Code's plugin marketplace:

claude plugin marketplace add AnEntrypoint/gm-cc
claude plugin install -s user gm@gm-cc

This installation method is best for:

• One-time plugin installation across all projects
• Always having the latest version
• Minimal setup and configuration
• Access to marketplace updates

For development or project-specific customization, install gm-cc directly into your project:

cd /path/to/your/project
npm install gm-cc && npx gm install

This installation method is ideal when you need to:

• Customize hooks or agents for your workflow
• Integrate with existing Claude Code projects
• Use the latest development version
• Configure platform-specific behavior per project

The npm install gm-cc && npx gm install command performs two steps:

1. `npm install gm-cc` - Downloads the gm-cc package and stores it in your project's node_modules/ directory
2. `npx gm install` - Runs the gm installer that copies configuration files into your Claude Code plugin directory

Expected output:

$ npm install gm-cc
added 1 package in 1.2s

$ npx gm install
Installing gm-cc...
✓ Created .claude/ directory
✓ Copied agents/gm.md
✓ Copied hooks to .claude/hooks/
✓ Created .mcp.json for MCP integration

After running npx gm install, your project will have:

.claude/
├── agents/
│   └── gm.md                 # State machine agent rules
├── hooks/
│   ├── pre-tool-use-hook.js  # Tool validation and filtering
│   ├── session-start-hook.js # Session initialization
│   ├── prompt-submit-hook.js # Prompt validation
│   ├── stop-hook.js          # Session completion enforcement
│   └── stop-hook-git.js      # Git state verification
└── .mcp.json