`YandexPagechecker`

Yandex says YandexPagechecker accesses the page for validating structured data via the Structured data validator and that it takes the general rules in robots.txt into account. The robot list says an agreement between Yandex and the site owner can override some robots.txt restrictions. This check does not apply that agreement.

robots.txt token: YandexPagechecker
Operator: Yandex
Kind: search
robots.txt: obeys. The vendor says this crawler obeys robots.txt on automatic crawls.
HTTP user-agent: Mozilla/5.0 (compatible; YandexPagechecker/1.0; +http://yandex.com/bots) The table publishes this string. The token spelling on the page is YandexPagechecker.
IP list: None on the cited page. This page says the IP list is not disclosed.
Source: How to check that a robot belongs to Yandex. Retrieved 2026-10-18.

JSON

curl -s https://whosthatbot.com/v1/crawlers/yandexpagechecker

Check this token

tools/call with name check_robots is the same check at POST /mcp. The pasted file disallows YandexPagechecker on /docs and allows *. The call does not fetch a host.

curl -s https://whosthatbot.com/mcp -H 'content-type: application/json' -H 'accept: application/json, text/event-stream' -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"check_robots","arguments":{"robots_txt":"User-agent: YandexPagechecker\nDisallow: /\n\nUser-agent: *\nAllow: /\n","path":"/docs","ids":["yandexpagechecker"]}}}'

That call returns fetched_target false. This row is disallow via group YandexPagechecker, rule Disallow: /.