eCFR.io Federal Regulations

Name: eCFR.io Federal Regulations
Author: io.ecfr

MCP serverMCP

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

by io.ecfrrepository ↗homepage ↗v1.0.0

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Observed by Wellknown

Evidence

Everything here was measured by our prober or read from a registry. Nothing is self-reported.

30-day availability34/34 checks ok

when	check	result	http	latency	detail
2 h ago	mcp initialize	ok	200	159 ms	server ecfr-mcp 1.0.0 · protocol 2025-06-18 · 3 tools
8 h ago	mcp initialize	ok	200	127 ms	server ecfr-mcp 1.0.0 · protocol 2025-06-18 · 3 tools
14 h ago	mcp initialize	ok	200	165 ms	server ecfr-mcp 1.0.0 · protocol 2025-06-18 · 3 tools
20 h ago	mcp initialize	ok	200	118 ms	server ecfr-mcp 1.0.0 · protocol 2025-06-18 · 3 tools
26 h ago	mcp initialize	ok	200	268 ms	server ecfr-mcp 1.0.0 · protocol 2025-06-18 · 3 tools
33 h ago	mcp initialize	ok	200	247 ms	server ecfr-mcp 1.0.0 · protocol 2025-06-18 · 3 tools
2 d ago	mcp initialize	ok	200	213 ms	server ecfr-mcp 1.0.0 · protocol 2025-06-18 · 3 tools
2 d ago	mcp initialize	ok	200	169 ms	server ecfr-mcp 1.0.0 · protocol 2025-06-18 · 3 tools
2 d ago	mcp initialize	ok	200	166 ms	server ecfr-mcp 1.0.0 · protocol 2025-06-18 · 3 tools
2 d ago	mcp initialize	ok	200	35 ms	server ecfr-mcp 1.0.0 · protocol 2025-06-18 · 3 tools

Tools observed via MCP handshake

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

Declared by sources

What the publisher says

Attributed to the source that supplied each field. Treated as claims, not facts.

No long description beyond the summary.

kind Official MCP Registry

name Official MCP Registry

repoUrl Official MCP Registry

summary Official MCP Registry

version Official MCP Registry

description Official MCP Registry

homepageUrl Official MCP Registry

publisherName Official MCP Registry

Provenance

Where this record came from

Every source is kept verbatim. Field changes are logged as events.

Official MCP Registryio.ecfr/ecfr

first seen 9 d ago · fetched 8 h agoopen ↗

Field history (7 recent events)

9 d ago · declared · summary → "Search and read US federal regulations with legal and inline citations linking to ecfr.io."
9 d ago · declared · description → "Search and read US federal regulations with legal and inline citations linking to ecfr.io."
9 d ago · declared · publisherName → "io.ecfr"
9 d ago · declared · homepageUrl → "https://ecfr.io/developers"
9 d ago · declared · repoUrl → "https://github.com/lrehmann/ecfr-mcp"
9 d ago · declared · version → "1.0.0"
9 d ago · declared · protocols → ["mcp"]

This record is unclaimed

Evidence

What the publisher says

Capabilities

Where this record came from