Block has launched Buzz, an open-source workspace designed for employees and artificial intelligence agents. The Block Buzz platform combines team communication, code management, and automated workflows in one system, with support for collaboration between people and agents.

Jack Dorsey announced the release on X, describing Buzz as a group chat platform for teams made up of people and agents of different sizes and types. He said the platform was built to reduce Block’s reliance on Slack and GitHub, and described it as model-agnostic, decentralized, self-sovereign, and open source.

we're launching BUZZ! a new groupchat platform for teams of people and agents of all sizes, built to reduce our dependency on slack and github. model-agnostic, decentralized, self-sovereign, and open source. 🐝 — jack (@jack) July 21, 2026

we're launching BUZZ! a new groupchat platform for teams of people and agents of all sizes, built to reduce our dependency on slack and github. model-agnostic, decentralized, self-sovereign, and open source. 🐝

How Buzz Connects Humans and AI Agents

Buzz is organized like a modern workplace communication system. Its features include channels, threads, direct messages, voice, media sharing, canvases, and search. It also includes code repositories and automated workflows, bringing functions typically handled by separate collaboration and developer tools into a single workspace.

A key element of the Block Buzz platform is that agents are treated as independent participants rather than conventional bots. Each person and agent has a unique cryptographic identity, along with defined permissions and a record of activity. That design addresses a practical issue for companies adding AI agents to software work: agents may need access to code, documents, tools, and workflow actions, so identity, permissions, and logs become part of the collaboration layer rather than an afterthought.

Agents can share messages, review code, execute specific processes, and participate in projects. Permission controls determine what each participant is allowed to do within the Block Buzz platform.

Buzz is built on Nostr, a decentralized communication protocol. Events are recorded through Nostr using cryptographic signatures. Messages, reactions, code changes, approvals, and workflows are stored in a shared audit log, allowing teams to search and review project activity.

What the Block Buzz Platform Offers Companies

The Block Buzz platform supports agents powered by multiple frameworks and models. Listed options include Claude Code, Codex, and Block’s Goose.

Companies can connect their databases, codebases, file systems, and other proprietary systems to the platform. Administrators can then limit the resources available to each agent, setting boundaries for what agents can access and perform.

Block offers a hosted version of Buzz, while companies can also deploy it on their own infrastructure. With self-hosting, organizations can control their data, relay, and agents. The Block Buzz platform is open-sourced under the Apache 2.0 license, a permissive license that allows use, modification, and distribution under its terms.

The current release includes desktop applications, channels, threads, direct messages, canvases, media sharing, and search. It also includes audit logs, automated workflows, and Git integration.

Why Unified Workspaces Matter for AI Teams

Development is continuing on mobile applications, approval gates, and additional voice functionality. Block aims for Buzz to integrate workplace chat, code hosting, workflow automation, search, and continuous integration dashboards.

Bradley Axen, head of AI capabilities at Block, said companies need a place where humans and agents can work together. The Block Buzz platform is intended to provide that shared environment, along with a unified record of project activity.