Munder Difflin v0.4.5

A local hive of Claude Code, Antigravity, Codex, Gemini, Cursor, Grok & Copilot agents that run themselves.
Messaging, routing, and remembering, coordinated by your clone, Michael, who you talk to. Local-first and open source.

→ munderdiffl.in · see it in action, then grab a build below

What's new in 0.4.5

The release that fixes the things you trusted and were quietly wrong. Cost reporting was off
by more than half after a restart, semantic memory never worked on Apple Silicon, and agents
could not talk to each other reliably. All three are fixed. Plus weekday scheduling, clickable
paths everywhere, one editor instead of two, and 23 community pull requests.

Costs are reported right. The telemetry counter reset on every app restart while the
session id stayed the same, so the floor under reported spend by a wide margin. It is now folded
from the ledger, with a separate session figure kept alongside.
Semantic memory works on Apple Silicon. CoreML overflowed the quantized embedding graph,
every vector came back NaN, and chroma rejected every upsert. Embeddings are pinned to CPU
on macOS.
Agents talk to each other reliably. An inbox wake watchdog, no more stale nudges, mail to
a missing inbox is bounced and logged instead of dropped, a capped steer queue, atomic
webhook dispatch, and PROTOCOL.md refreshes on boot.
Workers are reliable to hire. Spawn, teardown, floor cards, and engine availability are
all checked before a hire is committed.
The renderer runs inside Chromium's sandbox.
Windows agents quit when the app does.
Restart to update no longer gets stuck when a running agent makes the app refuse to quit.
Triggers run on weekdays at a time of day, not just on an interval, and they are DST safe.
Focus mode survives a restart and you can edit an agent from inside it.
Every path in terminal output is clickable. Markdown previews, source opens in the editor,
images and unknown types reveal in Finder or Explorer.
One editor. The fullscreen file overlay is gone, everything opens in the IDE, and the git
rail is collapsed by default.
Updating is one click. The title-bar badge downloads the build for your machine and tells
you how to install it, it says latest once a check confirms you are current, and the first
run after an update opens that release's page.
Settings opens with a card carrying your version, your plan, and a way back to these notes.
Terminals follow the window theme, Gemini CLI and Cursor Agent join the engine list, and
Michael hires on his own terms with editable agent names.

A note on Pro

v0.5.0 launches with a Pro version alongside the community version. Community stays free, stays
open, and keeps getting updates. Pro ships with new features and integrations, with more posted
throughout the year, and it stays ahead of Community, for power users who want the full potential
of coding agents and agent harnesses. The Pro roadmap also includes a mobile app. The first 100 people on the
Founders' Wall get a month of Pro free, then 50% off the annual plan.

Thanks

23 community pull requests landed in this release. Thank you to everyone who opened one,
reviewed one, or filed the bug that led to one. The full list is in CHANGELOG.md.

Munder Difflin · v0.4.5

Thank you for being here early.

Every bug you filed, every PR you sent, every floor screenshot you posted shaped what Munder Difflin is today. This release is built on that. So before the list of fixes, a proper thank you to the people who showed up first.

  <div class="two">
    <div class="card lilac">
      <span class="tag">Announcement</span>
      <h2>v0.5.0 launches with a Pro version.</h2>
      <p><b>Community stays free, stays open, and keeps getting updates.</b> Pro ships with
      new features and integrations, with more posted throughout the year, and it stays
      ahead of Community, for power users who want the full potential of coding agents and
      agent harnesses. The Pro roadmap also includes a mobile app.</p>
    </div>
    <div class="band">
      <div class="yr">50<small>% OFF</small></div>
      <div><b>On the Founders' Wall?</b>
      <span>A month of Munder Difflin Pro free, then 50% off the annual plan. For the first
      100 people on the wall.</span></div>
    </div>
  </div>
</div>
<div class="nav">
  <span class="l step">01 / 02</span>
  <label class="btn primary" for="pg2">See what's new in 0.4.5 &rarr;</label>
  <span class="r step">&nbsp;</span>
</div>

What's new in 0.4.5

The things you trusted and were quietly wrong.

Three fixes lead this release, and each one was under reporting, failing silently, or both. Then a solid list of things that are simply new.

  <div class="grid">
    <div class="card mint">
      <span class="tag">Costs</span>
      <h2>Spend is reported right.</h2>
      <p>The counter reset on every app restart while the session id stayed the same, so the
      floor under reported <b>by a wide margin</b>. It is now folded from the ledger, with a
      session figure kept alongside.</p>
    </div>
    <div class="card sky">
      <span class="tag">Memory</span>
      <h2>Semantic memory on Apple Silicon.</h2>
      <p>CoreML overflowed the embedding graph, every vector came back NaN, and nothing was
      ever stored. Embeddings now run on CPU on macOS, so recall actually recalls.</p>
    </div>
    <div class="card peach">
      <span class="tag">Hive</span>
      <h2>Agents talk to each other, reliably.</h2>
      <p>A watchdog wakes idle workers with mail waiting, stale nudges stop, mail to a missing
      inbox bounces instead of vanishing, and webhook dispatch is atomic.</p>
    </div>
    <div class="card">
      <span class="tag">Security</span>
      <h2>The renderer runs in Chromium's sandbox.</h2>
      <p>Privileged work stays behind the bridge. Release pages like this one render in a
      sealed frame with no scripts at all.</p>
    </div>
  </div>

  <h3>Also new</h3>
  <ul class="rows">
    <li><i>Triggers</i><div><b>Schedule on weekdays at a time of day</b>
      <p>Not just on an interval, and DST safe by construction.</p></div></li>
    <li><i>Terminal</i><div><b>Every path in output is clickable</b>
      <p>Markdown previews, source opens in the editor, everything else reveals in Finder or Explorer.</p></div></li>
    <li><i>Editor</i><div><b>One editor, not two</b>
      <p>The fullscreen overlay is gone. Everything opens in the IDE, git rail collapsed by default.</p></div></li>
    <li><i>Focus</i><div><b>Focus mode survives a restart</b>
      <p>And you can edit an agent without leaving it.</p></div></li>
    <li><i>Workers</i><div><b>Hiring is reliable</b>
      <p>Spawn, teardown, floor cards and engine checks happen before a hire is committed.</p></div></li>
    <li><i>Updates</i><div><b>Updating is one click, and you pick how</b>
      <p>The version badge next to the logo downloads the build for your machine and walks you
      through replacing the app, step by step for your OS. Auto update lives in Settings. Once
      you are current the badge says latest, and the first launch after an update opens that
      release's page. Restart to update no longer gets stuck either.</p></div></li>
    <li><i>Windows</i><div><b>Quitting the app quits the agents</b></div></li>
    <li><i>Engines</i><div><b>Gemini CLI and Cursor Agent join the floor</b></div></li>
    <li><i>Terminal</i><div><b>TUIs follow the window theme</b></div></li>
    <li><i>Agents</i><div><b>Michael hires on his own terms, and names are editable</b></div></li>
  </ul>

  <div class="thanks">
    <div class="n">23<small>PULL REQUESTS</small></div>
    <p><b>Thank you to every contributor.</b> 23 community pull requests landed in this
    release. If you opened one, reviewed one, or filed the bug that led to one, this version
    has your fingerprints on it. The full list is in the release notes on GitHub.</p>
  </div>

  <div class="meet">
    <div class="card">
      <span class="tag">Star</span>
      <h2>If this has been useful, a star is the whole marketing budget.</h2>
      <p>The <b>&#11088; Star us on GitHub</b> button is just below this page.</p>
    </div>
    <div class="card sky">
      <span class="tag">Discord</span>
      <h2>Come hang out.</h2>
      <p>Questions, floor screenshots, and a role when your PR lands. Click the address to select it, then copy.</p>
      <a class="url" href="https://discord.gg/SEDzP5ZPk5" target="_blank" rel="noopener">discord.gg/SEDzP5ZPk5</a>
    </div>
  </div>
  <p class="foot"><b>Restart to update</b> closes the app and every running agent, so finish or
  pause what they are doing first. <b>Later</b> keeps the update waiting until you are ready.</p>
</div>
<div class="nav">
  <label class="btn sm l" for="pg1">&larr; Back</label>
  <span class="step">02 / 02</span>
  <span class="r step">&nbsp;</span>
</div>

Still new in 0.4.4 · Windows joins the floor

If you use Windows, 0.4.4 is the release that made the app work. Agents could never message
each other there. They started, looked completely healthy, and quietly ignored one another
forever. It also fixed the first five minutes: setup could not be finished, and on a brand new
install the parts that carry messages between agents never started until you quit and reopened
the app.

Windows agents talk to each other. The hive protocol reaches an agent as a multi-line
command-line argument, and cmd.exe cut it at the first newline, taking the block that names
inbox/ and outbox/ with it. Spawns now hand the real interpreter an argument array.
Setup finishes. Accepting the suggested folder used to fail outright, and the folder box
was empty even though the text above promised a suggestion.
A fresh install works immediately. Messages between agents, live status on the cards, and
Restart & Continue all stayed dead until you restarted the app, and nothing said so.
Skills and Prerequisites. Every skill your agents can use, 227 more to browse and install,
and one page in Settings that says which supporting tools you have and which you do not.
Release drops. A release can carry its own designed page instead of a version number in
the corner. You are reading one.
Dark mode rebuilt. The one-pixel borders that draw every control measured under 2:1
against their background, so the whole app read as flat grey shapes. Re-tuned and measured
rather than picked by eye.

Still new in 0.4.3 — Michael is the logo

The mark is a face now. Munder Difflin has always been an office you watch people work in,
and the icon was a pair of script initials on a gradient. It's Michael — your clone — drawn in
the app's own pixel art, on the brand yellow, looking straight back at you.

One mark, everywhere. The dock icon on macOS, Windows and Linux, the site favicon and
header, the in-app toolbar, and the README all render the same portrait. No variant is a
redrawing of another.
The SVG is the source of truth. The mark is authored as pure vector — every pixel of the
sprite is a rect, with no fonts, no gradients and no filters — and every raster in build/
and docs/ is generated from it by tools/make-logo.cjs.
The old icon depended on the Lobster webfont being installed to render correctly.
Icons are native at every size. A real multi-resolution .icns (16→1024, with the macOS
drop shadow) and a .ico carrying six sizes, plus a 32px favicon and a 180px apple-touch-icon,
so nothing is a downscale of a 512px image any more.
Brighter call-to-action buttons. The download button took its fill from the same token as
accent text, which has to stay dark enough to read on a white page — so on the light theme
it came out brown. Fills now have their own token and start at what used to be the hover colour.

Note

Appearance only. No functional change in this release: the update carries the new icon into
your dock, and nothing else moves.

Still new in 0.4.2 — Anonymous usage stats, done in the open

Munder Difflin now sends a small set of anonymous usage events (app opened, agent spawned,
feature used) so we can tell whether features are actually used. It is built the way an
open-source project should build it:

TELEMETRY.md is the
complete contract. Every event and property is listed there, and the code enforces that list
as a hard allowlist — anything not in the table cannot be sent. No prompts, no transcripts, no
file paths, no repo names, no identifiers. Events are PostHog anonymous events (no person
profile, no identity), keyed by a random UUID you can delete.
Opt-out, three ways. Uncheck it during onboarding, flip Settings → General → Anonymous
usage stats, or set the standard DO_NOT_TRACK env var.
Forks send nothing. The analytics key is injected only in release CI — building from
source produces a build where the analytics module is a complete no-op.

Still new in 0.4.1 — The app says what the site says

Michael is your clone. The website has been describing Munder Difflin as a clone of you that
works around the clock — the app still called it a "GOD agent." Now they match.

Your clone, not the GOD agent. Michael is described as your clone throughout onboarding,
and his card on the floor carries a BOSS tag — he's the boss of the agents, you're still
the boss of him.
Onboarding was rewritten. It opens on what you actually get ("a clone of you, working
24/7") instead of a feature list, and the engine card no longer advertises three engines when
ten ship — Claude Code, Codex, Grok, Kimi, Antigravity, Qwen, OpenCode, Crush, pi and Copilot
are all named.

Note

This release changes wording only. The god agent id, the hive folder layout, and message
routing are untouched, so existing hives, memory, and running agents carry over exactly as they
are. Nothing to migrate.

Note

Auto-update carries you here from v0.3.7 or later. If you are still on v0.3.5 or v0.3.6,
those builds shipped the broken updater and need one manual install — grab the download below,
once.

Previously

0.4.0 — the brand grew up: one yellow "MD" mark across the dock icon, in-app logo, site
favicon, and munderdiffl.in; the landing page rebuilt around real screenshots and a live
pixel-floor sim; pricing reframed around Private Cloud and Private Network.
0.3.9 — Settings → General answers "am I up to date?" directly, and removes 0.3.8's
usage-limit guard that never released held agents.
0.3.8 — memory condensation works for the first time; a Triggers hub; one compaction
schedule instead of two; a readable commit history.
0.3.7 — auto-update actually runs: a CommonJS/ESM import bug meant the native updater never
fired in any packaged build since v0.3.4, and the failure was swallowed by a catch.
0.3.6 — a machine with nothing on it can run agents: Node and npm install themselves
(verified against the official SHASUMS256.txt), hooks stopped dying with exit 127, ~/dev/foo
paths resolve, and the office floor rebuilds itself after losing its GPU context.
0.3.5 — a send now escape hatch for a paused message queue, and a compact Command
Center header.
0.3.4 — talk mode that knows the floor, markdown previews, the IDE git time-machine
(history + branch compare), redesigned Settings, xAI Grok and Kimi Code, and a single
delivery gate for every automatic writer. Community work by
@gts-47 and @qschmick.
0.3.3 — the built-in Monaco IDE, and GitHub Copilot CLI as the first community-contributed
engine (@anxkhn).
0.3.2 — Realtime Michael: a voice channel to the GOD orchestrator.
0.3.1 — three more engines: OpenCode, Crush, and pi.dev.

Full history in the CHANGELOG.

Thanks

This release carries community work. All 23 of these landed in v0.4.5:


#157	@gpechieu	inherited Claude Code session markers are stripped from an agent's PTY env
#158	@gpechieu	semantic memory works on Apple Silicon again: embeddings are pinned to CPU on macOS
#159	@gpechieu	reliable spawn, teardown and floor cards for the workers Michael hires
#165	@rajpreetcodes	a `~` in the harness home folder resolves, so setup cannot die on ENOENT
#171	@KrushanPatel	CONTRIBUTING.md matches the platforms the app actually supports
#175	@rekcilyssup	a main-process watchdog wakes an idle worker sitting on an undrained inbox
#176	@FenjuFu	Gemini CLI joins the engine list
#177	@TTAWDTT	each agent's live context-window occupancy shows in the roster
#178	@gpechieu	a god-hired worker gets a floor card, and it archives when the worker dies
#179	@kdahal7	`statAbs` expands `~`, so a path resolves the same way on every platform
#181	@TTAWDTT	webhook dispatch goes through an atomic add, so a stale ledger cannot overwrite it
#184	@TTAWDTT	the per-agent steer queue is capped, which bounds memory on a stalled agent
#185	@hyperstream-pro	mail to an id with no inbox is bounced and logged instead of dropped
#186	@BUGHUNTER-SACHIN	tests cover the Notifications and Stop idle-detection branches
#187	@hyperstream-pro	a stale inbox nudge no longer wakes an agent against an inbox that is already empty
#190	@swarnendu19	agent names can be edited after spin-up
#199	@amey-op	the Antigravity queue no longer wedges for 30 seconds
#203	@lifelmy	the Crush config env points at the agent's own directory
#210	@chaitanyagiri	the art licence claims are true again, Modern Interiors is bought
#214	@pontusm	Windows agent processes quit when the app does
#219	@chaitanyagiri	engine availability is checked before Michael's engine is committed
#226	@chaitanyagiri	the floor reports lifetime spend, not spend since the last app restart
#227	@scy73	the renderer runs inside Chromium's sandbox

Four of the fixes above are @gpechieu's and three are
@TTAWDTT's. Thank you, and thank you to everyone who reviewed a
pull request or filed the bug that led to one.

⤓ Downloads

Latest builds for every platform. The macOS build is universal, one DMG that runs on both
Apple Silicon and Intel.

🍎 macOS

Build	File
Universal (Apple Silicon + Intel)	`Munder-Difflin-0.4.5-mac-universal.dmg`

🪟 Windows

Build	File
Installer (x64), recommended	`Munder-Difflin-0.4.5-win-x64-setup.exe`
Portable (x64, no install)	`Munder-Difflin-0.4.5-win-x64-portable.exe`

🐧 Linux

Build	File
AppImage (x86_64)	`Munder-Difflin-0.4.5-linux-x86_64.AppImage`

📦 Source

Source code (zip) ·
Source code (tar.gz)

Verify your download: SHA256SUMS.txt — then shasum -a 256 -c SHA256SUMS.txt (macOS/Linux) or Get-FileHash (Windows).

The filenames above carry a version number, so they only resolve while this is the
latest release. If a link 404s you are reading an old release page — grab the current
build from the releases page,
which is always right.

First launch

macOS — the build is signed with a Developer ID (hardened runtime). If macOS
still shows an "unidentified developer" warning on first open, right-click the app →
Open → Open once. After that, the first time agents touch a folder you'll get a
single macOS privacy prompt for Documents/Desktop/Downloads — allow it once and the
grant sticks (it covers the claude agents the app spawns), because the grant is bound
to the app's stable signature.
Windows — not code-signed yet; SmartScreen may show "Windows protected your PC" →
More info → Run anyway.
Linux — make the AppImage executable: chmod +x Munder-Difflin-*.AppImage, then run it.

Requirements

macOS 12+, Windows 10/11, or a modern Linux desktop
Claude Code installed and on your PATH (and/or the Antigravity agy or OpenAI codex CLI for those providers)
A Claude Code subscription (Munder Difflin drives your existing claude CLI — it doesn't replace it)
For Realtime Michael (voice): your own OpenAI key with Realtime API access — without it the Talk button stays disabled

🛠 Build from source

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

Node 18+ and a C/C++ toolchain are required (Xcode CLT on macOS, Build Tools on Windows).
To produce installers yourself: npm run dist (current OS), or dist:mac / dist:win / dist:linux.

What's inside

The simulation — every agent is a real claude (or agy / codex / local-provider) pseudo-terminal, visualized as an avatar on a watchable office floor (node-pty · xterm.js · Pixi.js).
Talk to Michael — a realtime voice channel to the GOD orchestrator that reads the hive and acts behind spoken echo-back confirmation, BYOK and main-only.
Selectable engines + per-hire capabilities — each hire (and Michael himself) runs on a pluggable engine, with its own consented skills + MCP catalog.
MemPalace — a markdown-first, semantic memory layer the whole office shares; cross-session recall in ~12ms.
GOD orchestrator + hive — one agent you talk to routes work to specialists and stays autonomous, escalating only critical items (spend, destructive ops, scope) to you natively, through human-in-the-loop prompts. It can also spawn an ephemeral worker straight from Slack and tear it down safely.
Plugs into your setup — your subscription, settings, skills, and MCP servers, plus an integrations registry with a write-only secret broker; /remote-control reaches the whole floor from your phone.

Full notes in the CHANGELOG.

Links

Website ·
Repo ·
Issues ·
Contribute ·
Become a patron

MIT-licensed. An affectionate parody — not affiliated with NBC's The Office or Dunder Mifflin.

Navigation Menu

v0.4.5

Choose a tag to compare

Sorry, something went wrong.

Sorry, something went wrong.

Uh oh!

No results found

Munder Difflin v0.4.5

→ munderdiffl.in · see it in action, then grab a build below

What's new in 0.4.5

A note on Pro

Thanks

Thank you for being here early.

The things you trusted and were quietly wrong.

Still new in 0.4.4 · Windows joins the floor

Still new in 0.4.3 — Michael is the logo

Still new in 0.4.2 — Anonymous usage stats, done in the open

Still new in 0.4.1 — The app says what the site says

Previously

Thanks

⤓ Downloads

🍎 macOS

🪟 Windows

🐧 Linux

📦 Source

First launch

Requirements

🛠 Build from source

What's inside

Links

Contributors

Uh oh!