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eCFR.io Federal Regulations

MCP server · by ecfr

Legal & Compliance Streamable HTTP v1.0.0

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

View source ↗ Website ↗ More servers

Install

Run one of the commands below, then add the client config underneath.

Streamable HTTPhttps://ecfr.io/mcp

Client configuration

Paste into Claude Desktop, Cursor (mcp.json), VS Code or any MCP client, then restart the client.

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

About this server

eCFR.io Federal Regulations is listed in the Legal & Compliance category of the MCPNav directory. It is distributed as Streamable HTTP and can be loaded by any client that speaks the Model Context Protocol.

Typical uses include giving your assistant scoped access to the corresponding service so it can answer questions and take actions with real data instead of guessing. Always review what a server can access before you enable it — see our MCP security guide.

Frequently asked questions

What is the eCFR.io Federal Regulations MCP server?

eCFR.io Federal Regulations is an MCP server by ecfr. Search and read US federal regulations with legal and inline citations linking to ecfr.io.

How do I install eCFR.io Federal Regulations?

Install it with: https://ecfr.io/mcp. Then add the JSON config to your client's MCP settings and restart the client.

Is eCFR.io Federal Regulations free to use?

The MCP server itself is free to install. The source is public on https://github.com/lrehmann/ecfr-mcp. Any third-party API it calls (such as a search or maps API) may require its own key and billing.

Which clients support eCFR.io Federal Regulations?

Any MCP-compatible client can use it, including Claude Desktop, Cursor, VS Code, Windsurf and custom agents.