LocalFree

Diff MCP server

mrfentmen/diff-mcp

Compare two texts or files and show line changes locally. No network and no key.

Source code

Install Diff in Claude Code

Claude Code
claude mcp add diff -- npx -y @mrfentmen/diff-mcp
mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)
{
  "mcpServers": {
    "diff": {
      "command": "npx",
      "args": [
        "-y",
        "@mrfentmen/diff-mcp"
      ]
    }
  }
}

Frequently asked questions

What does the Diff MCP server do?

Compare two texts or files and show line changes locally. No network and no key.

Is the Diff 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 Diff run locally or remotely?

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

How do I add Diff to Claude Code?

Run: claude mcp add diff -- npx -y @mrfentmen/diff-mcp

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