Technically, you can develop a channel for the Matrix chat protocol. It should be straightforward if you are familiar with Node.js/Typescript. In the Hexabot.ai website there is an extension library where can download and share extensions : https://hexabot.ai/extensions

You could use the Messenger channel as an example to build your own channels : https://hexabot.ai/extensions/67272f907ddd71f5fb2f0cd5

Awesome, let me know how it goes!