Munder Difflin

Local multi-agent harness for Claude Code, Antigravity (Gemini), and OpenAI Codex. Autonomous agents that message, route, and remember — coordinated by a GOD orchestrator you talk to, and visualized as avatars at work on a shared office floor.

Electron · React · TypeScript · Pixi.js · xterm.js · node-pty

Munder Difflin is a desktop app that wraps real terminal-agent CLIs as fully-capable agents, wires them into a hive mind, and puts a GOD orchestration agent in charge — the one agent you talk to in order to get things done. Under the hood it runs the fastest memory layer in the world so every agent remembers what it learns and recalls it instantly.

• Every terminal is an agent. Each claude, agy, codex, or custom session runs as a real process in a pseudo-terminal (node-pty), byte-for-byte authentic, rendered with xterm.js.
• Every agent is an avatar. Sessions appear as characters on a Pixi.js office floor — they walk to stations as they work, and envelopes fly desk-to-desk when they message each other.
• The hive coordinates them. Agents read their memory and drain a mailbox; the router moves messages between inboxes; the GOD agent adjudicates, assigns, and escalates only when it needs you.
• Memory that's instant. A markdown-first memory layer with a semantic recall index means agents remember across sessions and recall in milliseconds.

            you ── talk to ──►  ┌─────────────┐
                                │  GOD agent  │  orchestrator / supervisor
                                │ (Michael's  │  roster · routing · adjudication
                                │   office)   │  blackboard · task ledger
                                └──────┬──────┘
                                       │ assigns · routes · escalates
              ┌────────────────────────┼────────────────────────┐
              ▼                         ▼                         ▼
        ┌───────────┐            ┌───────────┐            ┌───────────┐
        │  agent A  │  message   │  agent B  │  message   │  agent C  │
        │ provider  │ ─────────► │ provider  │ ─────────► │ provider  │
        │  + memory │            │  + memory │            │  + memory │
        └───────────┘            └───────────┘            └───────────┘
              └──────── shared hive: memory · mailbox · blackboard · log ───────┘

1. You spawn agents — each is a normal terminal process (claude, agy, codex, or custom) with its own working directory, identity, and provider-specific lifecycle.
2. Agents collaborate through the hive — a local git repo of plain files. They write to their own outbox/; the harness's router delivers into recipients' inbox/. No agent ever touches git (single-committer design avoids index.lock corruption).
3. The GOD agent runs the floor — it reads every request, resolves routine ones itself (keeping the system fully autonomous), and only escalates critical items (spend, destructive ops, scope changes) into an approvals queue you act on.
4. Everything is visible — you watch avatars move, envelopes fly, and the live terminal stream; you can type back into any session, browse its files, and read its git history.

See HIVE.md for the full multi-agent design, SPEC.md for the terminal/event plane, and DESIGN.md for the visual system.

• macOS, Windows, or Linux.
• Node.js 18+ and npm.
• A C/C++ toolchain for node-pty's native addon — on macOS, install Xcode Command Line Tools:

  xcode-select --install

• At least one supported terminal-agent CLI on your PATH: Claude Code (claude, the default command), Antigravity (agy, Gemini), or OpenAI Codex (codex). Claude uses native hooks, Antigravity uses the agy-hook bridge, and Codex participates through initial-prompt protocol injection plus inbox/outbox routing.
• Optional: the semantic memory index for instant cross-session recall (the app works without it — markdown memory still functions).

git clone https://github.com/chaitanyagiri/munder-difflin.git
cd munder-difflin
npm install        # postinstall rebuilds node-pty against Electron's ABI
npm run dev        # launches the Electron app with hot reload

On first launch you'll go through the onboarding wizard, then land on the floor. Use Add agent to spawn your first session — the GOD agent seats itself in Michael's office automatically.

npm run build      # production build via electron-vite
npm run preview    # preview the production build
npm run typecheck  # type-check the node (main/preload) and web (renderer) projects

If node-pty fails to load after an Electron upgrade, re-run npm install (the postinstall hook runs electron-rebuild against the current Electron ABI).

Two data planes feed one renderer:

┌───────────────────────────────────────────────────────────────┐
│                     Electron Renderer (React)                  │
│   ┌──────────────────┐    ┌──────────────────────────────┐    │
│   │ Office Floor      │    │ Terminal + Command Bar       │    │
│   │ (Pixi.js)        │    │ Files + Git tabs (xterm.js)  │    │
│   └─────────▲────────┘    └────────────▲─────────────────┘    │
│             │ avatar state             │ pty bytes / fs / git  │
└─────────────┼──────────────────────────┼───────────────────────┘
              │ IPC (contextBridge: window.cth)
       ┌──────┴──────────┐        ┌──────┴─────────────┐
       │  Event Plane    │        │  Terminal Plane    │
       │  hooks / hive   │        │  node-pty PTYs     │
       │  router + GOD   │        │  + fs + git        │
       └────────▲────────┘        └──────▲─────────────┘
                │ hook payloads          │ stdin / stdout
                └─────────┬──────────────┘
                   ┌──────┴──────────────┐
                   │ claude / agy / codex│
                   └─────────────────────┘

• Terminal plane. The main process owns a PtyManager that spawns each agent as a node-pty process and streams output over per-id IPC (pty:data:<id>). The renderer talks only through a typed window.cth bridge (src/preload/index.ts), which also exposes sandboxed filesystem and git helpers.
• Hive / event plane. hive.ts is the on-disk multi-agent layer; hooks.ts runs the hook server that provider bridges POST lifecycle payloads to (cth-hook for Claude Code, agy-hook for Antigravity). memory.ts wraps the semantic memory CLI. The router delivers messages, drains provider outboxes, the GOD agent adjudicates, and idle/inbox wakeups keep workers draining mail.

src/
  main/                      Electron main process (Node)
    index.ts                 window, IPC handlers, quit guard
    pty.ts                   node-pty manager (spawn/write/resize/kill/stream)
    hive.ts                  on-disk multi-agent layer (memory, mailboxes, router)
    hooks.ts                 hook server + provider hook shims (`cth-hook`, `agy-hook`)
    memory.ts                semantic memory layer (CLI wrapper, degrade-to-noop)
    config.ts                harness config persistence + home setup
    transcript.ts            reads ~/.claude/projects/ JSONL transcripts for real token/cost telemetry
    telemetry.ts             live OTel collector + usage/cost feed for observability
    usage.ts / pricing.ts    UsageProvider seam + per-model cost attribution
    breaker.ts / control.ts  cost/runaway circuit breaker (steer/constrain/stop) + HITL gate / steer / stop
    reflect.ts               MemoryReflector — memory condensation
    db.ts                    SQLite durable store (window bounds + history) + durable cost ledger
    github.ts                GitHub issue + CI run ingestion via the gh CLI
    shellEnv.ts              resolve PATH and shell env for child processes
    fs.ts / git.ts           sandboxed filesystem + git bridges
  preload/                   contextBridge → typed window.cth API
  renderer/src/
    App.tsx                  top-level layout + wiring
    design/                  tokens.css / tokens.ts / global.css (design source of truth)
    components/              PixelPanel, AgentDetailPanel, CommandBar, ApprovalsPanel, MemoryPanel, …
    CommandCenterPanel,      Michael's control surface (Terminal/Floor/Memory/Activity/Tasks/Schedules/Handbook tabs)
    ToolWaterfall,           per-agent tool-span waterfall for the observability view
    TasksKanban,             dependency-aware kanban board (Tasks tab)
    ThreadsPanel,            hive message conversation viewer (Messages tab)
    MessageQueueComposer,    park messages for a busy agent
    scene/office/            Pixi office floor: OfficeFloor, Character, Camera, cast, pathfinding, …
    store/ · hooks/          zustand store, event loop, PTY parser, typewriter
    assets/                  tilesets, maps, character sheets (see ATTRIBUTION.md)
docs/                        `logo.png`, `banner.png`, landing page (GitHub Pages → munderdiffl.in)
docs/media/                  `og.png` (social previews) + rendered Remotion clips
landing-remotion/            Remotion project that renders the landing page's "how it works" clips
HIVE.md · SPEC.md · DESIGN.md   multi-agent · terminal/event · visual design

The aesthetic is Animal Crossing × Earthbound × SNES menu UI — pixel-snapped, chunky, friendly. DESIGN.md is canonical; every component derives from its tokens. The Munder Difflin brand layers a Dunder-Mifflin maroon (#6E1423) and gold (#F4D35E) on top for logo and chrome. The 15 avatars are the cast of The Office, differentiated by hair/skin/shirt recipes.

Shipped in v0.2.0-v0.2.3:

• Heartbeat — scheduler heartbeat that re-engages the floor when it goes quiet, with last/next-fired times surfaced in the Schedules tab.
• Memory reflection — the MemoryReflector summarizes and bounds per-agent memory over time to prevent unbounded growth.
• Persistence — SQLite-backed durable store for window bounds + history across restarts, plus a durable cost ledger and persisted session IDs.
• Hook-driven avatars — broadened hook→station coverage and caged the synthetic demo loop, with new compacting and looping avatar states.
• Multi-provider floor — Claude Code, Antigravity (agy / Gemini), and OpenAI Codex can participate in the same hive.
• Dedicated Schedules tab — recurring missions and the adaptive heartbeat have their own Command Center tab.
• Tunnelmole ingress — Slack and generic webhook public URLs use tunnelmole instead of localtunnel.

Next up:

• More chat integrations — Telegram and richer chat bridges that pipe a channel straight into Michael's queue (and route his replies back out), so you can run the floor from your phone.
• More provider CLIs — extend the provider layer beyond Claude Code, Antigravity, and Codex.
• Realtime Michael — a low-latency realtime LLM channel for quick, snappy back-and-forth with the orchestrator, alongside the async terminal.
• Fuller avatar coverage — push the remaining station visits and tool-bubbles to be driven 100% by real Claude Code hook events.
• Durable layout & command history — extend persistence to agent layout and per-session command history.

Contributions are welcome — this is an early prototype with a lot of surface area. Start with CONTRIBUTING.md. The short version: fork, npm install && npm run dev, keep npm run typecheck green, and derive any new UI from DESIGN.md tokens. Good first areas: wiring real hook events, the add-agent flow, the config drawer, and cross-platform work.

The source code is licensed under the MIT License — see LICENSE. The MIT grant covers the code only; the non-commercial asset restriction above is carved out in the LICENSE scope note. Munder Difflin is an affectionate parody and is not affiliated with NBC's The Office or Dunder Mifflin.

• LimeZu — pixel-art tilesets and character base sheets.
• shahar061/the-office — office tileset/map vendoring.
• Pixi.js · xterm.js · node-pty · electron-vite · CodeMirror — the libraries this is built on.
• Remotion — the landing page's animated "how it works" clips (landing-remotion/).
• The Office (US) — for Munder Difflin, Inc.