dsh-prompt-customizer

A DeepSeek Harness (dsh) plugin that lets you control the system prompt and the tool catalog from a settings-panel UI.

Plugin-injected prompt sections (from other plugins) can pollute your system prompt. This plugin lets you block, replace, inject, and reorder prompt sections by name, and hide tools from the model catalog — all live, without touching the other plugins.

Features

• Prompt sections
  • Block a section by name (removed from the assembled system prompt).
  • Replace a section's text (the original text is echoed for editing).
  • Inject brand-new sections.
  • Reorder sections with ↑/↓ arrows or drag & drop (HTML5). Order is stored as a virtual 0-based index, so there are never duplicate or fractional orders.
• Tools
  • Blacklist (exclude): hide the listed tools.
  • Whitelist (include): keep only the listed tools (wins over exclude).
  • Only the model-facing catalog is affected — tools and routes keep working.
• Presets
  • Save the current customization as a preset (full snapshot).
  • Apply a preset: same-name sections are overridden, preset-only sections are added, and current sections outside the preset list are disabled by default.
  • Export / Import presets as JSON (full snapshot).
  • Presets store relative order (each section records the section it follows), so they stay portable across prompts with different section sets.
  • Multiple presets can be stored locally; only one is active at a time.

Installation

Install from npm:

dsh plugin add dsh-prompt-customizer

Or install from a local checkout:

dsh plugin add /path/to/dsh-prompt-customizer

After installation, open the dsh web UI → Settings → 提示词定制 (Prompt Customizer) in the sidebar.

Usage

Prompt sections tab

Each row shows a prompt section with:

• A checkbox to block/unblock it.
• A replace button to edit its text (the original text is pre-filled).
• ↑/↓ arrows and a drag handle to reorder it.
• The #N badge shows the section's virtual order (0-based position).

The 注入新段 (Inject section) box at the bottom adds a brand-new section by name, order, and text.

Tools tab

Toggle tools to hide them (blacklist), or switch to whitelist mode to keep only the checked tools.

Presets tab

• Save current as preset — capture the current sections/tools customization.
• Apply — activate a preset (overrides same-name sections, adds preset-only sections, disables current sections outside the preset).
• Export — download the preset as JSON.
• Import — load a preset JSON file (same-name presets are skipped).

Configuration

The plugin stores its config in the dsh settings document under the prompt-customizer namespace (~/.dsh/settings.yaml). You can edit it directly:

prompt-customizer:
  # Block these prompt sections by name.
  sections:
    - plugin:some-plugin
  # Replace a section's text by name (original order kept).
  replace:
    system: 'You are a helpful coding assistant.'
  # Inject / override sections (name + order + text).
  inject:
    - name: tool:read
      order: 0
      text: ''
  # Tool catalog filtering.
  tools:
    exclude: []
    include: []

Field	Type	Description
sections	string[]	Prompt section names to block.
replace	Record<string, string>	Replacement text per section name.
inject	{name, order, text}[]	Sections to inject or override (order controls splice position).
tools.exclude	string[]	Tool names to hide.
tools.include	string[]	When non-empty, keep only these tools (wins over exclude).

Development

npm install
npm run check   # typecheck + build

The browser half is built with tsdown into client/client.js (a __ModuleLoader__ factory bundle). The host half lives in lib/.

License

MIT