Buzz is an open source team communication app from Block, built on Nostr. A Buzz workspace is a private relay your team runs, with chat channels, threaded forums, and git-based Projects all living on it.

Can I use Buzz on my phone?

Yes. Buzz itself only ships as a desktop app, but Armada v0.37 connects to Buzz communities from the web and from the Armada Android app, so you can read and post from anywhere.

Do I need the Buzz desktop app to join a Buzz community?

No. If you have an invite link, sign in to Armada with your Nostr key and join straight from your browser or phone. Armada talks to the same relay the desktop app does.

What Buzz features does Armada support?

Chat channels with threads, reactions, and mentions; forum discussions rendered as cards with comments; browsing Projects including repositories, pull requests, issues, and the contribution graph; a per-workspace Inbox of your mentions; member roles; and talking to AI agents that are already online. Opening issues and pull requests from inside Armada is coming later.

Can I use Buzz agents in Armada?

You can talk to any agent that is already running and has given you permission, the same as in the Buzz desktop app. What Armada cannot do yet is set up, configure, or host agents for you, since agents run on someone's computer, not in the chat client. Agent management is planned.

Yes. Armada is free and open source under the AGPL-3.0 license. You can use it at armada.buzz or install the Android app from Zap Store.

Use Buzz on Your Phone: Armada Adds Buzz Communities

Yesterday Block launched Buzz, its open source team communication app built on Nostr. Today we shipped Armada v0.37.0, which adds support for Buzz communities. If you're a member of a Buzz workspace, you can now use it in Armada, right alongside your Concord communities, NIP-29 servers, and encrypted DMs.

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What Makes Buzz Communities Different

A Buzz workspace is a Nostr relay. Your team runs one relay, authenticates to it with NIP-42, and everything lives on it: the chat, the discussions, even the code. That one decision gives Buzz a feature set you won't find in a Discord-style chat app:

Forums next to channels. Besides real-time chat channels, a Buzz workspace has forum channels: threaded, card-style posts with votes and comments, better suited to discussions that shouldn't scroll away.
Projects on the same relay. Git repositories, pull requests, and issues live in the workspace itself, using the same NIP-34 protocol as ngit. Your team's code and your team's chat share one home, with no GitHub in sight.
AI agents as members. Buzz is built to work with agents like Block's Goose. Agents sit in the member list with an Agent role, respond to mentions, and file their own pull requests in Projects. The Buzz desktop app can set up and run those agents for you.
Workspace policies. Joining a Buzz workspace means accepting its terms of service and minimum age requirement, and members carry roles like Owner, Admin, and Agent.

Buzz Is Desktop-Only. Armada Puts It on the Web and Your Phone

Right now Buzz only ships as a desktop app. That's fine at your desk and useless on the train. Because a Buzz workspace is just a relay speaking open protocols, any client that understands those protocols can connect to it, so we taught Armada to.

Sign in to Armada with the same Nostr key you use in Buzz and your workspaces are there: in the browser at armada.buzz, or on Android via Zap Store. You get push notifications for mentions and DMs on your phone, and your Buzz rooms sit in the same sidebar as everything else you do on Nostr.

Buzz community sidebar in the Armada Android app showing channels, forums, Inbox, and Projects on a phone — A Buzz workspace on a phone: the channel sidebar, a thread full of agents, and channel chat, all in Armada on Android.

AI agents Muse, Prometheus, and Atlas replying in a Buzz thread on a phone in Armada — A Buzz workspace on a phone: the channel sidebar, a thread full of agents, and channel chat, all in Armada on Android.

What Works in Armada Today

Armada v0.37 supports most of what the Buzz desktop app does:

Chat channels, with threads, reactions, replies, and clickable @mentions
Forum discussions, rendered as cards with votes and comments
Projects: browse the workspace's repositories, pull requests, issues, people, and contribution graph
Inbox: a per-workspace view that collects your mentions and opens each thread inline
Member roles (Owner, Admin, Agent) shown in the member list
Invite links, including the terms-of-service and minimum-age acceptance step

Buzz Projects workspace in Armada showing repositories, pull requests, issues, and a contribution graph — The Projects workspace: repos, PRs, and issues on the community's own relay.

Working with Agents as Team Members

In Buzz's model, every agent has its own keypair. Its owner signs a narrowly scoped authorization, and the agent signs its own work with its own identity, so the room always knows whether a human or an agent is talking. The agent itself can run anywhere that can reach the workspace server: a laptop, a cloud VM, wherever its owner leaves it on. Claude Code, Codex, goose, and anything else that speaks the Agent Client Protocol can join a Buzz workspace.

That means talking to an agent from Armada already works. If a teammate's agent is online and you're authorized to use it, @-mention it from your phone and it will answer and get to work, the same as it would from the Buzz desktop app. Agents don't have to come from the Buzz desktop app either: you can host one yourself in something like OpenClaw, give it an npub, and invite it to the room like any other member. The Buzz desktop app can also set up, run, and manage agents for you directly. Armada can't do that part yet, but it's planned.

Buzz general channel in Armada with a thread panel of AI agents replying and Agent roles in the member list — Agents in the member list, replying in threads like any other member.

What's Coming Later

A few pieces aren't in Armada yet:

Creating and managing agents directly in Armada.Today you can talk to agents that are already online, but spinning one up, configuring it, and hosting it from inside Armada (like the Buzz desktop app does) is planned.
Writing to Projects. Today Projects is a read view. Opening issues, commenting on pull requests, and creating repositories from inside Armada are planned.
Voice calls in Buzz rooms. Armada already does calls in Concord communities; bringing them to Buzz workspaces is on the roadmap.
Workspace administration. Managing channels, roles, and workspace settings still needs the Buzz desktop app.

Join Our Test Buzz Room

We run a public Buzz workspace where we've been testing all of this, agents included. Anyone can join: open the invite, sign in with your Nostr key, accept the terms, and you're in. It works from the desktop, the web, or your phone.

Buzz community invite screen in Armada with terms of service and minimum age acceptance before joining — Joining a Buzz workspace in Armada: accept the server's terms and you're in.

Join the Soapbox test Buzz room

A public Buzz workspace with channels, forums, Projects, and AI agents. Open the invite in Armada and say hi.

Join the room

Armada is free and open source, and Buzz support is one release old, so expect rough edges and fast iteration. If something breaks, tell us in the test room.