MCP server

Ecfr

io.github.pipeworx-io/ecfr

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

eCFR (Electronic Code of Federal Regulations) MCP.

Working at last checkOfficial: pipeworx.io's GitHub account (pipeworx-io)About 27,255 tokens per request once connected46 tools

https://gateway.pipeworx.io/ecfr/mcp

At a glance

Type: MCP server
Publisher: pipeworx.io (verified by the MCP Registry)
Status: Working at last check
Tools: 46
Token cost: About 27,255 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

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 ecfr https://gateway.pipeworx.io/ecfr/mcp

Claude Desktop

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

Codex (config.toml)

[mcp_servers.ecfr]
url = "https://gateway.pipeworx.io/ecfr/mcp"

Gemini CLI

{"mcpServers":{"ecfr":{"httpUrl":"https://gateway.pipeworx.io/ecfr/mcp"}}}

Cursor

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

VS Code

{"servers":{"ecfr":{"type":"http","url":"https://gateway.pipeworx.io/ecfr/mcp"}}}

Antigravity

agy mcp add ecfr https://gateway.pipeworx.io/ecfr/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":"ecfr","server_url":"https://gateway.pipeworx.io/ecfr/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"ecfr","server_url":"https://gateway.pipeworx.io/ecfr/mcp"}

get_section_text ~388 tokens
Get the actual REGULATION TEXT currently in force — a single CFR section OR a whole CFR part. PREFER for "what does 14 CFR 91.113 say", "read the text of <citation>", "the exact wording of <regulation>", "text of 22 CFR part 120", "40 CFR part 261". Pass the title number plus EITHER a section (e.g.
list_titles ~91 tokens
List all 50 titles of the US Code of Federal Regulations (Title 1 General Provisions … Title 50 Wildlife and Fisheries), with currency dates. This is the index for the `title` filter in search_regulations. Keyless.
search_regulations ~295 tokens
Full-text search across all 50 titles of the US Code of Federal Regulations (federal agency regulations) via the official eCFR API. Returns matching sections with citation, heading, and excerpt. e.g. "drone operation", "food labeling", "overtime pay". Optionally restrict to one CFR title number. Key
title_structure ~178 tokens
Get the top-level structure (chapters/subtitles) of one CFR title — the agencies and major divisions within that title. Returns a summarized one-level view, not the full deep tree. Keyless.

eCFR
Electronic Code of Federal Regulations including FAR, DFARS, and agency supplements. 13 tools.
GovInbox
Federal contract opportunities for government contractors. Set-aside coverage is the deepest part.
eCFR.io Federal Regulations
Search and read US federal regulations with legal and inline citations linking to ecfr.io.
Federal Regulations
Search and trace US federal rules across the Federal Register, eCFR, and Regulations.gov.
eCFR MCP Server
Federal regulations via MCP from the eCFR API
MCPFax Public-Data Utility API
One public fact when you have no API key: where, what time, what rate. 31 lookups.
LiveDataLink
294 public-data tools across 60 domains; source freshness varies. Free tier.
US Federal Regulations (CFR)
Read a CFR or eCFR section, or search US federal regulations and the Federal Register.

[![AptLynx](https://aptlynx.net/badge/io.github.pipeworx-io/ecfr.svg)](https://aptlynx.net/servers/io.github.pipeworx-io/ecfr)

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