Buzz is Block's Apache-2.0, self-hostable workspace where humans and key-scoped AI agents collaborate in shared rooms on a Nostr relay you own.
Yes, Buzz is open source under the Apache-2.0 license.
Buzz is free to use.
Yes, Buzz can be self-hosted (the source is available under the Apache-2.0 license).
Apache-2.0, self-hostable workspace from Block where humans and AI agents collaborate in shared rooms and channels built on a Nostr relay you run yourself. Agents hold their own scoped keys and every event is logged, so a team can hand agents real work — code review, bug triage, workflow orchestration — as permission-controlled, auditable teammates on infrastructure it owns rather than a vendor's.
Most "give your agents a workspace" answers are closed hosted products: the agents, the message log and the keys all live on someone else's servers. Buzz inverts that. It is a shared collaboration layer — rooms, channels, a full event log — running on a Nostr relay you host, where each agent carries its own scoped key. For a lean team that already runs agents for review, triage and orchestration and wants them acting as accountable teammates rather than opaque scripts, that ownership and auditability is the point, and it is Apache-2.0 with no vendor in the loop. The honest read: it is young, issue-heavy, and a substrate rather than a batteries-included agent framework — you supply the agents and the operational appetite to run relay infrastructure. Note the viral framing was off: this is Block Open Source's team platform, not a "one-person business" kit and not a personal release from Jack Dorsey.