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Jz Desk
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Jianzhi AI

An AI workspace that does the work

Jz Desk reads your files, makes the change, runs the command, and shows you the diff — in one window. Bring your own GPT account; nothing goes through us.

You bring the model account. Jz Desk needs an OpenAI API key — setup is four steps and takes a few minutes.

Download the desktop app Get it working

Get it working

Jz Desk ships without a model account of its own, so there is a little setup. Do these four things and it works.

  1. Step 1

    Get an API key

    Create one at platform.openai.com under API keys. It needs Responses API access, on an account with billing set up. Copy it once — OpenAI will not show it again.

  2. Step 2

    Download and open Jz Desk

    On macOS, open the disk image and drag Jz Desk to Applications. On Windows, run the installer. The agent is bundled inside, so there is nothing else to install.

  3. Step 3

    Paste your key

    The setup wizard opens on first launch and asks for it. The key is written to ~/.jz-code/auth.json, readable only by you.

  4. Step 4

    Pick your model

    Open Settings, choose a model your account can reach, and start a chat.

    ~/.jz-code/config.toml 
    model = "gpt-5.6"
model_provider = "openai"
Full setup guide, including what to do when it does not work →

What you get

Your account, your key

Jz Desk talks to your OpenAI account directly with a key you control. No middleman, no per-seat pricing, nothing to sign up for here.

Fast to install from anywhere

One command pulls a single binary from our own servers — quick from mainland China, no app store, no package manager.

It asks before it acts

Commands run in a sandbox, and anything that touches the network or files outside your project asks for approval first. You set how much rope it gets.

You can see what it costs

`/billing` itemizes token usage per run, so a long session never surprises you on your provider's invoice.

Questions

What does it cost?
The app is free. You pay your model provider directly for what the model uses — Jz Desk never sits between you and that bill. `/billing` shows a per-run breakdown.
Which platforms are supported?
macOS (Apple Silicon and Intel) and Windows x64. Linux is not supported yet.
Does my code leave my machine?
Only what the agent sends as context for the request you asked for, and it goes straight to the endpoint you configured. We never see it. Everything else runs locally.
Is this related to Codex?
Yes. Jz Desk is built on OpenAI's open source Codex agent core (Apache-2.0), with model traffic routed through Jianzhi AI and a desktop app of our own.

Start with one command

Install it, paste your key, and give it something to do.

Download the desktop app