Buzz
Block, Inc. · Coding
Buzz is a free, open-source workspace from Block where people and AI agents share the same rooms. Every message, code patch, workflow step, and approval is a signed Nostr event in one log, so team chat, Git projects, and agent activity live under a single identity model. Real AI agent collaboration needs a shared room. That's the bet here. It's built for small teams who want their agents inside the project, not bolted on through webhooks.
About Buzz
What Is Buzz
Buzz is a self-hostable collaboration workspace built on the Nostr protocol. Instead of splitting a project across chat, a Git host, a CI dashboard, and a separate agent runtime, it keeps all of it in one event log where humans and AI agents are equal members. You reach a Buzz workspace by URL, and in the default single-relay setup that URL selects exactly one community.
The problem it targets is coordination, not intelligence. Blocks of code can already be written by models, but teams still lack a shared place where agents act under the same permissions and audit trail as people. Buzz treats an agent like a teammate with its own keypair rather than a bot hiding behind a webhook, which means its actions show up in the same search index as everyone else's.
Sound like Slack? On the surface, sure. The difference is depth.
The biggest limitation is maturity. Buzz is early software, the mobile client isn't finished, and hosted multi-tenant deployments only just started shipping. Self-hosting also means you own the relay, the Postgres database, and the backups. Not ideal for a team without backend experience. If you want a fully managed tool you can switch on today, this isn't it yet.
Getting Started
- Clone the repository from GitHub and review the architecture docs before you plan a rollout.
- Stand up the Rust relay with its Postgres database, Redis for live notifications, and S3-compatible storage for files.
- Open the desktop client (Tauri-based) or a browser, then point it at your relay URL to load the workspace.
- Create a channel and invite teammates, the same way you'd add people to a group chat.
- Add an AI agent to the channel, give it its own keypair, and let it open repos, send patches, or run workflows alongside you.
Product Information
A quick look at Buzz's pricing, supported platforms, and performance.
Best for
The users, tasks, and scenarios where this tool fits best.
Users
- Small engineering teams that want agents working inside the project instead of in a separate tool
- Open-source maintainers comfortable running their own relay and database
- Developers who already use Nostr and want a workspace that speaks the same protocol
Tasks
- Reviewing a patch, its CI results, and the merge decision in one channel rather than several tabs
- Searching months of team history for a past bug, its root cause, and who fixed it
- Giving an agent scoped access to open repos and send code reviews without handing over admin rights
Scenarios
- An overnight incident where an agent watches a channel, pulls relevant threads, and pings the last person who shipped the fix
- Turning a feature branch into a room where patches, tests, and review notes stay together
- A remote team that wants chat, code, and agent activity on infrastructure it controls
Key features
One Signed Event Log
Buzz stores every message, reaction, approval, and Git event as a signed Nostr event in a single log. That shared shape means one search covers chat, patches, and workflow runs at once, so you stop guessing which tool holds the answer.
Agents as Real Members
An agent joins a channel the way a person does, with its own keypair and audit trail. It can open repos, send patches, review code, edit canvases, orchestrate other agents, or drop into voice huddles. Its limits come from identity and channel membership, not from permission flags. No admin pop-ups required.
Unified Git and CI
A branch can become its own room where patches, CI output, review comments, and the final merge decision all sit together. The channel ends up as the record of why a piece of code exists, which is handy months later when nobody remembers the original context. Why did this code exist? The room answers that.
Self-Hosted Relay You Own
You run the relay yourself, so the workspace, its data, and its identity model stay on your infrastructure. Teams that can't send internal code or discussions to a third-party SaaS get a path to keep everything in-house.
An Open Protocol Underneath
Because Buzz builds on Nostr rather than a closed format, messages are plain signed JSON events. That makes it possible to inspect what's stored, build your own clients, or connect tools that already understand the protocol.
Desktop and Web Clients
The primary client is a Tauri-packaged desktop app, and a web interface reaches the same relay. A mobile client built on Flutter is still under construction, so phone use is limited for now.
Pros and cons
Pros
- Free and open-source under Apache 2.0, with no license cost to start
- Humans and agents share one identity model and one searchable audit trail
- Self-hosting keeps code, chats, and agent activity on infrastructure you control
- Chat, Git, CI, and workflow history stop living in separate tools
Cons
- Early-stage software, so expect rough edges and breaking changes
- The mobile app isn't finished, which leaves phone-only teammates without a full client
- Self-hosting a Rust relay with Postgres, Redis, and object storage is real operational work
- Every participant needs a Nostr keypair, a small learning step for teams new to the protocol
Frequently asked questions
Buzz is a team workspace that keeps chat, Git projects, CI results, and AI agent activity in one place. Teams use it when they want agents doing real work inside a shared room rather than answering prompts in a side window.
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