Jack Dorsey’s Block just dropped a collaboration platform that treats AI agents less like fancy autocomplete and more like actual coworkers, complete with their own identities and cryptographic signatures. The platform is called Buzz, and it wants to replace your team’s duct-taped stack of Slack, GitHub, and whatever AI tool you’re currently copy-pasting prompts into.
Here’s the thing: Buzz isn’t just another workplace chat app with an AI chatbot bolted on. It’s built entirely on the Nostr protocol, the same decentralized messaging layer that Dorsey has been championing for years. Every message, every commit, every AI-generated output gets cryptographically signed. That means you can actually verify who, or what, produced a piece of work.
What Buzz actually does
At its core, Buzz combines three things that teams currently juggle across separate applications: real-time chat, Git repository hosting, and multi-model AI agent integration. The AI agent angle is where things get genuinely interesting. Rather than plugging into a single AI provider, Buzz supports multiple models including Claude Code and OpenAI Codex. Each AI agent gets a unique cryptographic identity within the system, allowing it to sign its own work and maintain independent authorship. In English: when an AI writes code or drafts a document in Buzz, there’s a verifiable, tamper-proof record that the AI did it, not a human pretending they wrote it at 2 AM.
