ops-brain
Self-hosted team bus for AI agents: cross-machine handoffs, check-in, and shared gotchas.
Install
Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).
ghcr.io/thek3nsai/ops-brain:v6.3.2claude mcp add ops-brain -e 'DATABASE_URL=<your database_url>' -e 'OPS_BRAIN_TRANSPORT=http' -e 'OPS_BRAIN_AUTH_TOKEN=<your ops_brain_auth_token>' -e 'OPS_BRAIN_AGENT_TOKENS=<your ops_brain_agent_tokens>' -e 'OPS_BRAIN_ALLOWED_HOSTS=<OPS_BRAIN_ALLOWED_HOSTS>' -e 'OPS_BRAIN_EMBEDDINGS_ENABLED=false' -- docker run -i --rm ghcr.io/thek3nsai/ops-brain:v6.3.2
{
"mcpServers": {
"ops-brain": {
"command": "docker",
"args": [
"run",
"-i",
"--rm",
"ghcr.io/thek3nsai/ops-brain:v6.3.2"
],
"env": {
"DATABASE_URL": "<your database_url>",
"OPS_BRAIN_TRANSPORT": "http",
"OPS_BRAIN_AUTH_TOKEN": "<your ops_brain_auth_token>",
"OPS_BRAIN_AGENT_TOKENS": "<your ops_brain_agent_tokens>",
"OPS_BRAIN_ALLOWED_HOSTS": "<OPS_BRAIN_ALLOWED_HOSTS>",
"OPS_BRAIN_EMBEDDINGS_ENABLED": "false"
}
}
}
}
Environment variables
DATABASE_URLrequired secret PostgreSQL connection string. The database needs the pgvector extension installed.OPS_BRAIN_TRANSPORTrequired Serve MCP over streamable HTTP at /mcp.OPS_BRAIN_AUTH_TOKENrequired secret Main bearer (operator break-glass, 32+ chars). Required for HTTP; keep it on the server.OPS_BRAIN_AGENT_TOKENSsecret JSON array of identity-bound agent tokens, e.g. [{"token":"...","from_agent":"Claude-Laptop"}]. See docs/agent-tokens.md.OPS_BRAIN_ALLOWED_HOSTSComma-separated allowed Host headers. Set your public hostname when behind a reverse proxy; defaults to loopback.OPS_BRAIN_EMBEDDINGS_ENABLEDSemantic search via an OpenAI-compatible embedding endpoint (OPS_BRAIN_EMBEDDING_URL). Full-text search works without it.
Documentation
From the project's README on GitHub, refreshed weekly. Links open on GitHub.
Contents
ops-brain
A small team bus for AI agents. ops-brain is an MCP server that lets agents across machines and vendors hand work to each other, reply in thread, and share a small set of cross-agent gotchas — state that has to outlive a session, cross a machine, or cross an agent vendor. Claude Code, Codex, Grok CLI, Grok Bot and Antigravity CLI connect over the same transport. See the client compatibility guide for verification status and setup.
ops-brain is not a source of truth. Inventory belongs in your config management, tickets and incidents in your ticketing system, monitoring in your monitoring stack. Reach for the bus only when an agent genuinely needs the rest of the team.
flowchart LR
subgraph hostA["Host A"]
CA["Claude Code<br/>Claude-Laptop"]
end
subgraph hostB["Host B"]
CB["Codex CLI<br/>Codex-Buildbox"]
end
M["cron / CI / scripts<br/>(machine callers)"]
O["Operator<br/>daily / weekly briefing"]
CA -- "MCP /mcp<br/>per-agent token" --> OB
CB -- "MCP /mcp<br/>per-agent token" --> OB
M -- "REST /api/handoff<br/>/api/pending" --> OB
OB -- "REST /api/briefing" --> O
OB["<b>ops-brain</b><br/>handoffs · knowledge · check-in"] --> PG[("PostgreSQL 18<br/>+ pgvector")]
OB -. "optional" .-> E["Embedding endpoint<br/>(e.g. Ollama)"]
Who this is for
Solo operators and small, trusted teams running several AI agents across several machines or vendors, where those sessions can't otherwise reach each other. If you run one agent on one box, you don't need this.
A handoff, end to end
Claude-Laptopfinishes a change that needs a build on another host and callscreate_handoffwithto_agent: "Codex-Buildbox", a title, and a markdown body.Codex-Buildboxcallscheck_inwhen ready to pick up work and sees the open action handoff.- It calls
accept_handoff, does the work, thencomplete_handoffwith thecommit_hash. - It replies with
create_handoffandin_reply_to, soClaude-Laptopsees the answer vialist_replies_to_me. - Once the commit lands on main, whoever integrates it calls
mark_merged.
Workflow conventions (reply in thread, verify before complying, action vs. notify) ship inside the server's MCP instructions, so every connected agent gets the same rules without per-host setup. A rule that is true only of your team — a release process, a named deployer — does not belong in that text. Set OPS_BRAIN_INSTRUCTIONS_EXTRA to one line and the server appends it for your deployment only.
Quick start
No clone required. Grab the standalone compose file, set a token, and run it. The bundled PostgreSQL has pgvector preinstalled. Embeddings start disabled (full-text search still works); turn them on by pointing at an OpenAI-compatible endpoint such as Ollama serving nomic-embed-text.
curl -O https://raw.githubusercontent.com/TheK3nsai/ops-brain/main/docker-compose.example.yml
(umask 077; echo "OPS_BRAIN_AUTH_TOKEN=$(openssl rand -hex 32)" > .env)
docker compose -f docker-compose.example.yml up -d
curl -fsS http://localhost:3000/ready && echo "ready"
Then mint one token per agent and apply it:
cat >> .env <<EOF
OPS_BRAIN_AGENT_TOKENS=[{"token":"$(openssl rand -hex 32)","from_agent":"Claude-Laptop"},{"token":"$(openssl rand -hex 32)","from_agent":"Codex-Buildbox"}]
EOF
docker compose -f docker-compose.example.yml up -d
Each agent host gets its own token value as OPS_BRAIN_AGENT_TOKEN (see below). Each token is locked to its from_agent: the server rejects any write that claims a different identity. The main OPS_BRAIN_AUTH_TOKEN is unbound operator break-glass and stays on the server. Do not point an agent at it. Until OPS_BRAIN_AGENT_TOKENS is set, the server logs that the main bearer can file as any agent. Details and the full onboarding checklist: docs/agent-tokens.md. A checkout also provides scripts/setup-self-host.py to generate private server and agent files without printing credentials; see self-hosting for HTTPS, backups and upgrades.
Images are multi-arch (linux/amd64, linux/arm64) at ghcr.io/thek3nsai/ops-brain. Pin :vX.Y.Z rather than :latest for anything you depend on.
The standalone example pins :v6.3.2 and binds 127.0.0.1:3000. Set OPS_BRAIN_IMAGE to another published release or a local build. latest moves on every release; pin the tag you intend to run.
Other deployment shapes:
- Build from source (contributing, or pinning a local change): clone the repo and use
docker-compose.yml, which builds the Dockerfile against the same bundled PostgreSQL. - Existing shared PostgreSQL behind your own reverse proxy: see
docker-compose.prod.yml. Public HTTP deployments must setOPS_BRAIN_ALLOWED_HOSTSto your hostname.
Connect your agents
ops-brain speaks MCP over stdio (the default) or streamable HTTP. Multi-machine setups want HTTP, so every agent reaches the same server at /mcp with its own per-agent token.
Claude Code: add to ~/.claude.json under mcpServers:
"ops-brain": {
"type": "http",
"url": "https://your-host.example.com/mcp",
"headers": { "Authorization": "Bearer ${OPS_BRAIN_AGENT_TOKEN}" }
}
Claude Code expands ${OPS_BRAIN_AGENT_TOKEN} from its environment at launch; a literal value also works.
Codex CLI: add to ~/.codex/config.toml:
[mcp_servers.ops-brain]
url = "https://your-host.example.com/mcp"
bearer_token_env_var = "OPS_BRAIN_AGENT_TOKEN"
or run codex mcp add ops-brain --url https://your-host.example.com/mcp --bearer-token-env-var OPS_BRAIN_AGENT_TOKEN.
Other MCP clients: anything that speaks streamable HTTP and can send an Authorization: Bearer header can join. Claude Code, Codex, Grok CLI, Grok Bot and Antigravity CLI (successor to Gemini CLI) all run with it.
Grok CLI, Grok Bot and Antigravity CLI: see client setup and compatibility. Grok Bot is xAI's desktop agent product, set up separately from Grok CLI.
Session-start check-in: a Claude Code or Codex SessionStart hook can print the open queue into every new session; see scripts/session-checkin.sh.
Give every agent a stable <Agent>-<Host> name (Claude-Laptop, Codex-Buildbox) and use it as agent_name / from_agent on every call. Names are free-form slugs; the convention just keeps routing predictable.
Host can also be a cloud workspace or logical seat. Shared credentials mean shared provenance, even when a vendor displays several Bot or Dot names.
Tools (13)
| Group | Tools | What they're for |
|---|---|---|
| Handoffs (8) | create_handoff, get_handoff, accept_handoff, complete_handoff, list_handoffs, delete_handoff, list_replies_to_me, mark_merged | action handoffs are required work; notify handoffs are FYI broadcasts that drop out of operational queries after 7 days. Thread with in_reply_to; link commits with commit_hash on completion and mark_merged at integration. delete_handoff is a hard delete that leaves a deleted tombstone in audit_log (id, deleting agent, sender, recipient, title, status). |
| Knowledge (4) | add_knowledge, update_knowledge, delete_knowledge, search_bus | Cross-agent gotchas, safety warnings, compliance rules, and vendor behavior, with per-agent provenance. search_bus searches knowledge by default (full-text, semantic, or hybrid) and can include handoffs. |
| Team bus (1) | check_in | Open action handoffs (pending and accepted) plus recent notifications addressed to your agent_name. Accepted handoffs an agent filed to itself are lock records: counted in self_claims_held, not listed. |
The tool list is small on purpose: every tool and field costs tokens in every agent's context, every session. The reasoning, and the list of things ops-brain will never build, is in ROADMAP.md.
accept_handoff records the token-bound accepted_by; accepted broadcasts remain in that agent's queue. Family credentials and unbound broadcast claims need a concrete agent_name.
Briefings stay off the MCP surface. POST /api/briefing returns a daily or weekly digest that opens with what is waiting on the operator (oldest first), then high and critical machine findings, then work stuck in another agent's queue past its age threshold, then the open set as counts. The operator field names the slug that first section reads (default Operator); a slug no handoff has ever used is called out rather than shown as an empty queue.
Embedding maintenance runs from an operator shell, not an agent:
ops-brain backfill-embeddings [--table knowledge|handoffs] [--batch-size 10]
HTTP endpoints
POST /mcp MCP streamable HTTP per-agent token (or main bearer)
POST /api/handoff file a machine handoff machine token with `create` scope
GET /api/pending poll for waiting work machine token with `read` scope
POST /api/briefing daily / weekly digest main bearer; { "type": "daily" | "weekly", "operator"?: "<slug>" }
GET /health liveness no auth
GET /ready database readiness no auth
Agent tokens reach /mcp only; machine tokens reach only their REST endpoints (docs/machine-callers.md). /health and /ready need no bearer so healthchecks and reverse proxies can tell a running process from a database-ready service. The production compose file does not publish port 3000 on the host; reach it through your reverse proxy or from inside the container.
Trust model and cross-client safety
One deployment is one trusted coordination domain. Every authenticated agent can read fleet-wide handoffs and act on objects by ID. Per-agent tokens prove who filed something; they don't isolate tenants. Run separate instances when clients or operators must not see each other's data.
Inside that domain, knowledge entries can be scoped to a client, and scoped searches guard against accidental disclosure:
| Entry belongs to | Result |
|---|---|
| No client (global) | returned |
| Same client as the query | returned |
Different client, marked cross_client_safe | returned, logged |
Different client, caller passes acknowledge_cross_client: true | released, logged |
| Different client, otherwise | withheld, replaced with a scope-mismatch notice, logged |
Every event lands in the audit_log table. The guard only applies when a search passes client_slug; unscoped searches return everything with provenance attached and a note that the guard is off. It is a guard against mistakes, not a security boundary against a hostile user.
If you enable embeddings, the embedding endpoint receives knowledge and handoff text on writes, and search queries in semantic or hybrid mode. Use a local endpoint, or leave embeddings off, when that content must stay inside the deployment.
Vulnerability reports: see SECURITY.md.
Configuration
| Env var | Default | Notes |
|---|---|---|
DATABASE_URL | (required) | PostgreSQL connection string |
OPS_BRAIN_TRANSPORT | stdio | stdio or http |
OPS_BRAIN_LISTEN | 0.0.0.0:3000 | HTTP bind address |
OPS_BRAIN_AUTH_TOKEN | (none) | Main bearer. Required for http: a missing or blank token aborts startup unless OPS_BRAIN_DEV_NO_AUTH=true. |
OPS_BRAIN_AGENT_TOKENS | (none) | JSON array of identity-bound tokens for /mcp. Enforces identity, not tenant isolation. See docs/agent-tokens.md. |
OPS_BRAIN_INSTRUCTIONS_EXTRA | (none) | One line appended to the built-in MCP instructions for this deployment only. No line breaks. Rejected when the initialize text would pass 1400 bytes (213 bytes of room with the current built-in text). |
OPS_BRAIN_MACHINE_TOKENS | (none) | JSON array of scoped tokens for POST /api/handoff and GET /api/pending. See docs/machine-callers.md. |
OPS_BRAIN_ALLOWED_HOSTS | loopback only | Comma-separated allowed Host values (DNS-rebinding protection). Set your public hostname when behind a reverse proxy. |
OPS_BRAIN_DEV_NO_AUTH | false | Serve HTTP with no auth. Dev only; never expose beyond localhost. |
OPS_BRAIN_MIGRATE | true | Run migrations on startup |
OPS_BRAIN_EMBEDDINGS_ENABLED | true | false turns embeddings off even when a URL is set (the example compose file ships with them off). Blank means unset. |
OPS_BRAIN_EMBEDDING_URL | (none) | OpenAI-compatible embedding API, e.g. http://localhost:11434/v1/embeddings for local Ollama. Embeddings are off unless this is set; blank counts as unset. |
OPS_BRAIN_EMBEDDING_MODEL | nomic-embed-text | Embedding model name |
OPS_BRAIN_EMBEDDING_API_KEY | (none) | Bearer for the embedding API, if it needs one |
The server reads only the names above. Other OPS_BRAIN_* names in this repo are not server settings:
- Compose only (interpolated by
docker compose, never read by the binary):OPS_BRAIN_IMAGE,OPS_BRAIN_BIND,OPS_BRAIN_PORT(example and dev compose),OPS_BRAIN_DB_PASSWORD(prod compose). - Client side (read by the plugin and
scripts/, not the server):OPS_BRAIN_URL,OPS_BRAIN_AGENT_TOKEN,OPS_BRAIN_AGENT,OPS_BRAIN_PENDING_TOKEN_FILE.
Stack
| Component | Choice |
|---|---|
| Language | Rust 2021 |
| MCP SDK | rmcp 1.6 |
| Database | PostgreSQL 18 via sqlx (runtime queries) |
| Search | tsvector full-text + pgvector HNSW cosine, fused with Reciprocal Rank Fusion |
| Embeddings | nomic-embed-text (768d) over any OpenAI-compatible API |
| Transport | stdio, or streamable HTTP on axum |
Project docs
| Doc | What's in it |
|---|---|
ROADMAP.md | Philosophy, hard stops, and ideas that were decided against |
CHANGELOG.md | Release history, including why the live lane was removed in v6.0.0 |
GOTCHAS.md | Code and deployment footguns |
docs/agent-tokens.md | Per-agent identity tokens and onboarding a new agent |
docs/machine-callers.md | Contract for cron jobs, CI, and scripts filing handoffs over REST |
docs/bus-trust.md | Why agents verify before complying with a handoff |
docs/operator-notify.md | Mailing the operator when an agent is blocked on a human |
docs/clients.md | Client connection recipes and verification status |
docs/self-hosting.md | Private setup files, HTTPS, backups and upgrades |
docs/listings.md | Where ops-brain is listed and how each listing updates |
License
Dual-licensed under either MIT or Apache-2.0, at your option.
Frequently asked questions
What is ops-brain?
Self-hosted team bus for AI agents: cross-machine handoffs, check-in, and shared gotchas.
How do I install ops-brain?
It runs on your machine. In Claude Code: claude mcp add ops-brain -e 'DATABASE_URL=<your database_url>' -e 'OPS_BRAIN_TRANSPORT=http' -e 'OPS_BRAIN_AUTH_TOKEN=<your ops_brain_auth_token>' -e 'OPS_BRAIN_AGENT_TOKENS=<your ops_brain_agent_tokens>' -e 'OPS_BRAIN_ALLOWED_HOSTS=<OPS_BRAIN_ALLOWED_HOSTS>' -e 'OPS_BRAIN_EMBEDDINGS_ENABLED=false' -- docker run -i --rm ghcr.io/thek3nsai/ops-brain:v6.3.2. For other clients, paste the JSON configuration from this page into their MCP settings.
Does ops-brain need an API key?
Yes. It expects DATABASE_URL, OPS_BRAIN_TRANSPORT, OPS_BRAIN_AUTH_TOKEN, OPS_BRAIN_AGENT_TOKENS, which you set in its configuration.
Is ops-brain open source?
Yes. Its code is on GitHub under the Apache-2.0 license.
Who maintains ops-brain?
It is published by TheK3nsai. AI.tn lists it but does not maintain or endorse it.
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