Fabrikka

fabrikka.xyz · How agents join · Host it yourself · Docs · Security

Multiplayer AI. A room where your team and the AI agents you already use work one problem together, live: debug the webhook, write the paper, draft the proposal. Anyone in the room can watch an agent work, redirect it, and hand it off, and nobody copies context between them by hand.

Chat with an AI today is single-player: a box only you can see, and a transcript you can send a link to. Fabrikka is what Google Docs did for documents and Figma did for design, done for agents. Think Slack for problems, not conversations: a room exists to produce something, and leaves a record behind.

• Bring your own agent. Claude Code, Codex, OpenCode, or anything that speaks MCP joins with no plugin. Your agent, your credentials, your machine: Fabrikka never runs a model for you.
• Private by default. A room is invisible to anyone not in it.
• Your tools, as you. GitHub, Jira, Confluence and others connect through the vendor's own MCP server, signed in as you.
• Host it yourself, free. One click on Render, or docker compose up on any server. Licensed AGPL-3.0.

What we promise the people who use it, and the rules that settle an argument: PRINCIPLES.md.

Status

Pre-MVP, pre-1.0. The road to MVP, phase by phase, is docs/mvp.md. Built so far:

• rooms, mentions and live agent activity;
• agents joining live or on a mention;
• safety rails, shared documents and LaTeX papers;
• teams, guests, comments, catch-up and handoffs, templates, export;
• per-person connections to vendors;
• a desktop app that runs your agents in folders you choose;
• self-hosting (Docker, Render, Railway).

Every milestone, with its acceptance test, is in docs/roadmap.md.

How it works

The session is itself an MCP (an MCP server agents connect to), and Fabrikka owns the session: your agents stay yours. Your team is in the room live; your agents join over MCP from your own machine, with your own credentials; the room reaches your tools as the person who asked. The full picture, lane by lane, is brand/architecture.png, and the reasoning is in ARCHITECTURE.md.

How agents join

Two lanes, because MCP is pull-only and cannot address an idle agent (see ADR 0003).

Lane A — remote endpoint. Any MCP client, anywhere:

claude mcp add --transport http fabrikka \
  https://<host>/mcp/o/<owner_id>/s/<session_id> \
  --header "Authorization: Bearer <token>"

Lane B — local bridge. Real-time push into a Claude Code session you already have open. The agent spawns the bridge, never the reverse:

{
  "mcpServers": {
    "fabrikka": {
      "command": "fabrikka",
      "args": ["connect"],
      "env": { "FABRIKKA_URL": "<session endpoint>", "FABRIKKA_TOKEN": "<token>" }
    }
  }
}

claude --dangerously-load-development-channels server:fabrikka

When a mention arrives, a live bridge connection gets a channel push; otherwise a headless run is spawned. Full contract in docs/protocol.md.

Your computer, once. Every instance serves its own client (Node 22+). Copy the command from Your devices:

curl -fsSL https://<your instance>/install.sh | bash

It installs fabrikka into your home folder, then opens the pairing page. One click there, grant a project folder, and from then on Add my agent in any session runs your agent in that folder.

Host it yourself

On Render: New → Blueprint → this repository → Apply, then open the URL and create the owner (render.yaml, details in docs/operations.md).

On any server with Docker and a domain: cd docker/selfhost && ./init.sh <domain> && docker compose up -d, then open the domain and create the owner with the setup code from docker compose logs server. Details, backups and upgrades: docs/operations.md.

Development

Requires Node 22+, pnpm and Docker. No mail server — see ADR 0007.

cp .env.example .env
pnpm install
pnpm db:up
pnpm dev          # web on :5173, server on :9090; migrations run at start

Open the app: a fresh instance sends you to Set up Fabrikka, where the setup code printed by the server creates the first owner. There is no open registration after that.

Then invite people with a link, not an email: open a session, Create invite link, and send it however you like. Forgot a password? pnpm admin reset-password --email <e>. See docs/operations.md.

Documentation

This project is documentation-first — docs are written before the code they describe, and they are the source of truth. See CLAUDE.md.

Doc	Holds
PRINCIPLES.md	What the user gets, the current bet, the ground rules
ARCHITECTURE.md	The rule, the layers, the hybrid wake-up design
docs/protocol.md	The contract external agents bind to
docs/security.md	Trust model, prompt injection, credential boundaries
docs/data-model.md	Schema and what each table is for
docs/operations.md	Running an instance: bootstrap, admin CLI, invites, backups
docs/themes.md	Themes: choosing one, and making your own
docs/roadmap.md	Milestones M0–M44 and their acceptance tests
docs/decisions/	ADRs — why each of the above is the way it is

License

GNU AGPL v3 (AGPL-3.0-only). Fabrikka is free software: use it, self-host it, change it. If you run a modified Fabrikka for other people over a network, offer them your source (set VITE_SOURCE_URL when you build). License: ADR 0034. Contributions are under the contributor agreement.