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How to run DeepSeek Harness in a desktop window with DeepSeek Harness Desktop

Install the desktop app and start a Harness coding session with no Node.js or terminal setup.

Credentials. You enter a provider API key in the app, so store it only in your own Desktop settings and do not paste it into shared chats or agent prompts.

Who it is forA developer or technical user on macOS or Windows who wants to try DeepSeek Harness locally and does not want to install Node.js or run dsh web in a terminal.

The problemRunning the Harness Web UI normally means installing a runtime and starting a local server by hand.

The outcomeA working Harness session in a desktop window, with the local runtime started and stopped by the app.

What you need first

  • A macOS (Apple Silicon or Intel) or Windows 10/11 x64 computer
  • A model provider account and API key for the provider you want to use in Harness
  • For iPhone: an iPhone on iOS 17 or later and the TestFlight app
  • For Android: a device on Android 8.0 or later
  • For building from source: Node.js 22.19 or newer, and Git

Steps

  1. Download the installer for your system from the latest stable GitHub Release, such as DSH-Desktop-0.5.0-mac-arm64.dmg or DSH-Desktop-0.5.0-win-x64.exe.
  2. Install and open DSH Desktop.
  3. Open Settings, then Models, and configure a provider and API key.
  4. Add or select a workspace.
  5. Start a Harness session and send a prompt.

Prompt for your agent

Using the chokwinlee/deepseek-harness-desktop repo, guide me through installing DSH Desktop on <my operating system> and starting a Harness session in the workspace <workspace folder>. Expected output: a running session with the sidebar showing a DSH Desktop version and a Harness version. Verify that the Harness version label appears before you finish.

Caveat. This is an independent community project, and DeepSeek Harness itself is a developer preview that may introduce breaking changes.

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