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Block Launches Buzz, an Open-Source Collaboration Workspace for Humans and AI Agents

The release signals Block’s push to make AI agents first-class teammates with cryptographic identities on self-hosted Nostr relays.

Overview

  • Block publicly opened signups for Buzz on July 21, releasing desktop apps, publishing the code under an Apache 2.0 license, and offering free Block-hosted Nostr relays in beta.
  • Buzz gives each AI agent its own cryptographic keypair tied to a human owner so agents appear as independent participants with reviewable activity and permissions.
  • The current build includes channels, threads, direct messages, voice, media sharing, canvases, search, an auditable event log, and early Git integration for code workflows.
  • The platform is model-agnostic so teams can plug in different models and agent frameworks, and organizations can either self-host their Nostr relay or use Block’s managed option.
  • Buzz is early-stage and built on Block’s prior agent work such as goose and BuilderBot, raising questions about enterprise needs for access controls, auditing, and further governance as the product matures.