eCFR MCP server

by 1102tools.com·com.1102tools/ecfr-mcp·v1.0.10

Electronic Code of Federal Regulations including FAR, DFARS, and agency supplements. 13 tools.

A88/100grade A

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A88/100

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24 stars525 downloads/wk

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

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

compare_versions
Compare the text of a CFR section at two different dates.
find_far_definition
Search for a term's definition in FAR 2.101 (master definition section).
find_recent_changes
Find CFR sections that have been modified since a given date.
get_ancestry
Get the breadcrumb hierarchy path for a section, part, or appendix.
get_cfr_content
Get the full text of a CFR section, subpart, part, or appendix.
get_cfr_structure
Get the hierarchical table of contents for a CFR title or subset.
get_corrections
Get editorial corrections for a CFR title.
get_latest_date
Get the most recent available date for a CFR title.
get_version_history
Get the version history of a CFR section, subpart, or part.
list_agencies
List all agencies with their CFR title and chapter references.
list_sections_in_part
List all sections in a FAR/DFARS part with their headings.
lookup_far_clause
Convenience tool: look up the current text of a FAR or DFARS clause.
search_cfr
Full-text search across the Code of Federal Regulations.

scanner v0.1.5 · 2026-09-19 · same rubric, same numbers if you re-run it

no findings

Code scan11 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 6 days ago15/15
Maintainer identitynamespace and repository owner differ; website matches verified namespace5/10

Overall 88/100. 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 ecfr-mcp -- uvx ecfr-mcp

Is eCFR MCP server safe?: Yes, by our scan: it is graded A (88/100). Read the eCFR safety report
How do I install eCFR?: It runs on your machine. Copy the Claude Code, Claude Desktop or Cursor config from the install section.
Does eCFR need an API key?: Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is eCFR maintained?: The last commit was 6 days ago (2026-09-13). The latest release is v1.0.10.