Download & double-click
Unzip, double-click Passfair, your browser opens. Node.js is built in; no installer, no admin rights.
YOUR AIs, FINALLY TALKING TO EACH OTHER.
Make it with Claude and GPT.
Ship it with Muse.
One brief. Claude drafts for correctness, GPT polishes the expression, Claude reviews and sends it back until it passes — then the finished work goes to Muse to publish.
If publishing hits a problem, Muse sends it straight back and the team fixes it. You stop being the messenger between your AIs. Runs on your computer with your own API keys.
Mac · Windows · nothing else to install · no account · no telemetry
THE LOOP
MAKE.
CHECK.
SHIP.
CLAUDEGPTMUSE
Problems come back on their own.
Fixes go out on their own.
Your keys never leave your computer.
Encrypted on your machine. Sent only to the provider you chose,
never to us.
Your drafts stay on your computer.
Briefs, drafts, reviews and the full record live in a local folder
you can delete.
Only what you hand off travels.
A deliverable you send to Muse passes through our encrypted relay
for at most 7 days — and only when you (or your rule) say so.
THE PROBLEM WE SOLVE
You have great AIs.
You are their copy-paste.
Claude writes. You paste it into ChatGPT to check. You paste the fixes back. Muse publishes, hits an error, and you carry that back too. Passfair runs that whole loop by itself — and keeps the record.
HOW EACH AI CONNECTS
Exactly what is wired,
and how.
Two kinds of connection: models by API key (they produce), and distributors (they publish).
| Your AI | Role in the loop | How it connects | Status |
|---|---|---|---|
| Claude | Plan · draft · review | Anthropic API key (console.anthropic.com) | Supported |
| GPT (the model behind ChatGPT) | Draft · polish | OpenAI API key — not a ChatGPT subscription | Supported |
| Gemini | Any role | Google AI Studio API key | Supported |
| Claude Desktop · Cursor | Hand a brief in, fetch the result | MCP connector bundled with Passfair | Supported |
| Muse (your own account) | Places briefs · publishes · reports problems | Agents Fair hand-off relay + Muse connector; pairing by a one-time code | Relay live · connector awaiting Meta review |
Until Meta approves the connector, use Copy for Muse on a finished job and paste any publishing error back into Passfair — the fix loop is identical, only the carrying is manual.
HOW IT WORKS
Five minutes from download
to a reviewed, shipped
deliverable.
Demo mode shows the whole loop with no key and no cost. Add keys when you are ready.
Connect your models
Anthropic, OpenAI or Google — one or all three. Encrypted on your machine, verified with a tiny test call.
Pick a team preset
“Make & ship”: Claude for logic, GPT for polish, Claude to review. Or set each role and speciality yourself.
Brief → reviewed work
Write the brief (or let Muse place it). Watch drafts, reviews and fixes appear on one timeline.
Hand off to Muse
Muse publishes. If anything fails, the error returns to Passfair and a fixed version goes back out — no copy-paste.
DOWNLOAD
Get Passfair.
Free · full source included in the download · v1.0.0
1 / Download for your computer
Unzip, double-click, done. Node.js is built in — nothing else to install. About 40 MB.
Not sure which Mac? → Apple menu → About This Mac: “Apple M…” means Apple Silicon.
If your computer shows a warning the first time (the app is
new and not yet widely known): Mac — right-click
Passfair → Open → Open; or System Settings → Privacy
& Security → Open Anyway. Windows — “Windows protected
your PC” → More info → Run anyway. This is the same file you just
downloaded from agentsfair.ai.
Advanced: script version (needs Node.js 24, Linux too)
agentsfair-passfair.zip
(≈250 KB). Requires
Node.js 24+. Run start-windows.cmd /
start-macos.command / start-linux.sh.
Same app, same source.
2 / On your phone · open source
The same loop as an iOS and Android app: paste your keys once, they stay in the phone's keychain. The mobile app is open source under Apache-2.0.
Source on GitHub ↗APP STORE · IN REVIEW
3 / Optional: hear about updates
Also an MCP server
Your chat assistant can hand a brief to Passfair and fetch the
result — no copy-paste. Add the bundled
studio-connector.mjs to Claude Desktop, Cursor or any
MCP client; the guide inside the app has the exact configuration.
What it does not do
No browsing, files, email, payments or publishing — agents only write and critique text. It does not control other apps on your computer. It does not guarantee correctness; verify facts before use. Provider charges go to your own accounts.
FAQ
Questions people ask first.
Why did you build a connector at all?
Because the slowest part of working with several AIs is you: copying Claude's draft into ChatGPT to check, pasting the fixes back, carrying Muse's publishing error back again. The connector removes the carrying. Models talk through Passfair; Muse talks through the relay; you read the result.
How do I use it with Muse, step by step?
In Passfair: API keys → Distributor → Pair with Muse. You get a one-time code. In Muse: connect “Passfair” and enter the code. From then on you can say to Muse “ask Passfair to write…”, Muse collects the reviewed result and publishes it, and if publishing fails Muse reports the problem back; Passfair fixes and delivers a new version. Until the connector is approved by Meta, press Copy for Muse and paste errors back by hand — same loop.
What does the relay store, and for how long?
Only what is handed off: the brief Muse places and the finished deliverable Passfair sends, encrypted at rest, deleted after 7 days or when you unpair. Never your API keys, never your drafts in progress. The relay cannot reach into your computer; Passfair polls it.
Is my data sent to Agents Fair?
Not unless you hand something off. Passfair runs on your computer; model calls go straight to the provider you chose. Pair with Muse and the finished deliverables you hand off pass through our encrypted relay for up to 7 days. Your email, if you give it above, is the only other thing we keep.
How much does a run cost?
Nothing to us. Providers bill your own API accounts; a typical three-round job makes five to seven model calls. Demo mode is free.
Is it open source?
The mobile app (iOS and Android) is open source under the Apache License 2.0: github.com/flourishjuan/passfair. The desktop download contains its complete, readable source code under a license that lets you use, modify and run it for your own business. The Passfair name and logo are trademarks and are not part of either license.
How is this different from Agents Fair Connect?
Connect is our hosted pilot workspace where three API-backed roles (Analyst → Creator → Reviewer) hand work forward once. Passfair runs on your computer, uses the roles Planner → Worker → Reviewer, and loops: the Reviewer sends work back until it passes.
Can it replace my own checking?
No. A second model catches many mistakes, especially when it is from a different vendor, but not all. Treat the result as a strong draft with a built-in review, and verify facts.
Which models?
Any model name your provider account can access. Defaults are set for Claude, GPT and Gemini and can be changed in settings.
中文用户？
程序内含完整中文说明（Guide / 中文说明），安装、加 Key、运行、接入 Claude/Cursor 都有逐步指引。