MCP server

Federal Regulations

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

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

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

Source

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

7

Token cost

About 7,229 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http federal-regulations-mcp-server https://federal-regulations.caseyjhand.com/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.federal-regulations-mcp-server]
url = "https://federal-regulations.caseyjhand.com/mcp"

Gemini CLI

{"mcpServers":{"federal-regulations-mcp-server":{"httpUrl":"https://federal-regulations.caseyjhand.com/mcp"}}}

Cursor

{"mcpServers":{"federal-regulations-mcp-server":{"url":"https://federal-regulations.caseyjhand.com/mcp"}}}

VS Code

{"servers":{"federal-regulations-mcp-server":{"type":"http","url":"https://federal-regulations.caseyjhand.com/mcp"}}}

Antigravity

agy mcp add federal-regulations-mcp-server https://federal-regulations.caseyjhand.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"federal-regulations-mcp-server","server_url":"https://federal-regulations.caseyjhand.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"federal-regulations-mcp-server","server_url":"https://federal-regulations.caseyjhand.com/mcp"}

Tools

• regulations_browse_cfr Browses the web · ~1017 tokens
  Explore the codified Code of Federal Regulations via eCFR in two modes. "structure" lists all 50 titles; with a title, that title's top-level divisions (its chapters, or subtitles); and with a title and part, every section and appendix in the part, flattened and paged, each naming the subpart and su
• regulations_find_comments ~1332 tokens
  Fetch public comments on a Federal Register document or a Regulations.gov docket — the unique corpus of what citizens and organizations actually submitted. Provide exactly one targeting parameter: docket_id (all comments in a docket, broadest), document_object_id (comments on one document, by its ob
• regulations_get_cfr_section ~1168 tokens
  Read the codified text at a CFR location via eCFR — current or as of a past date. Answers "what does 40 CFR 50.1 say today?" and "...as of 2019-01-01?". Three locations: title + part + section for one section; title + part alone for the whole part, with its Authority and Source notes, an index of it
• regulations_get_docket ~606 tokens
  Pull a rulemaking docket from Regulations.gov by docket ID (e.g. "EPA-HQ-OAR-2025-0194") — the docket's metadata (title, agency, RIN, abstract) and the documents filed in it (NPRM, final rule, supporting materials). The docket is the folder holding a rule's whole paper trail; each returned document'
• regulations_get_document ~633 tokens
  Fetch one Federal Register document by its FR document number — full metadata (title, type, agencies, abstract, action, effective/comment dates, RINs) plus the cross-source handles that make this a workflow server. The output carries the Regulations.gov docket ID (chain into regulations_get_docket o
• regulations_list_open_comments ~743 tokens
  List Federal Register documents currently open for public comment, sorted by closing date (soonest first) across the whole open window, filterable by document type, agency slug, and topic. "What can I still weigh in on?" Covers proposed rules and the final rules that take comment (direct final and i
• regulations_search_rules ~1730 tokens
  Search the Federal Register — the daily journal of US proposed rules, final rules, notices, and presidential documents (1994–present) — filtering by full-text query, document type, agency slug, publication date range, affected CFR title and part, printed docket number, and RIN, all combined. A page

Browse

• GitHub tools
• PDF tools
• Word documents
• GitHub and code hosting

Related MCP servers

• Ecfr
  eCFR (Electronic Code of Federal Regulations) MCP.
• US Federal Regulations (CFR)
  Read a CFR or eCFR section, or search US federal regulations and the Federal Register.
• eCFR.io Federal Regulations
  Search and read US federal regulations with legal and inline citations linking to ecfr.io.
• Federal Register
  Federal Register MCP — US Federal Register API (free, no auth)
• eCFR
  Electronic Code of Federal Regulations including FAR, DFARS, and agency supplements. 13 tools.
• LiveDataLink
  294 public-data tools across 60 domains; source freshness varies. Free tier.
• FedReg Tracker
  Federal regulatory intelligence from the Federal Register: search rules and notices, track deadlines
• eCFR MCP Server
  Federal regulations via MCP from the eCFR API

Badge for your README

[![AptLynx](https://aptlynx.net/badge/io.github.cyanheads/federal-regulations-mcp-server.svg)](https://aptlynx.net/servers/io.github.cyanheads/federal-regulations-mcp-server)

Listing text is written by the maker; AptLynx lists tools and does not vouch for them. Find another tool · Browse by topic · For agents