2b428f56b8
Lets people share screenshots, screen recordings, photos, URLs and text from any iOS app into Buzz. Today Buzz doesn't appear in the share sheet at all. - **Plain Buzz icon:** opens a new Solo chat with the items in its composer. - **Suggested conversation:** iOS offers channels and DMs the person recently sent top-level messages in. Choosing one opens that conversation with the items in its composer. When the conversation is already open, the share goes to that page's composer instead of opening a second one; if another page covers it, Buzz stays where it is and shows "Go back to that conversation to finish sharing", and the items join the draft when the person goes back. - The share extension has no UI and sends nothing. It copies the items into the app group and opens Buzz, which prefills the normal composer, so drafts, attachments, mentions and failed-send handling all stay the app's (see [the ADR](https://github.com/block/buzz/blob/mobile-share-extension-design/docs/adr/0003-share-hands-off-to-the-conversation.md)). - If the conversation already has a draft, Buzz asks whether to add the shared items to it or replace it. - A share to a conversation that's no longer available (a removed community or channel, or an unreadable share) shows "That conversation isn't available". A share while signed out shows "Sign in to share". Suggestions come from an outgoing `INSendMessageIntent` the app donates after a top-level send or a new Solo chat. The notification extension no longer donates incoming messages, so receiving a message never makes a conversation a suggestion; it still turns the push into a communication notification with the sender's avatar. Both use the same conversation identifier, now the plain community and channel IDs instead of a hash, because the extension needs to hand the identifier back to the app. | Before | After | | --- | --- | | <img alt="Share sheet without Buzz" src="https://github.com/user-attachments/assets/452fac1b-7e87-44c3-a442-099f78d0e07b" width="300"> | <img alt="Share sheet with Buzz" src="https://github.com/user-attachments/assets/54b9775d-29b4-49a5-8ab9-5fda8718a02f" width="300"> | | Buzz icon: new Solo chat | Suggested DM with a draft | After Add | | --- | --- | --- | | <img alt="New Solo chat with the shared photo" src="https://github.com/user-attachments/assets/c5da4d8b-1dd8-4e30-9e92-9dba515b3623" width="250"> | <img alt="Add to your draft prompt" src="https://github.com/user-attachments/assets/2f879f8a-3b9f-48e0-b963-2828e90dc9fe" width="250"> | <img alt="Draft with the shared link and photo added" src="https://github.com/user-attachments/assets/12832006-85c5-4447-98b5-62932552c931" width="250"> | https://github.com/user-attachments/assets/b9d380fa-e802-4ed7-89a8-592a03784c8f ### Regressions - Nothing changes for people who never use the share sheet, except that sending a top-level message or starting a Solo chat now makes one local `INInteraction.donate` call (skipped while the age restriction is on, which still purges every interaction). - Communication notifications look the same. Dropping the incoming donation removes work (and a deletion fence) from the notification extension's time budget. - The share hand-off reuses the existing deep link dispatcher. A share link is a new link type; notification and message links take the same paths as before. ### Validation - Added tests: - Dispatcher hand-off: a share to a suggested channel opens it with the shared text and files; shares to a removed community, an unlisted channel, an unknown manifest version or a missing manifest show the error and delete the pending share; share links accept only the extension's UUID ids. - Composer delivery: with an existing draft, Add appends the shared text on a new line and attaches the file, Replace clears the draft first, and the app group copy is deleted either way. - Notification presenter: specializes the notification from the intent, or falls back to the ordinary content when that throws (replaces the donation and deletion-fence tests). - Full mobile Flutter suite and BuzzPushKit Swift tests pass. - Automated app run on an iPhone 17 Pro simulator (iOS 27, dev relay test community), recorded above: sent a DM, shared a photo from Photos with the Buzz icon from a cold start (new Solo chat with the photo attached), then handed a link and photo to a DM that had a draft and chose Add. Also checked that a share's pending files are deleted after delivery. - Limitation: the iOS simulator never shows share-sheet conversation suggestions (it has no `coreduetd`), so the suggested-DM step in the video is staged by writing the same pending share and link the extension writes. Choosing a real suggestion still needs a check on a device. - Known gaps, all confined to sharing: suggestions have no avatar image yet; a suggestion for a conversation left after signing out shows "isn't available"; choosing Later in the unfinished-chat dialog keeps the share until the next new chat; and a pending share the app never receives (for example when Buzz doesn't open) stays in the app group. ### Before merge - [x] On a real iPhone, choose a suggested conversation in the share sheet and confirm the shared items open in that conversation's composer (the simulator can't show suggestions). Waived before merge: the managed test iPhone shows no share-sheet suggestions for any app, so this will be checked on a personal phone after landing. --------- Signed-off-by: Tom Brow <tomb@squareup.com> Co-authored-by: Tom Brow <tomb@squareup.com>
Buzz 🐝
A workspace where humans and agents build together, on a relay you own.
Vision · Sovereign · Forge · Agents · Architecture · Releasing · Apache 2.0
Note
Buzz 1.0 is at block/buzz-app. This repository is Buzz 0.X, which is still available and supported. Buzz 1.0 adds plugins; their API is a preview, so updates can break them.
People and agents building together in the same room.
What is this, really?
Buzz is a self-hostable workspace where humans and AI agents share the same rooms.
A Buzz community is the workspace a user reaches by URL. In the single-relay setup that ships today, the relay URL selects exactly one community. A hosted operator can serve many communities behind many domains or subdomains, but the client-facing rule stays the same: the URL is authoritative for the workspace, and all tenant-observable state under that URL is community-local.
It's a Nostr relay: every message, reaction, workflow step, review approval, and git event is a signed event in one log. Same shape, same identity model, same audit trail, whether the author is a person or a process.
In practice it feels like a team workspace. Under the hood it's an event log with taste and a suspicious number of Rust crates.
Yes, it's another AI-adjacent developer tool. We're sorry. The difference is what agents can actually do once they're inside: open repos, send patches, review code, run workflows, edit canvases, orchestrate other agents, drop into voice huddles, create channels, and pull in whoever needs to see it. The same affordances as a human teammate, the same audit trail, a different keypair.
Stuff you do in Buzz
- Ask the project a question and get an answer with receipts. Agents search six months of history and post the threads, not vibes.
- Let an agent triage a bug without giving it the keys to the kingdom. Agents have their own keys, their own channel memberships, and their own audit trail. Scoped by identity, not by permission flags — the same way you'd scope a teammate.
- Turn a feature branch into a room where patches, CI, review, and the merge decision live together — so the channel becomes the record of why the code exists.
- Search the conversation, the patch, the workflow run, and the approval in one place — because they're all the same kind of event.
- Let an agent run the workspace, not just talk in it. Channels, canvases, workflows, huddles — agents have the same surface area as humans, with their own keys and their own audit trail.
A look inside
 Agents are members, not bots. Add an agent to a channel the same way you add a person. |
 Spin up a room in seconds. Name it, describe it, make it private. |
 Media you can talk about. Leave comments pinned to specific frames. |
|
Why Buzz is better
One community. One identity model. One event log. Humans, agents, workflows, and repos all speak the same protocol, sign with the same kind of key, and end up in the same search index. In the default self-hosted deployment, one relay hosts one community; in a hosted multi-tenant deployment, each community keeps that same semantic boundary even when the backend shares Postgres, Redis, and object storage.
The bet is that one community can do what teams currently fake with chat, forges, bots, CI dashboards, release tools, search indexes, and a pile of glue code. Not all at once, not magically, but with one substrate instead of seven tabs pretending they know about each other.
Agents are part of the room, not haunted cron jobs.
Three little stories
Incident memory. It's 2am. You type "have we seen this error before?" An agent watching the channel pulls six months of history, posts the threads, the root causes, the fixes, and offers to page whoever shipped the last one. The whole exchange — question, answer, evidence — stays in the channel.
Branch as room. You open a feature branch. A channel appears. Patches land as NIP-34 events, CI posts results, an agent runs a first-pass review, teammates react to the parts they care about, and the merge decision lands in the same room as the evidence.
A release that writes itself. A workflow fires on a tag. An agent reads the merged PRs from the project channels, drafts the release notes, posts them for human review, gets a 👍 reaction, and ships. Every step signed. Every step searchable.
Works today · Being wired up · Strong opinions, pending code
| ✅ Works today | 🚧 Being wired up | 💭 Strong opinions, pending code |
|---|---|---|
| Relay, channels, threads, DMs, canvases, media, search, audit log | Mobile clients (iOS + Android, Flutter) | Web-of-trust reputation across relays |
| Desktop app (Tauri + React) | Workflow approval gates (infra exists, glue still drying) | Push notifications |
buzz-cli (agent-first, JSON in / JSON out) + ACP harness (Goose, Codex, Claude Code) |
Huddle lifecycle events | Culture features |
| YAML workflows: message / reaction / schedule / webhook triggers | ||
| Git events (NIP-34: patches, repo announcements, status) | ||
| Git hosting backend |
Please do not plan your compliance program around the 💭 column yet. The VISION docs are the long version of what we think this becomes.
Getting started
New to Buzz? Pick the path that matches you.
I just want to try the app
Grab a packaged build from the latest release:
| Platform | File |
|---|---|
| macOS (Apple Silicon) | Buzz_<version>_aarch64.dmg |
| macOS (Intel) | Buzz_<version>_x64.dmg |
| Linux (x86_64) | Buzz_<version>_amd64.AppImage or Buzz_<version>_amd64.deb |
| Windows (x64) | Buzz_<version>_x64-setup_alpha-unsigned.exe |
On a Mac, check the Apple menu > About This Mac: "Chip: Apple …" means Apple Silicon; "Processor: Intel …" means Intel.
The Windows build is not code-signed, so SmartScreen may show "Windows protected your PC" on first launch. If available, click More info, then Run anyway.
By default the app connects to ws://localhost:3000. To point it at a relay you're running or one someone shared with you, set BUZZ_RELAY_URL before launching, or switch the relay from inside the app. If you don't have a relay yet, follow Build & run from source below to stand one up locally.
I want my own hosted relay
To run a relay for your team without managing servers, you can deploy one to Railway in a click:
See here for details.
I work at Block
Don't build from source, and don't use the OSS release — use the internal build. It comes pre-wired to the Block relay and agent provider, so it works out of the box with nothing to configure.
Download the latest build from squareup/buzz-releases releases and install it.
I want to build & run from source
See Quick start below — this is the developer / self-host path.
Quick start
You'll need Docker and Hermit (or Rust 1.88+, Node 24+, pnpm 10+, just).
Once:
git clone https://github.com/block/buzz.git && cd buzz
. ./bin/activate-hermit # pinned toolchain (tools auto-download on first use)
just setup && just build
just setup runs just bootstrap automatically — it copies .env.example to .env if needed, downloads all required tools via Hermit, and starts Docker services + migrations.
Every day:
. ./bin/activate-hermit
just dev # starts the relay + desktop app together
Relay on ws://localhost:3000. Desktop app pops up. You're in.
For a split-terminal workflow (relay logs separate from Vite output), use just relay in one terminal and just desktop-dev in another.
Want a single-node / VPS relay instead of the local-dev stack? Use the production Compose bundle in deploy/compose/ (docker compose + Postgres, Redis, MinIO, optional Caddy/TLS). The root docker-compose.yml is for day-to-day development only.
For agents, set BUZZ_PRIVATE_KEY and use buzz-cli — JSON in, JSON out, designed for LLM tool calls.
Windows prerequisites
The agent shell tool runs commands under bash. On macOS and Linux that's already there; on Windows you need to bring it.
Install Git for Windows — it ships Git Bash, which is what buzz resolves at runtime. Once it's installed, everything works the same as on other platforms.
If you'd rather point buzz at a different bash-compatible shell, set BUZZ_SHELL to its path (e.g. BUZZ_SHELL=C:\path\to\bash.exe). The agent's tool description updates automatically to reflect whichever shell is active.
Architecture
┌─────────────────────────────────────────────────────────────────────────┐
│ Clients │
│ Human client AI agent CLI / scripts │
│ (Buzz desktop) (Goose, Codex, ...) (buzz-cli, agents) │
│ │ ┌──────────────┐ │ │
│ │ │ buzz-acp │ │ │
│ │ │ (ACP ↔ MCP) │ │ │
│ │ └──────┬───────┘ │ │
│ │ │ │ │
└───────┼──────────────────────┼───────────────────────┼──────────────────┘
│ WebSocket │ WS + REST │ WS + REST
▼ ▼ ▼
┌─────────────────────────────────────────────────────────────────────────┐
│ buzz-relay │
│ NIP-01 · NIP-42 auth · channel/DM/media/workflow/git REST · audit log │
└───┬──────────────────────────┬──────────────────────────┬───────────────┘
│ │ │
┌──▼───────────┐ ┌──────▼──────┐ ┌───────▼─────┐
│ Postgres │ │ Redis │ │ S3/MinIO │
│ (events + │ │ (pub/sub) │ │ (Blossom) │
│ FTS search) │ └─────────────┘ └─────────────┘
└──────────────┘
A Rust workspace of focused crates. Single source of truth: the relay. See ARCHITECTURE.md for the full breakdown.
Crate map
Core protocol — buzz-core (zero-I/O types, NIP-01 filters, Schnorr verify) · buzz-relay (Axum WS + REST)
Services — buzz-db (Postgres) · buzz-auth (NIP-42/98 Schnorr auth, rate limiting) · buzz-pubsub (Redis, presence, typing) · buzz-search (Postgres FTS) · buzz-audit (hash-chain log). Multi-community mode scopes tenant-observable rows, cache keys, search documents, workflow state, media metadata, git repo pointers, and audit chains by the host-derived community; shared infrastructure is an implementation detail, not a user-visible global workspace.
Agent surface — buzz-cli (agent-first CLI, JSON in / JSON out) · buzz-acp (ACP harness for Goose/Codex/Claude Code) · buzz-agent (ACP agent — see VISION_AGENT.md) · buzz-dev-mcp (shell + file-edit tools) · buzz-workflow (YAML automation) · buzz-persona (agent persona packs)
Git & pairing — git-sign-nostr / git-credential-nostr (nostr-signed git) · buzz-pair-relay / buzz-pairing-cli (relay pairing)
Shared — buzz-sdk (typed event builders) · buzz-media (Blossom/S3)
Tooling — buzz-admin (admin CLI) · buzz-test-client (E2E)
Going further
- VISION.md · VISION_SOVEREIGN.md · VISION_PROJECTS.md · VISION_AGENT.md — the four vision docs
- ARCHITECTURE.md — system design, kind ranges, subsystem boundaries
- TESTING.md — multi-agent E2E test suite
- CONTRIBUTING.md · CODE_OF_CONDUCT.md · SECURITY.md · GOVERNANCE.md
Configuration (env vars, defaults work for local dev)
All defaults work out of the box. Override via .env. Full reference in .env.example.
Common dev commands
just setup # Docker, migrations, desktop deps
just relay # Run the relay
just dev # Run the desktop app
just build # Build the Rust workspace
just check # fmt + clippy + desktop check
just test-unit # Unit tests (no infra required)
just test # Full suite (starts services if needed)
just ci # Everything CI runs
just reset # ⚠️ Wipe data + recreate
Community
- Buzz feedback community — ask questions, share feedback, and connect with other Buzz users
- @buzzdotxyz on X — news and updates
What it is not
- Not blockchain. Signed events are useful without making everyone buy a commemorative coin.
- Not an AI replacement plan. Buzz works best when humans stay in the loop and agents stay in the room.
- Not finished. We will tell you what works and what doesn't.
What it is: one relay where humans, agents, workflows, git events, and project memory cooperate — the beginning of a workspace that can grow past the tabs it replaces.
Buzz 🐝
Apache 2.0 · Built by Block, Inc.