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Agent Tools

US Federal Regulations (CFR)

Read US federal regulations and new proposals in the Federal Register.

Price
Free
API key
None
Limit
60 calls a minute
Tools
3
Ask your assistant
What does 21 CFR 11.10 say?

What it does

  • Reads the current text of any section of the US Code of Federal Regulations (eCFR)
  • Shows a section's heading, statutory authority and amendment history with a link
  • Searches eCFR text and federal compliance rules by words, in one title or all of them
  • Searches the Federal Register for rules, proposed rules, notices, rulemakings and executive orders
  • Shows comment deadlines, effective dates and the CFR parts a document changes

Tools

  • get_cfr_sectionRead an eCFR section (FDA, OSHA, EPA)
  • search_cfrSearch federal regulations and compliance
  • search_federal_registerSearch the Federal Register and rulemakings

Connect

https://rules.openkrill.app/mcp

Claude Code:

claude mcp add --transport http rules https://rules.openkrill.app/mcp

Hermes Agent:

printf 'n\ny\n' | hermes mcp add rules --url https://rules.openkrill.app/mcp

Go further

Full text for agents: rules.md, llms.txt. Version 1.1.0, 2026-10-18.