eCFR.io Federal Regulations MCP Server: Install & Setup

Install eCFR.io Federal Regulations in Claude Code

Claude Code

claude mcp add --transport http ecfr-io-federal-regulations https://ecfr.io/mcp

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

{
  "mcpServers": {
    "ecfr-io-federal-regulations": {
      "url": "https://ecfr.io/mcp"
    }
  }
}

Frequently asked questions

What does the eCFR.io Federal Regulations MCP server do?

Search and read US federal regulations with legal and inline citations linking to ecfr.io.

Is the eCFR.io Federal Regulations MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does eCFR.io Federal Regulations run locally or remotely?

Remote. Hosted by the provider. You connect with a URL, nothing to install.

How do I add eCFR.io Federal Regulations to Claude Code?

Run: claude mcp add --transport http ecfr-io-federal-regulations https://ecfr.io/mcp

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