I received news about the chat API changing in a couple of months from another chat user and API library developer, but I can't find any mention of it on my own now. So I went to look at the prime location for that kind of info, and it doesn't even have a chat section. Please fix :p
1 Answer
There is no formal Chat API and therefor no page and that hasn't changed since the early days
All libraries that exist out there are based on reverse engineering the network traffic and master.js
Some bits get documented, for example:
Because of the closed nature of chat that sometimes causes issues, for example when the html markup was changed to support the mentoring program on Stack Overflow. Some chat bots were completely lost for a few hours.
I'm not aware of announced changes in the Chat software but I do know that the upcoming retirement of Open ID might cause issues. I don't think authentication is technically part of chat or its internal API but it is heavily depended on Universal login so any change in that flow, does impact the reverse engineered chat libraries.
It is brought to the attention of the SE Dev team so I'm sure we'll find a solution in cooperation with them.