DeepSeek Harness: Creator Mode

DeepSeek Harness: build your own plugins with Creator Mode

Links

• Official page (desktop app for macOS Apple Silicon and Windows 64-bit): https://deepseek.com/en/harness/
• GitHub (MIT license): https://github.com/deepseek-ai/deepseek-harness

Install (web UI, needs Node.js)

npx @deepseek-ai/dsh web

Your first plugin in Creator Mode

1. Pick "Creator mode" from the mode menu.
2. Describe what you want in chat. The prompt from the launch video:

Create a DSH plugin with a left sidebar entry. Create a sticky note wall plugin so I can easily capture ideas anytime.

3. The agent writes and installs it; it shows up as a new tab in the left sidebar.

Good to know

• The app is free; the model you run is billed per token (DeepSeek V4.1 Flash by default). You can also use a local model through Ollama: ollama launch dsh (it installs @deepseek-ai/dsh if needed).
• It's a preview: the GitHub README warns about compatibility-breaking changes.

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