ecfr 3 tools

MCP server exposing 3 tools for ecfr.

Endpoint

This URL is a JSON-RPC 2.0 endpoint over HTTP. Issue POST requests with a JSON-RPC body. Browsers and search crawlers land here on GET.

POST https://gateway.pipeworx.io/ecfr/mcp
Content-Type: application/json

{"jsonrpc":"2.0","id":1,"method":"tools/list"}

search_regulations — Full-text search across all 50 titles of the US Code of Federal Regulations (federal agency regulations) via the official eCFR API. Returns matching sections with citation, heading, and excerpt. e.g. "drone operation", "food labeling", "overtime pay". Optionally restrict to one CFR title number. Keyless.
list_titles — List all 50 titles of the US Code of Federal Regulations (Title 1 General Provisions … Title 50 Wildlife and Fisheries), with currency dates. This is the index for the `title` filter in search_regulations. Keyless.
title_structure — Get the top-level structure (chapters/subtitles) of one CFR title — the agencies and major divisions within that title. Returns a summarized one-level view, not the full deep tree. Keyless.

Code samples (curl / TypeScript / one-click client install), schemas, and the live playground are on the pack page:
https://pipeworx.io/packs/ecfr/

Pipeworx is an open MCP gateway connecting AI agents to live data. pipeworx.io