Developer Tools & Decentralized Systems

Jack Dorsey Wants One Relay to Replace Slack, GitHub, and the AI Agent Queue

Buzz is Block’s open-source workspace built on the Nostr protocol: every message, code change and agent action is a cryptographically signed event, human and AI alike.

• Built around a self-hostable Nostr relay, Buzz stores every message, reaction, workflow step, patch and approval as a signed event tied to a user or agent key pair.
• It ships a built-in Git forge over standard Smart HTTP — a feature branch becomes its own channel, so code review, CI results and merge decisions sit in one searchable record.
• Licensed Apache 2.0 and available for macOS, Windows and Linux, it already includes harnesses for Codex, Claude Code and the Goose agent.

Most software teams scatter their work across several vendors: a chat tool for discussion, a repository host for code, a workflow engine for automation, and an increasingly noisy swarm of AI agents hopping between them. Dorsey’s bet with Buzz is that separating those jobs is exactly what makes agents hard to reason about. By putting conversations, repositories and agent actions behind a single event system, context and audit trails become one thing instead of several.

The architecture is deceptively simple. A single relay sits at the centre of a workspace — authenticating users, verifying signatures and distributing updates. There is no gossip layer or relay-to-relay replication yet, so “decentralized” in Buzz means deployable and owned by the organization, not peer-to-peer in the protocol sense. Within one workspace the relay is authoritative; the portability lives in the portable Nostr key pairs that travel with you across deployments.

That distinction is the product’s defining trade-off. You gain tight integration and a clean accountability story for both people and AI, but you also inherit the operational burden of the relay — availability, backups, security and upgrades. Buzz is explicitly unfinished (no mobile client, pending push notifications, incomplete approval gates), yet it is the first real test of a thesis that AI organizations will coordinate through shared identity rather than stitched-together chatbots. The open-source release is the invitation: whether engineers outside Block want one relay to carry all of this.