ClefMCP MCP Server: Install & Setup

Install ClefMCP in Claude Code

Claude Code

claude mcp add clefmcp -- npx -y clef-mcp

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

{
  "mcpServers": {
    "clefmcp": {
      "command": "npx",
      "args": [
        "-y",
        "clef-mcp"
      ]
    }
  }
}

Frequently asked questions

What does the ClefMCP MCP server do?

Local Clef-Flash decision model for coding agents: clef_decide returns probability distributions over your options (choice/score/yes-no) via llama.cpp, fully offline, one-command install.

Is the ClefMCP 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 ClefMCP run locally or remotely?

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

How do I add ClefMCP to Claude Code?

Run: claude mcp add clefmcp -- npx -y clef-mcp

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