AI search · DuckDuckGo

DuckAssistBot

Fetches pages for DuckAssist, the AI-generated answers at the top of DuckDuckGo results.

Operator: DuckDuckGo
Purpose: AI answers. Crawlers that build the indexes AI assistants answer from and cite. Blocking one keeps you out of its answers.
robots.txt token: DuckAssistBot
User agent: DuckAssistBot/1.0; (+http://duckduckgo.com/duckassistbot.html)
Documentation: duckduckgo.com/duckduckgo-help-pages/results/duckassistbot

Block DuckAssistBot

Add a group naming it to /robots.txt. Compliant crawlers stop before requesting any page. A firewall rule on the user agent is the only way to enforce it against crawlers that ignore robots.txt.

User-agent: DuckAssistBot
Disallow: /

Allow DuckAssistBot when everything else is blocked

A group naming the bot wins over User-agent: *, so an explicit allow lets it in while your catch-all rules stay in place.

User-agent: DuckAssistBot
Allow: /

User-agent: *
Disallow: /

Does DuckAssistBot reach your site?

The checker applies your robots.txt the way DuckAssistBot does, then requests your page with the user agent above, alongside 29 other bots.

Also run by DuckDuckGo: DuckDuckBot.

Other ai search: OAI-SearchBot, PerplexityBot, Claude-SearchBot, Amazonbot, YouBot.

Build a complete file with the robots.txt generator.