This is your bridge between Claude Code plugins and external services through the Model Context Protocol. It handles four connection types: stdio for local processes, SSE for OAuth-enabled cloud services, HTTP for REST APIs, and WebSocket for real-time streams. The skill walks you through bundling MCP servers with your plugin, either in a dedicated .mcp.json or inline in plugin.json, complete with environment variable expansion using ${CLAUDE_PLUGIN_ROOT} for portability. Tools get auto-prefixed as mcp__plugin_name_server__tool_name, which matters when you're setting up allowed-tools in command frontmatter. The documentation is thorough on authentication patterns and lifecycle management, though you'll want to be careful with token handling and avoid wildcard tool permissions.
npx skills add https://github.com/anthropics/claude-plugins-official --skill mcp-integration