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How clinicaltrials.gov treats AI agents

Open to agents. Last checked 25 October 2026.

clinicaltrials.gov is open to AI agents: no bot wall, robots.txt restricts some paths, no llms.txt, feed or sitemap.

Fact	Value	Source
Access	Open	Registry check, unverified, 25 Oct 2026
Bot wall	None	Registry check, unverified, 25 Oct 2026
robots.txt	Restricts some paths	Registry check, unverified, 25 Oct 2026
Machine interface	None found	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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Sites open to AI agents

Questions

Does clinicaltrials.gov block AI bots?

No. clinicaltrials.gov is open to AI agents.

Does clinicaltrials.gov have an llms.txt?

No llms.txt was found.

Does clinicaltrials.gov use a bot wall?

No bot wall was seen.

Use this from an agent

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