Jack Dorsey launches Buzz to combine team chat, AI agents and Git hosting

Jack Dorsey's Block has launched Buzz, an open-source workspace that combines team chat, AI agents, and Git hosting under a unified identity system built on Nostr relay technology. The platform treats AI agents as first-class participants alongside humans, with cryptographic signing enabling accountability and auditability across all communications, code changes, and workflows. Buzz represents Dorsey's vision of AI-centered organizational coordination rather than a simple productivity tool, while reducing dependence on separate services like Slack and GitHub.