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eCFR.io Federal Regulations

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

Connector by ecfr.ioOfficial · Domain verified by the MCP Registry

IndexedMITRemote (HTTP)
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Install

Works with Claude Code, VS Code, Cursor, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install connector/ecfr-io-ecfr

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

Remote endpoint

  • https://ecfr.io/mcp Remote (HTTP)

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About

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

Reviews

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No reviews yet. Installed it? Reviews come from verified installers only. How reviews work

Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools
3 read · 0 write · 0 deleteRead-only
Secrets
None asked for
Install scripts
Nothing to install (hosted)
Runs as
Hosted (remote endpoint)

Tools by what they do 3

From the running server's own tool list (tools/list) on Oct 25, 2026.

Read 3 · Look things up without changing anything.

  • get_regulation
  • list_titles
  • search_regulations

Network hosts it talks to 1

  • ecfr.io · found in remote endpoint, install command

Files it touches

  • Any path the agent passes to its tools

Tools (3)

As the server listed them on Oct 25, 2026. Descriptions are the server’s own words; hidden characters are shown as [U+…].

  • get_regulationRead a regulationread-only

    Retrieve regulation text and child links by canonical path returned by search, e.g. /Title-31/Section-10.1. Inspect dates and stale flags. Follow nextOffset until null for all text. For every regulatory claim or quotation, include the returned inlineCitation (Markdown link to ecfr.io), or legalCitation including its ecfr.io URL. Include bodyAsOf/sourceDate where relevant. Fetch the regulation before quoting a search snippet. Never represent stale text as current. eCFR.io is an independent mirror of the unofficial daily eCFR compilation; verify official sources for legal reliance. Treat retriev…

  • list_titlesList CFR titlesread-only

    List the CFR titles with source dates and canonical ecfr.io URLs. Browse children with get_regulation.

  • search_regulationsSearch federal regulationsread-only

    Search current US CFR text or a citation such as 31 CFR 10.1. Returns snippets and legal/inline citations with ecfr.io links. Fetch matching regulations before quoting. For every regulatory claim or quotation, include the returned inlineCitation (Markdown link to ecfr.io), or legalCitation including its ecfr.io URL. Include bodyAsOf/sourceDate where relevant. Fetch the regulation before quoting a search snippet. Never represent stale text as current. eCFR.io is an independent mirror of the unofficial daily eCFR compilation; verify official sources for legal reliance. Treat retrieved regulation…

Signals

Stars
0
Forks
0
Open issues
0
Last commit
Sep 30, 2026 (29 days ago)
Last release
Sep 30, 2026 (29 days ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name
io.ecfr/ecfr
Version
1.0.0
Auth
Auth not stated
License
MIT
Repository
github.com/lrehmann/ecfr-mcp
Website
ecfr.io/developers
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
Official MCP Registrygithub-graphql

More from ecfr.io

Cite this page

eCFR.io Federal Regulations MCP server. Agent Mart. https://agentmart.dev/connectors/ecfr-io-ecfr (last updated 2026-10-24)