Rattlesnakes By Mail

Claim 43

Anthropic does not document Claude-User as a search or training opt-out token.

entity
Claude-User
field
separate_search_and_training_tokens
value
not_documented
statement
Anthropic does not document Claude-User as a search or training opt-out token.
evidence_url
https://support.claude.com/en/articles/8896518-does-anthropic-crawl-content-from-the-web-and-how-can-site-owners-block-the-crawler
evidence_quote
"Claude-User allows site owners to control which sites can be accessed through these user-initiated requests." source dated 2026-04-07
method
vendor_doc
verified_at
2026-09-13
confidence
medium
status
current
supersedes
none

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