Rattlesnakes By Mail

Google-Extended vs GoogleOther

Google-Extended and GoogleOther compared on 11 documented fields, from 17 claims, last verified 2026-09-15.

Field	Google-Extended	GoogleOther	Comparison
honours_crawl_delay	n/a	no	different
observed_fetches_robots_txt	not documented	no	different
observed_requested_mcp_endpoint	not documented	yes	different
publishes_ip_list	no	yes	different
purpose_documented	policy_only	mixed	different
respects_robots_txt	n/a	yes	different
robots_token_differs_from_ua	yes	not documented	different
robots_txt_token	not documented	GoogleOther	different
separate_search_and_training_tokens	yes	not_documented	different
verifiable_by_rdns	n/a	yes	different
what_it_controls	Gemini model training and grounding, not Search inclusion	not documented	different

Differences

Field	Google-Extended statement	GoogleOther statement
honours_crawl_delay	Google does not publish any Crawl-delay behaviour for the Google-Extended token.	Google does not support the robots.txt Crawl-delay directive for GoogleOther.
observed_fetches_robots_txt	not documented	GoogleOther made 93 requests to Rattlesnakes By Mail between 2026-09-13T20:00Z and 2026-09-15T09:00Z and fetched /robots.txt on none of those requests. GoogleOther's first request to Rattlesnakes By Mail was the home page at 2026-09-14T12:03:30Z.
observed_requested_mcp_endpoint	not documented	GoogleOther requested the /mcp endpoint of Rattlesnakes By Mail twice between 2026-09-13T20:00Z and 2026-09-15T09:00Z, at 2026-09-14T15:07:30Z and at 2026-09-14T18:27:49Z. Rattlesnakes By Mail returned status 405 to both GoogleOther requests for /mcp.
publishes_ip_list	Google publishes no IP list for Google-Extended because Google-Extended has no separate HTTP request user agent string.	Google publishes the IP address ranges used by GoogleOther at https://developers.google.com/static/crawling/ipranges/common-crawlers.json.
purpose_documented	Google-Extended is a standalone product token that controls whether Google uses crawled content to train Gemini models.	GoogleOther is a generic crawler that Google product teams use to fetch publicly accessible content from sites.
respects_robots_txt	Google-Extended is a robots.txt token that publishers set to control use of crawled content for Gemini training.	GoogleOther obeys robots.txt rules when crawling automatically.
robots_token_differs_from_ua	Google-Extended is a robots.txt control token and does not correspond to a crawler user agent string.	not documented
robots_txt_token	not documented	The robots.txt token for GoogleOther is GoogleOther.
separate_search_and_training_tokens	Google-Extended controls Gemini training use only and does not affect inclusion in Google Search.	Google does not document whether content fetched by GoogleOther is used for Gemini training.
verifiable_by_rdns	Google does not publish a reverse-DNS verification method for Google-Extended.	GoogleOther requests are verifiable by reverse DNS lookup resolving to googlebot.com, google.com, or googleusercontent.com.
what_it_controls	Google-Extended controls AI training and grounding in Google systems and does not control Google Search inclusion.	not documented

Sources