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robots txt fetch marker across crawlers

robots txt fetch marker across 1 crawlers from 1 vendors, from 1 claims, last verified 2026-09-13.

robots txt fetch marker across 1 crawlers from 1 vendors, from 1 claims, last verified 2026-09-13.

CrawlerVendorValueMethodVerifiedClaim
GPTBotOpenAIyesvendor_doc2026-09-13claim 85

Not documented

CrawlerVendor
Claude-SearchBotAnthropic
Claude-UserAnthropic
ClaudeBotAnthropic
ApplebotApple
Applebot-ExtendedApple
Google-ExtendedGoogle
GoogleOtherGoogle
GooglebotGoogle
BingbotMicrosoft
ChatGPT-UserOpenAI
OAI-AdsBotOpenAI
OAI-SearchBotOpenAI
Perplexity-UserPerplexity
PerplexityBotPerplexity

Sources

Source
https://developers.openai.com/api/docs/bots