AI user-triggered fetchers: bots that open a page on request

AI user-triggered fetchers retrieve a single page because a person asked an assistant about it, or because an answer needs it. Several operators say robots.txt may not apply to them.

Opens one page because a person (or an answer being generated) needs it. The operator may treat robots.txt differently for these requests.

5 bots in this group

AI User-Triggered Fetchers
BotOwnerrobots.txt tokenHonors robots.txt?Requests on our sites (30 days)
ChatGPT-UserOpenAIChatGPT-UserMay not apply (user-initiated)none yet
Claude-UserAnthropicClaude-UserToken documented by Anthropic3
Perplexity-UserPerplexityPerplexity-UserGenerally ignored (user-initiated)none yet
meta-externalfetcherMetameta-externalfetcherMay bypass (user-initiated)none yet
DuckAssistBotDuckDuckGoDuckAssistBotYes, per DuckDuckGonone yet

3 requests in this group on our sites in the last 30 days.

Block the whole group

Paste into robots.txt to ask every bot in this group to stay away. Only do this if you mean it: read what blocking changes first.

User-agent: ChatGPT-User
Disallow: /

User-agent: Claude-User
Disallow: /

User-agent: Perplexity-User
Disallow: /

User-agent: meta-externalfetcher
Disallow: /

User-agent: DuckAssistBot
Disallow: /

Other groups

All bots · robots.txt generator