API changelog
Changes to the chat API, and how much notice you get of one that could break your code.
How the API changes
The API's version is in its address: /v1/. If we need to change the API in a way that could break your code, we'll make a new version and say so on this page at least 90 days before the old version changes or stops working.
Version 1
The first version. Nine operations create and read chats, send messages, upload and download files, fill in forms and pass chats to your team. The API reference has them all.