io.github.cyanheads/federal-regulations-mcp-server

io.github.cyanheads/federal-regulations-mcp-server

Search and trace US federal rules across the Federal Register, eCFR, and Regulations.gov.

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Connect this server

Add this to your MCP client config — claude_desktop_config.json (Claude Desktop) or .cursor/mcp.json (Cursor).Suits: Claude Desktop · Cursor.

{
  "mcpServers": {
    "federal-regulations-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/federal-regulations-mcp-server@0.6.1"
      ],
      "env": {
        "REGULATIONS_GOV_API_KEY": "<your REGULATIONS_GOV_API_KEY>",
        "REGULATIONS_CLAMP_LIMITS": "true",
        "MCP_LOG_LEVEL": "info"
      }
    }
  }
}
Environment variables
  • REGULATIONS_GOV_API_KEYsecretapi.data.gov key for the Regulations.gov tools (get_docket, find_comments). Free at https://api.data.gov/signup/. The Federal Register and eCFR tools work without it.
  • REGULATIONS_CLAMP_LIMITSServe a per_page or max_chars above its ceiling at the ceiling, with a notice. Set false to advertise and enforce the ceiling as a schema maximum instead.
  • MCP_LOG_LEVELSets the minimum log level for output (e.g., 'debug', 'info', 'warn').

A starting point — check the repository for exact arguments and setup. Restart your client after editing the config.

Category
Developer Tools
Version
0.6.1
Registry
active
Published
10/29/2026

Remotes

  • streamable-httphttps://federal-regulations.caseyjhand.com/mcp

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