dsh-custom-mode

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Edit a DeepSeek Harness (dsh) custom mode: system prompt, base mode, and plugin switches. Keep more than one assistant. 自定义模式、系统提示词、提示词编辑。

Install

Pin the version. A bare name can install an older build during pnpm's release cooldown. Details: docs/TROUBLESHOOTING.md.

dsh plugin --profile web add dsh-custom-mode@2.2.2

Restart the process that serves the profile. The version on the settings page is the one that is running.

Desktop app: install from the in-app Plugins page. The CLI cannot modify profiles/desktop.

On Windows, install.sh is bash and it needs a dsh executable on PATH. Otherwise use the dsh shipped with DeepSeek Harness, or node node_modules/@deepseek-ai/dsh/lib/bin.js.

Use

1. Open Settings → Custom mode.
2. Edit the system prompt. Save is directly under the editor.
3. A new session uses this assistant when settings.yaml has no agent-presets.default yet. An existing value is left as it is.

The prompt is prompt.md. The next time a model step is assembled, that file is read again. History can load an older draft into the editor; loading does not write. A save computed against an older copy is refused when the file changed underneath. The model can change the same file only through custom_prompt, which asks first.

The page is two branches. This assistant edits the one you have open, and all five base modes can be chosen. New assistant writes only when you click New assistant: Coding, Writing, and Chat stay selectable, and only the official Standard mode is lit. The other four official modes are dim and cannot be chosen there.

Boundaries

• It does not replace Standard, PTC, Minimal, or Creator.
• It does not ship a role-play preset.
• It does not run in the desktop profile from the CLI. Headless mode will not start a session that uses an agent preset.

Compatibility

Declared range: >=0.1.5-rc.2 <0.2.0-0 || >=0.1.6-alpha.1 <0.2.0-0 || >=0.1.7-alpha.1 <0.2.0-0 || >=0.2.0-0 <0.3.0-0 || >=0.2.1-alpha.1 <0.3.0-0

The unit suite also passed under WSL2 Ubuntu 26.04 (Node only, no dsh process, no browser). That is not a Linux desktop result.

Docs

• docs/TROUBLESHOOTING.md — wrong version installed, base mode unavailable, half-finished upgrade
• docs/ARCHITECTURE.md — where the prompt is read, and which host calls this package depends on
• docs/PUBLISHING.md — tags and release
• CONTRIBUTING.md — people
• AGENTS.md — agents

License

MIT