cb9701cd30
Buzz renders one card per `kind:30617`, so a project spanning several repositories has no representation. [NIP-MP](https://github.com/block/buzz/pull/3163) defines `kind:30621` as an addressable container holding a group's name, description, channel binding, and member coordinates. This adds the kind to `buzz-core` and its structural validation to the relay ingest path. ## Event shape ```json { "kind": 30621, "tags": [ ["d", "platform"], ["name", "Platform"], ["description", "Relay, desktop, and mobile."], ["a", "30617:<owner-a-hex>:buzz"], ["a", "30617:<owner-b-hex>:buzz-infra"], ["buzz-channel", "<channel-uuid>"], ["buzz-visibility", "listed"] ] } ``` ## Validation at ingest | Rule | Behavior | |------|----------| | `d` tag | exactly one, non-empty (length already bounded by the generic `D_TAG_MAX_LEN` check) | | member `a` tag arity | exactly 2 or 3 elements per NIP-01's `a` tag grammar; a 4th element has no defined meaning and is rejected | | member `a` tag coordinate | must parse as `30617:<lowercase-64-hex-owner>:<non-empty-d>` | | duplicate members | rejected on exact string match of the canonical coordinate | | member cap | 64, counted over raw `a` tags | | metadata cardinality | at most one each of `name`, `description`, `buzz-channel`, `buzz-visibility` | | metadata length | `name` ≤ 256 bytes, `description` ≤ 2048 bytes, `buzz-channel` ≤ 256 bytes, `buzz-visibility` ≤ 256 bytes | | zero members | valid | | unknown tags | ignored | Rejection order is normative so a client can predict which rule fires: `d`-cardinality → `d`-empty → member-cap → member-arity → coordinate parse → member-duplicate → metadata cardinality → metadata length. ## Design notes **No membership authorization.** Members are `a` tags, so one project may name repositories owned by different pubkeys — the entire point of the kind. That is safe because membership grants nothing: push policy reads a repository's own `kind:30617` (`api/git/policy.rs`) and never a project. `buzz-channel` is a metadata reference, not a routing directive, so projects are classified global-only. **Owner-only editing is free.** NIP-33 addressing keys replacement on `(pubkey, kind, d)`, so one signer can never overwrite another's project. No relay-side permission check exists or is needed, and `test_project_same_d_under_two_authors_are_independent` pins it. **Duplicates are rejected, not deduped.** A relay cannot rewrite tags inside a signed event without invalidating its id and signature, so the alternative to rejection is a stored duplicate-member head that every consumer must apply a first-wins rule to. **The cap is checked before the duplicate set is built.** Counting raw `a` tags rather than distinct coordinates means an event naming one coordinate thousands of times is refused on count, instead of being bounded only by the relay frame limit. **No side-effect handler.** Generic NIP-33 replacement and generic NIP-09 coordinate soft-delete already cover replacement and deletion; `kind:30621` needs no entry in `is_side_effect_kind`. ## Generic NIP-09 fix carried along `soft_delete_by_coordinate` (`crates/buzz-db/src/event.rs`) previously deleted the live coordinate head regardless of the tombstone's own `created_at`, so a delayed or replayed `a`-tag deletion signed between two versions destroyed the newer replacement. NIP-09 scopes an `a`-tag deletion to versions at or before the deletion request, so the `UPDATE` now carries `created_at <= $5` and `handle_a_tag_deletion` threads the deletion event's `created_at` through. The bug predates `kind:30621` and affected every parameterized-replaceable kind on the generic path — `kind:30617` repository announcements included — so the fix lands there rather than as a project special case. `events.created_at` is immutable per row, so the predicate guarantees a tombstone can never erase a version newer than itself; the UPDATE re-evaluates its WHERE clause after any lock wait. Under READ COMMITTED, a same-coordinate replacement racing the deletion may cause the deletion to evaluate before the new head lands, returning `Ok(false)` — but that outcome is state-identical to the deletion having arrived first, a valid Nostr ordering Nostr never fixes. The return value feeds only a debug log. No coordinate-level lock is needed. ## Coverage 32 unit tests in `crates/buzz-relay/src/handlers/ingest.rs` pin the envelope contract (accept: minimal, cross-owner, zero-member, same repo `d` under two owners, colon-bearing repo `d`, cap boundary, unknown tags, relay hint on member `a` tag, max-length metadata, stranger-owned member, uninterpreted metadata values, non-empty content; reject: every rule above plus valueless `d`/`a` tags). A fixture-driven test (`project_envelope_validates_all_shared_fixtures`) runs every case in the shared `NIP-MP.fixtures.json` oracle (11 accept + 20 reject) against `validate_project_envelope`, so any future change that breaks a case turns the test suite red. 6 `#[ignore]`d e2e tests in `crates/buzz-test-client/tests/e2e_project.rs` cover behavior that only exists past storage — coordinate round-trip, newer-wins replacement, two authors sharing a `d`, an `a`-tag tombstone that removes the project while leaving referenced `kind:30617`s intact, and a tombstone timestamped between V1 and V2 that must leave V2 live. The negative e2e case asserts on the rejection message so a refusal for an unrelated reason cannot satisfy it; that is what proves the validator is reachable from the live write path rather than merely correct in isolation. The new e2e binary is wired into the Relay E2E job. The timestamp predicate is additionally pinned at the storage layer by `coordinate_delete_spares_head_newer_than_the_deletion` in `crates/buzz-db/src/lib.rs`, which asserts both directions: a stale tombstone deletes nothing and leaves the newer head readable, and a tombstone at the head's own timestamp still deletes it. This test is wired into the Backend Integration job. Related: #3163 (the NIP-MP spec and shared conformance fixtures). Independent — either can merge first. --------- Signed-off-by: Will Pfleger <pfleger.will@gmail.com> Co-authored-by: npub1mn7jgtj4w2pd0g0zeuhxsa6jy6p0rewxz4kujt98my82ahfmp72sxjexk7 <dcfd242e557282d7a1e2cf2e6877522682f1e5c6156dc92ca7d90eaedd3b0f95@buzz.block.builderlab.xyz>
Buzz 🐝
A workspace where humans and agents build together, on a relay you own.
Vision · Sovereign · Forge · Agents · Architecture · Releasing · Apache 2.0
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 — macOS (.dmg), Linux (.AppImage / .deb), or Windows (.exe). Install it like any other app.
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 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
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.