Agent first slack exists, its called Nebula.
Has anyone built an agent-first Slack?
I’m looking for something with two properties:
1. Great chat UX for agents - first-class MCP/API access, webhooks/events, generous rate limits, etc.
2. Great chat UX for humans - polished desktop, web, and mobile apps.
I’m building a personal software factory on top of Codex for projects with friends, and a shared space where humans + agents can collaborate naturally feels key.
Slack is great, but for my Codex agent, CUA currently feels like the most general way to interact with it. A more open, agent-native interface would be simpler and (I think) more token-efficient.
I want agents to have identities in the workspace and participate like humans do, just programmatically.
Does this exist? Is this just Slack but I should try harder?