US Code of Federal Regulations MCP server

by mccallar·io.github.mccallar/cfr-mcp·v0.2.2

Look up, search, and track changes to the US Code of Federal Regulations (eCFR).

A92/100grade A

What users say

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Safety scan

A92/100

Adoption

Growing

1 stars34 downloads/wk

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Nobody has reviewed US Code of Federal Regulations yet.

If you have run it, two minutes of your experience saves the next person an afternoon.

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

browse_structure
Return the CFR hierarchy for a title (or one part) without any text.
compare_versions
Show how a citation's text differs between two dates, as a diff.
list_agencies
List federal agencies and the CFR titles/chapters they administer.
lookup_citation
Retrieve the text of a specific CFR citation.
search_regulations
Full-text search across the CFR.
what_changed
List amendment dates for a citation, plus any published corrections.
where_does_term_appear
Show which titles/chapters/parts contain a term, with hit counts.

scanner v0.1.9 · 2026-09-20 · same rubric, same numbers if you re-run it

no findings

Code scan8 source files scanned25/25
–Live reliabilityno gateway calls yet and no remote to proben/a
–Tool poisoningtools not inspected (local package is not executed); not countedn/a
Auth qualitylocal package, no credentials required12/15
Maintenancelast push 22 days ago15/15
Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10

Overall 92/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

claude mcp add cfr-mcp -- uvx cfr-mcp

Is US Code of Federal Regulations MCP server safe?: Yes, by our scan: it is graded A (92/100). Read the US Code of Federal Regulations safety report
How do I install US Code of Federal Regulations?: It runs on your machine. Copy the Claude Code, Claude Desktop or Cursor config from the install section.
Does US Code of Federal Regulations need an API key?: Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is US Code of Federal Regulations maintained?: The last commit was 22 days ago (2026-08-29). The latest release is v0.2.2.
What can I use instead of US Code of Federal Regulations?: Servers from other publishers that do the same job: GEO Tracker by DigestSEO MCP server and Ris Austria MCP server.

Same job from other publishers: the closest match first, then the best rated.

GEO Tracker by DigestSEO
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