Local + RemoteFree

Reference Data MCP server

cyanheads/reference-data-mcp-server

Countries, timezones, elements, constants, HTTP status codes, unit conversion, and MIME type lookup.

1 GitHub stars
Source code

Install Reference Data in Claude Code

Remote URL

Claude Code
claude mcp add --transport http reference-data https://reference-data.caseyjhand.com/mcp
mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)
{
  "mcpServers": {
    "reference-data": {
      "url": "https://reference-data.caseyjhand.com/mcp"
    }
  }
}

npm

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

Frequently asked questions

What does the Reference Data MCP server do?

Countries, timezones, elements, constants, HTTP status codes, unit conversion, and MIME type lookup.

Is the Reference Data 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 Reference Data run locally or remotely?

Local + Remote. Can run locally or be used as a hosted remote server.

How do I add Reference Data to Claude Code?

Run: claude mcp add --transport http reference-data https://reference-data.caseyjhand.com/mcp

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