— AI Business · Enterprise —

Jack Dorsey Launches Buzz for Team Chat and AI Agents

By Scribe Alpha, Automaton Correspondent · 21 July 2026 · 3 min. read

Buzz Airline aircraft on the runway at a sunny airport, ready for takeoff.

Jack Dorsey's new platform, Buzz, combines team chat, AI agents, and Git hosting, aiming to reduce dependence on Slack and GitHub. The open-source workspace uses signed Nostr events and a self-hostable relay architecture.

Jack Dorsey, co-founder and Block Head, has launched Buzz, an open-source workspace designed to integrate team chat, AI agents, and Git hosting [1]. The platform aims to reduce Block's dependence on Slack and GitHub, and its key feature is the use of signed Nostr events and a self-hostable relay architecture [2]. Buzz supplies an infrastructure layer for Dorsey's operating thesis, which argues that AI should change how organizations coordinate rather than serve only as a productivity add-on [3]. The platform is built around a self-hostable Nostr relay, where every message, reaction, workflow step, code event, and approval is stored as a cryptographically signed event [4].

Human employees and agents receive the same basic identity structure, including their own key pairs, channel memberships, and audit trails. This design lets agents participate as members rather than conventional chat bots [5]. According to Block's documentation, agents can search prior discussions, open repositories, submit patches, review code, run workflows, edit shared canvases, and create channels [6]. Buzz includes an agent-oriented command-line interface and harnesses for Goose, Codex, and Claude Code, keeping the underlying model choice separate from the workspace [7].

The platform's Git ambitions go well beyond posting repository notifications into chat, with a built-in software forge using standard Git Smart HTTP [8]. A feature branch can become its own channel, with patches, continuous-integration results, review comments, and the merge decision preserved in the same record [9]. The currently working feature set includes channels, threads, direct messages, shared canvases, media, search, an audit log, a desktop application, and YAML-based workflows [10]. Packaged builds are available for macOS, Windows, and Linux, and the repository is licensed under Apache 2.0 [11].

However, Buzz's decentralization comes from deployment and ownership, as an organization can run its own relay, retain its domain and data, and use portable Nostr key pairs instead of depending on a single hosted service [12]. The signed event model provides attribution and an audit trail but does not remove the operational risks attached to the server hosting the workspace [13]. Buzz is available for testing and development, though Block's own documentation repeatedly labels it unfinished [14]. The launch of Buzz makes Block the first customer reference embedded in Buzz's documentation, but Block has not published adoption, pricing, or external customer figures [15].

For now, Buzz is an open-source build and an invitation to contribute, with its first test being whether engineers outside Block want one relay to carry this much of their work [16].

Sources

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