What is DuckAssistBot?
DuckAssistBot is DuckDuckGo's AI search index crawler. Powers DuckDuckGo's AI-assisted answers.
What does DuckAssistBot do with your content?
Powers DuckDuckGo's AI-assisted answers. Like most AI crawlers, DuckAssistBot reads your pages as plain HTML — it does not run JavaScript — so content that only appears after scripts execute is invisible to it.
Should you block DuckAssistBot?
Blocking DuckAssistBot makes your business invisible to DuckDuckGo's AI when customers ask it for recommendations. If you want to be found, allow it; block it only if you have a specific reason to keep DuckDuckGo's AI away from your content.
How do you allow or block DuckAssistBot in robots.txt?
Add one of these snippets to the robots.txt file at the root of your site. The first explicitly allows DuckAssistBot everywhere; the second blocks it completely.
# Allow DuckAssistBot
User-agent: DuckAssistBot
Allow: /
# Block DuckAssistBot
User-agent: DuckAssistBot
Disallow: /Is robots.txt enough?
Not always. CDNs and firewalls (Cloudflare in particular) can block crawlers at the network level regardless of what robots.txt says — Cloudflare blocks AI crawlers by default for many accounts. If you want DuckAssistBot to reach your site, check your CDN's bot settings too. SeeGeo's free audit checks both.
How do I check whether DuckAssistBot can read my site right now?
Two checks, both needed: read your robots.txt for a group naming DuckAssistBot (or the * group it falls back to), then request your homepage with DuckAssistBot's user agent and confirm you get a 200 with your real HTML rather than a 403 or a challenge page. SeeGeo's free crawler check runs both in a few seconds.
How does DuckAssistBot compare to similar crawlers?
DuckAssistBot is one of 16 crawlers the SeeGeo audit checks individually. The closest comparisons:
| Crawler | Operator | Role | Runs JavaScript? |
|---|---|---|---|
| DuckAssistBot | DuckDuckGo | AI search index crawler | No |
| OAI-SearchBot | OpenAI | AI search index crawler | No |
| PerplexityBot | Perplexity | AI search index crawler | No |
| Amazonbot | Amazon | AI search index crawler | No |
Why does crawler access matter? The numbers
Crawler access is where AI visibility starts or ends: a blocked crawler can't read you, and an AI that can't read you can't recommend you.
- Visitors arriving from AI assistants convert at roughly 4.4x the rate of traditional organic search on average (Semrush, cross-industry, 2026).
- AI-assistant referrals are still only about 1% of total web traffic — small, but the fastest-growing acquisition channel measured (multiple 2026 studies).
- Adobe Digital Insights (Q1 2026) measured AI-assistant visitors converting 42% better than non-AI traffic — a full reversal from the year before.
- Cloudflare blocks AI crawlers by default for many accounts, so sites are often invisible to AI without anyone having decided to be.
- Content edits alone — statistics, citations, quotable structure — can raise AI visibility on the order of 30–40% (Princeton GEO study, KDD 2024).
Frequently asked questions
What is DuckAssistBot?
DuckAssistBot is DuckDuckGo's AI search index crawler. Powers DuckDuckGo's AI-assisted answers.
Should I block DuckAssistBot?
Blocking DuckAssistBot makes your business invisible to DuckDuckGo's AI when customers ask it for recommendations. If you want to be found, allow it; block it only if you have a specific reason to keep DuckDuckGo's AI away from your content..
Does DuckAssistBot run JavaScript?
No. DuckAssistBot, like most AI crawlers, reads raw HTML without executing JavaScript. If your content only renders client-side, it is effectively invisible to it.
Can DuckAssistBot read my website?
Only if two things are true: your robots.txt does not disallow DuckAssistBot, and your server or CDN actually serves the page when DuckAssistBot asks. Firewalls can block it regardless of robots.txt, so the reliable way to know is to fetch your homepage as DuckAssistBot — the free check on see-geo.com/ai-crawler-check does exactly that.