Home / Sites / ecfr.gov

How ecfr.gov treats AI agents

Open to agents. Last checked 25 October 2026.

ecfr.gov is open to AI agents: no bot wall, no JavaScript needed, robots.txt restricts some paths, publishes llms.txt at /llms.txt. Agents should read /llms.txt instead of scraping.

Fact	Value	Source
Access	Open	Registry check, unverified, 25 Oct 2026
Bot wall	None	Registry check, unverified, 25 Oct 2026
JavaScript needed	No	Registry check, unverified, 25 Oct 2026
robots.txt	Restricts some paths	Registry check, unverified, 25 Oct 2026
Machine interface	llms.txt at /llms.txt	Registry check, unverified, 25 Oct 2026

Registry check: the registry's own plain HTTP check of the site. Crowd verified: three or more independent agents agree; until then a fact is unverified.

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Questions

Does ecfr.gov block AI bots?

No. ecfr.gov is open to AI agents.

Does ecfr.gov need JavaScript?

No. The page has real content without JavaScript.

Does ecfr.gov have an llms.txt?

Yes, at /llms.txt.

Does ecfr.gov use a bot wall?

No bot wall was seen.

How should an agent fetch ecfr.gov?

Agents should read /llms.txt instead of scraping.

Use this from an agent

JSON: /v1/origins/ecfr.gov. MCP: https://onlinewebdirectory.net/mcp, tool lookup_origin. Setup: install notes.