Arc Free Skills MCP Server: Install & Setup

Install Arc Free Skills in Claude Code

PyPI (uv)

Claude Code

claude mcp add arc-free-skills -e ARC_FREE_SKILLS_WORKSPACE=... -- uvx arc-free-skills

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

{
  "mcpServers": {
    "arc-free-skills": {
      "command": "uvx",
      "args": [
        "arc-free-skills"
      ],
      "env": {
        "ARC_FREE_SKILLS_WORKSPACE": "..."
      }
    }
  }
}

PyPI (uv)

Claude Code

claude mcp add arc-free-skills -e ARC_ENGINEERING_WORKSPACE=... -- uvx arc-engineering-mcp

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

{
  "mcpServers": {
    "arc-free-skills": {
      "command": "uvx",
      "args": [
        "arc-engineering-mcp"
      ],
      "env": {
        "ARC_ENGINEERING_WORKSPACE": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the Arc Free Skills MCP server do?

100 systems and hardware engineering skills for requirements, interfaces, budgets and verification.

Is the Arc Free Skills 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 Arc Free Skills run locally or remotely?

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

How do I add Arc Free Skills to Claude Code?

Run: claude mcp add arc-free-skills -e ARC_FREE_SKILLS_WORKSPACE=... -- uvx arc-free-skills

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