d25384a4f3
## Summary This makes every serving writer of a community-write-fenced table take community admission in application code. That's the "Dual enforcement" step of the Supported Writer Contract in `ARCHITECTURE.md`. Admission means the shared community deletion lock plus the active/not-deleted check from `deletion::guard_community_write`. It's taken before the transaction's first tenant write or row lock and held until commit. The 32 `community_write_fence_*` triggers, the six fence SQL functions and `validate_serving_catalog` are unchanged. They stay authoritative. Removing them is a separate migration that will be checked table by table. ## Changes - **New admission entry point.** `begin_community_write_transaction` (`runtime/mod.rs`) builds an `AdmittedTx` for non-event writers. It sits next to the existing event-write entry points and shares their implementation. - **Writers moved onto it:** - `api_tokens`, `archived_identities`, `channels`, `channel_members` (including DM and admin paths), `community_bans`, `git_repo_names` - `moderation_actions` and `moderation_reports`, `personal_read_accounts` and `personal_read_frontiers`, `pubkey_allowlist` - `push_leases`, `push_match_queue`, `push_wake_outbox` - `relay_invites`, `relay_members` (including the new-community owner bootstrap and the startup `pubkey_allowlist` backfill), `join_policy_acceptances` - `thread_metadata`, `users`, `workflows`, `workflow_runs`, `workflow_approvals`, `scheduled_workflow_fires` - Personal-read helpers now require `&mut AdmittedTx`. - **`buzz-audit`.** An append now passes admission first, then takes a transaction-scoped audit-chain lock (`pg_advisory_xact_lock`). This replaces the session lock and the `catch_unwind` unlock cleanup. The relay audit worker retries a `lock_timeout` on either lock and keeps the entry; an admission refusal is terminal, as the trigger's refusal was. - **Fleet-wide statements.** These keep `community_write_allowed(...)` in the same SQL statement, because there's no single community to admit up front: - scheduled-fire prune - invite expiry - push matcher claim and exhausted-job cleanup - startup `d_tag` backfill - channel TTL cleanup - **Relay-member removal.** `remove_relay_member` and `remove_relay_member_if_role` run `delete_member_with_acceptances` inside their admitted transaction. The helper no longer opens its own transaction, so the member lock, the `join_policy_acceptances` delete and the member delete all hold admission until commit. `delete_workflow` and `delete_workflow_for_owner` are gone on `main`, and the coordinate deletion path they used to back was already admitted. - **Unchanged exceptions.** The deletion-executor generation exception and the serving-lease path work as before. - **Tables with no production writer.** `delivery_log` and `subscriptions` are only written by a historical cutover script and a test fixture. Their triggers stay. - **No cross-community moves.** No production `community_id` move exists on a fenced table. The only `SET community_id = NULL` is the deletion-executor purge. So no dual-community lock ordering was needed. ## What got simpler - Per-store ad-hoc writer helpers are gone: `begin_event_write_transaction` and `acquire_event_write_connection` in `channel.rs`, and `begin_operation_transaction` in `push.rs`. - Audit append drops the session advisory unlock, the `catch_unwind`/`resume_unwind` panic handling, `log_inner` and the `futures-util` dependency. ## Notes for reviewers - **New crate dependency.** `buzz-audit` now depends on `buzz-db` only to call the free function `buzz_db::deletion::guard_community_write`. `ARCHITECTURE.md` names this as the one sanctioned subsystem edge, and its audit section is updated to match. - **Hot paths.** `ensure_user` first checks whether the user exists and returns without admission when it does (no write happens). Only a real insert takes admission. `touch_api_token` has no production caller today. - **No-op writers stay read-only.** The startup allowlist backfill returns early on plain reads when the legacy table is gone, it has no rows for the community, or the community already has members, so a quiescing deployment community still starts. It re-checks under admission before inserting. - **Owner mutations.** When admission refuses a transfer or a provisioning and a deletion request exists, both report `DeletionPending`, as before. For a transfer, the operator API keeps its coded `deletion_lifecycle_conflict` 409. For provisioning, it keeps the existing uncoded 409, `owner_conflict: community deletion is pending`. - **Per-community worker loops.** `claim_due_push_wakes` and similar now return `AccessDenied` for a community that goes quiescing between the active-host scan and the claim. The worker logs it at `debug` and the next scan skips the community. - **Kick side effects.** `membership_removal_fence` admits before the membership lock to keep the lock order of `add_member`. A community that leaves `active` between the kick and the fence skips live subscription eviction; the membership cache is already invalidated and fan-out re-checks membership. This is documented on the function. ## Testing - **New refusal tests.** 19 tests: the 18 in `store::admission_postgres_tests`, plus `audit_append_requires_application_admission_with_triggers_bypassed`. Each runs with ordinary triggers disabled (`session_replication_role = replica`), checks that a raw fenced insert would succeed, and asserts that the writer is refused for both `quiescing` and `fenced` communities. Active writes still succeed. - **The tests catch a missing check.** Measured in review at `6fc073c3f`: with the guard in `AdmittedTx::admit` bypassed, 25 tests fail. That includes 16 of the 18 database admission tests. The audit test stays green there, because audit calls `guard_community_write` directly. - **Affected PG suites, with triggers on:** 183/183 passed across 16 store suites, push 18/18 run isolated, audit 7/7. The existing artifact, reaction and replaceable admission tests pass. - **Review fixes, each checked to fail without its fix:** - `allowlist_backfill_requires_application_admission` and `owner_mutations_report_pending_deletion_when_admission_refuses` fail with the old `relay_members.rs`. - `empty_allowlist_backfill_skips_admission` fails (`AccessDenied … write-fenced (quiescing)`) without the allowlist-rows early return. - `audit_worker_retries_admission_lock_timeout_until_original_entry_is_appended_once` holds the community deletion lock exclusive and fails without the admission retry arm. - The existing audit-chain retry test now looks for the transaction-scoped lock and passes. - The two owner-revoke mini-schema tests (`bridge.rs`, `ingest.rs`) now include `communities` and `community_deletion_lock_key`, which admission reads; both failed without that. - **Static checks:** `cargo fmt --check` and workspace `cargo clippy --all-targets -D warnings` pass. - **Not run locally:** the `mobile-check` step of `just ci` (the build machine couldn't reach pub.dev, and clean base fails the same way) and the full `just test` lane. CI on this PR covers both. `mesh_demo::demo_join_forwarded_arm_round_trips_echo` fails on the build machine at base `394d4a434` as well; it uses no database. Refs BUZZ-314. --------- Signed-off-by: Elrond <28d6302a099e5225b02c4155ac4236e4912603df2ab08dbfc2f4fef08ce598c8@buzz.block.builderlab.xyz> Co-authored-by: Elrond <28d6302a099e5225b02c4155ac4236e4912603df2ab08dbfc2f4fef08ce598c8@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:
| 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
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.