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AI crawlers

DuckAssistBot in robots.txt

DuckAssistBot is run by DuckDuckGo. Purpose: AI answers. Source: DuckDuckGo documentation.

What blocking DuckAssistBot changes

This agent fetches pages for AI answers in the operator's search.

Block DuckAssistBot

User-agent: DuckAssistBot
Disallow: /

Block DuckAssistBot from one folder

User-agent: DuckAssistBot
Disallow: /private/

Allow DuckAssistBot

If no group names DuckAssistBot, it follows your "User-agent: *" rules. To allow it while other bots are blocked:

User-agent: DuckAssistBot
Allow: /

More: the guide AI crawlers in robots.txt and the AI crawler checker.

Questions

What is DuckAssistBot?

DuckAssistBot is the user agent token for an agent run by DuckDuckGo. Its purpose: AI answers. See the DuckDuckGo documentation linked on this page.

How do I block DuckAssistBot?

Add a group to robots.txt with "User-agent: DuckAssistBot" and "Disallow: /". The rule applies to agents that follow robots.txt.

How do I check if my site blocks DuckAssistBot?

Run the free check on this site. It tests your robots.txt against 8 AI agents on your homepage. The $19 deep report tests 18 agents per path.

AI crawler and llms.txt updates

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