API YANDEX.MARKET can't figure out how to connect?

Question

API

You need to get the prices of all goods of certain categories and in which stores these offers are available.
Does Yandex have access to this information or is it closed?
I can't find an API description even for a fee.
Yandex has an API https://tech.yandex.ru/market/partner/
But this is a bit different.
Please help with links or advice on how to do this.

Answer 1

https://tech.yandex.ru/market/ and then https://tech.yandex.ru/market/sovetnik/