Overview
YiyanBot is a crawler associated with Baidu, used for automated web access associated with Baidu’s Yiyan or ERNIE assistant.
Its primary user-agent pattern YiyanBot; related patterns Baidu Yiyan crawler; representative HTTP user-agent YiyanBot.
YiyanBot is unverified with Medium confidence. The identity type is Observed.
Robots.txt behavior for YiyanBot is not confirmed. Do not treat a user-agent-only rule as guaranteed enforcement.
The token is present in multiple maintained AI-crawler lists, but current first-party canonical status and network verification were not located.
Treat the user-agent as an identity claim. Corroborate it with operator-controlled IP ranges, reverse DNS, signed-request evidence, or current documentation when available.
Identity
- User-Agent Pattern
-
YiyanBot - Aliases
- Baidu Yiyan crawler
- HTTP Agent Examples
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YiyanBot - Robots Token
- YiyanBot
- Identity Type
- observed
- Evidence Method
- Match `YiyanBot` and corroborate the request with current Baidu documentation, operator-controlled network data, reverse DNS, or signed-request evidence when available.
Classification
- Type
- ai
- Kind
- crawler
- Family
- Baidu ERNIE
- Operator
- Baidu
- Company
- Baidu
- Purpose
- ai-indexing-or-training
Behavior and handling
- Common Use
- automated web access associated with Baidu's Yiyan or ERNIE assistant
- Detection Notes
- Detect primarily by `YiyanBot`; related patterns include `Baidu Yiyan crawler`; representative HTTP user-agent: `YiyanBot`. User-agent strings can be copied, so corroborate with stronger evidence before granting trust.
- Respects robots.txt
- unknown
- Spoofing Risk
- YiyanBot has high spoofing risk because its user-agent can be copied and the current evidence is observation-based; do not trust it by name alone.
- Risk
- neutral
- Recommended Handling
- monitor
Rules and controls
- Robots.txt Snippet
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# Robots.txt behavior is unconfirmed. Monitor first and use stronger controls when enforcement is required. - Apache Rule
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RewriteCond %{HTTP_USER_AGENT} "YiyanBot" [NC] RewriteRule ^ - [F,L] - Nginx Rule
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if ($http_user_agent ~* "YiyanBot") { return 403; }