Rattlesnakes By Mail

Claude-User vs ClaudeBot

Claude-User and ClaudeBot compared on 15 documented fields, from 22 claims, last verified 2026-09-15.

Field	Claude-User	ClaudeBot	Comparison
anti_circumvention_stance	not documented	documented	different
cites_sources	not_documented	not documented	different
honours_crawl_delay	yes	yes	same
observed_fetches_json	not documented	yes	different
observed_fetches_markdown	not documented	yes	different
observed_first_request_path	not documented	/sitemap.xml	different
observed_format_pass_order	not documented	html_json_md	different
publishes_ip_list	yes	yes	same
purpose_documented	user_fetch	training	different
reads_llms_txt	not_documented	not documented	different
respects_robots_txt	yes	yes	same
separate_search_and_training_tokens	not_documented	yes	different
user_agent_string_full	not_documented	not_documented	same
user_fetch_exception_documented	no	not documented	different
verifiable_by_rdns	not_documented	not_documented	same

Differences

Field	Claude-User statement	ClaudeBot statement
anti_circumvention_stance	not documented	ClaudeBot respects anti-circumvention technologies and does not bypass CAPTCHAs on crawled sites.
cites_sources	Anthropic does not publish whether Claude responses cite pages fetched by Claude-User.	not documented
observed_fetches_json	not documented	ClaudeBot made 177 JSON requests to Rattlesnakes By Mail between 2026-09-13T20:00Z and 2026-09-15T09:00Z, covering the .json twin of 170 base paths. The .json URLs of Rattlesnakes By Mail appear in no entry of the 171 URL sitemap.
observed_fetches_markdown	not documented	ClaudeBot fetched the .md twin of 170 base paths on Rattlesnakes By Mail between 2026-09-13T20:00Z and 2026-09-15T09:00Z, 170 Markdown requests of 542 ClaudeBot requests in that window. The .md URLs of Rattlesnakes By Mail appear in no entry of the 171 URL sitemap.
observed_first_request_path	not documented	ClaudeBot's first request to Rattlesnakes By Mail between 2026-09-13T20:00Z and 2026-09-15T09:00Z was /sitemap.xml at 2026-09-14T19:53:45Z. ClaudeBot fetched /robots.txt on the second request to Rattlesnakes By Mail.
observed_format_pass_order	not documented	ClaudeBot fetched Rattlesnakes By Mail in three format passes between 2026-09-13T20:00Z and 2026-09-15T09:00Z, HTML from 2026-09-14T20:52Z to 2026-09-14T20:57Z, then JSON from 2026-09-14T21:37Z to 2026-09-14T21:56Z, then Markdown from 2026-09-14T21:37Z to 2026-09-14T21:57Z. The same order holds on 170 of 170 base paths that ClaudeBot fetched in all three formats on Rattlesnakes By Mail.
purpose_documented	Claude-User accesses websites in response to questions that individual users ask Claude.	ClaudeBot collects web content for training Anthropic generative AI models.
reads_llms_txt	Anthropic does not publish whether Claude-User reads llms.txt files.	not documented
separate_search_and_training_tokens	Anthropic does not document Claude-User as a search or training opt-out token.	Anthropic separates training and search controls into two robots.txt tokens: ClaudeBot for training and Claude-SearchBot for search.
user_fetch_exception_documented	Anthropic applies the same robots.txt statement to Claude-User as to ClaudeBot and Claude-SearchBot and documents no exception for user-initiated fetches.	not documented

Sources