What is YandexAdditional? AI crawler guide
YandexAdditional is a crawler or fetcher associated with Yandex. See source-graded user-agent, robots.txt, verification, and observation guidance.
What is YandexAdditional?
YandexAdditional is a documented Yandex crawler or fetcher. Yandex crawler token for data used in YandexGPT quick answers and additional analysis.
Evidence status
| Field | Value |
|---|---|
| Evidence | Officially documented |
| Lifecycle | Active |
| Purpose | search |
| robots.txt posture | honors |
| Source checked | 2026-06-11 |
Documented user-agent
YandexAdditional
Whether to allow YandexAdditional is a policy call. Either way, check which AI platforms actually send you human visitors before assuming crawl volume equals value.
robots.txt allow example
User-agent: YandexAdditional Allow: /
robots.txt block example
User-agent: YandexAdditional Disallow: /
What the rule can and cannot do
Robots.txt expresses an access policy to compliant automated crawlers. It does not authenticate the sender, remove content already collected, or guarantee that a model will use or not use content.
How to verify a request
- Match the complete documented user-agent where one exists. A match is only a clue.
- Look for operator-published IP ranges, reverse DNS, or signed-request guidance. None is attached to this record.
- Keep the observed request, operator documentation, and any inference as separate fields.
JavaScript behavior
The cited operator material does not verify JavaScript rendering. Serve useful HTML before client-side JavaScript where possible.
Related bots
- YandexAdditionalBot: Another Yandex search crawler to compare.
- xAI-SearchBot: Also tracked as a search crawler.
- Bravebot: Also tracked as a search crawler.
- PetalBot: Also tracked as a search crawler.
- iaskspider/2.0: Also tracked as a search crawler.
- Amzn-SearchBot: Also tracked as a search crawler.
- Googlebot: Also tracked as a search crawler.
- MistralAI-Index: Also tracked as a search crawler.
- Bingbot: Also tracked as a search crawler.
- Robots.txt: Robots.txt is the control file used to allow or block YandexAdditional.
- AI Crawlers: YandexAdditional is a concrete crawler example for this concept.
Frequently Asked Questions
What is YandexAdditional?
YandexAdditional is a officially documented crawler or fetcher record associated with Yandex.
What user-agent does YandexAdditional use?
YandexAdditional. Check the evidence status before attributing a matching request.
Can YandexAdditional be blocked in robots.txt?
The record identifies YandexAdditional as the token to review. Robots.txt is a request policy, not proof of model use or non-use.
How can I verify a YandexAdditional request?
Treat the user-agent as a clue and look for operator-published IP, reverse-DNS, or signature guidance.
Data & Sources
- Yandex documentation - Primary source for YandexAdditional crawler details.