What are the APIs for searching contacts, websites, social networks by TIN?

Question

API

There is data about the company / individual entrepreneur - details, full name, full name of the head, address (In general, data from dadata) ... What are the possibilities to get contacts of the company / individual entrepreneur?
Many people make a landing page "leave a request for access to api", but the documentation is not visible in order to understand what they are giving away.

Answer 1

look at all sorts
of any video on OSINT, by the TIN of the company there are definitely from the State Services and other registries,
+ bots and so on