That's a good joke
That seem to be bots for those messengers. There are hundreds or even thousands of bots for messengers nowadays. Do you think they all made an agreement?
There is no need to make an agreement with the services. At least telegram doesn't require any (I know that from my own experience).

But I also have some doubts concerning Facebook. Facebook announced its blocking cryptos.
Devs, your wallet bot on Facebook can face banning.