The /v1beta/chat/completions endpoint can be used to connect chat-model with Slack to provide a chatbot. However, for a smoother integration experience, it is recommended to use something compatible with OpenAI's API, such as llama.cpp's server example, especially for non-tabby use cases. Tabby's API is designed around Tabby's client/chat playground. If you prefer an all-in-one solution, you can try using Tabby with Slack.