We have the opposite problem. We've tried this slack integration (first with NanoClaw, then Hermes, but now just building our own), and we actually want the OPPOSITE.

In private context, I want to have a per-person conversation with durable context for that person's private chats. I also want that person's permissions to extend. Like contractors in our slack should only be able to ask and get back information about clients that they've been attached to, not our entire knowledgeable.

And we've implemented ALL that, but just with a lot of custom code. We've put in interceptors that put in per-user keys into the MCP connection so only certain tools are even exposed, etc.