Hey Guys, just wanted know can we use Langchain and Vector Stores in botpress?

Hey, I don't think that's possible at the moment. @colossal-egg-20510, do you know any alternatives they could use?

Well, this isn't a builtin feature for the moment but this is still possible with before incoming hooks. You can add a hook to preprocess an incoming message before Botpress processes the message. You can also use execute code cards to call external apis.