Rigor MCP Server: Install & Setup

Install Rigor in Claude Code

Claude Code

claude mcp add rigor -- uvx rigor-mcp

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

{
  "mcpServers": {
    "rigor": {
      "command": "uvx",
      "args": [
        "rigor-mcp"
      ]
    }
  }
}

Frequently asked questions

What does the Rigor MCP server do?

Classical hypothesis testing, effect sizes, power and sample-size analysis and multiple-comparisons correction, returned as cited, assumption-checked answers.

Is the Rigor 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 Rigor run locally or remotely?

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

How do I add Rigor to Claude Code?

Run: claude mcp add rigor -- uvx rigor-mcp

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