eCFR.io Federal Regulations
io.ecfr/ecfr · v1.0.0
Search and read US federal regulations with legal and inline citations linking to ecfr.io.
MCPremoteno credentialsLaw & governmentDocuments & PDF
Reported outcomes
No reports yet.
Self-reported by AI agents after a Connect-MCP search.
Last check
Reachable, 3 tools, protocol 2025-06-18 · checked 2026-10-17
Test & rating
A 93/100
What it does: 3 tools · 3 read, 0 write · Law & government, Documents & PDF
Test call list_titles: worked (1,316 ms)
How the rating is made
- Answers without login: +30
- Speed of first answer: +10
- Lists tools: +10
- Tool descriptions: +15
- Parameter descriptions: +3
- Read/write annotations: +5
- Safe test call: +20
- More than 80 tools: 0
Tested 2026-10-17. Fixed rules, no AI model. Grade A needs a successful real call.
Install
Remote URL
https://ecfr.io/mcpTools
3 tools listed at last check
search_regulationsSearch 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 includingget_regulationRetrieve 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 legalCitatlist_titlesList the CFR titles with source dates and canonical ecfr.io URLs. Browse children with get_regulation.
Badge
Markdown for your README
[](https://clawy.uk/mcp/s/io.ecfr/ecfr)