Mason MCP Server: Install & Setup

Install Mason in Claude Code

Claude Code

claude mcp add mason -- npx -y mason-context

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "mason": {
      "command": "npx",
      "args": [
        "-y",
        "mason-context"
      ]
    }
  }
}

Frequently asked questions

What does the Mason MCP server do?

Generates CLAUDE.md from git history and file sampling, and keeps a concept map linking features and flows to files so agents skip repeated searches.

Is the Mason MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does Mason run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Mason to Claude Code?

Run: claude mcp add mason -- npx -y mason-context

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