dsh-think-any-lang
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      !简体中文
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A DeepSeek Harness plugin that adds a Thinking Language dropdown under Settings → General, letting you choose which language the model uses for its reasoning / chain of thought (中文, English, 日本語, 한국어, Deutsch, …). The final reply stays in the user's language.
<p align="center"> <a href="#screenshots">Screenshots</a> · <a href="#features">Features</a> · <a href="#how-it-works">How it works</a> · <a href="#installation">Installation</a> · <a href="#usage">Usage</a> · <a href="#development">Development</a> · <a href="#publishing">Publishing</a> · <a href="#star-history">Star History</a> </p>
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Screenshots
<table> <tr> <td align="center" width="50%"><img src="screenshots/01.webp" alt="Thinking language selector in Settings → General"><br><b>Selector in General settings</b><br><sub>Pick it right from the settings page</sub></td> <td align="center" width="50%"><img src="screenshots/04.webp" alt="The thinking-language selector box"><br><b>The selector box</b><br><sub>Click to expand and pick a language</sub></td> </tr> <tr> <td align="center" width="50%"><img src="screenshots/02.webp" alt="Expanded language dropdown"><br><b>All languages in one dropdown</b><br><sub>off plus 12 languages in one list</sub></td> <td align="center" width="50%"><img src="screenshots/03.webp" alt="dsh-think-any-lang in the plugin list"><br><b>In the plugin list</b><br><sub>Listed under plugin management after install</sub></td> </tr> </table>
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Features
- Settings → General → Thinking Language: a dropdown to pick the language the model thinks in.
- Zero latency, zero extra calls: implemented as a system-prompt instruction (
systemPrompt.section) — no extra model calls or response delay like "translate the reasoning" approaches. - Instructions written in the target language: each instruction is written in its own language (e.g. the English instruction is written in English), which improves model adherence.
- Persisted: the choice is stored in the user settings document (settings service) and survives restarts.
- Plain JS, no build step: both the host and browser halves are hand-written JavaScript; install straight from GitHub with zero friction.
Supported languages: off (follow default, no instruction), Simplified Chinese, English, 日本語, 한국어, Deutsch, Français, Español, Português, Русский, Italiano, العربية, हिन्दी.
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How it works
| Half | Responsibility |
|---|---|
index.js (host half) | Registers the think-any-lang settings namespace (language field, enum, default zh); watches for changes and mounts systemPrompt.section (named think-any-lang) when non-off, unmounts on off; also registers a private loopback RPC channel /think-any-lang (get/set) that the browser half uses to read/write the namespace |
client.js (browser half) | Registers a settings.general.item row via the window.__ModuleLoader__.load contract; renders the dropdown and reads/writes the setting through the host half's /think-any-lang RPC channel |
> Why a private RPC channel instead of the settings RPC surface? dsh-host-apiproxy only exposes an explicit allowlist of settings namespaces to configuration clients (WEB_SETTINGS_NAMESPACES / PRODUCT_SETTINGS_NAMESPACES); a third-party namespace answers settings-not-exposed, so the selection would never persist. The browser half therefore talks to a private channel registered in-process (ctx.connection.rpc.handle), and in-process ctx.settings access is not filtered by that allowlist — persistence and the systemPrompt linkage stay unchanged.
> The language table is maintained in two places — index.js (instruction texts) and client.js (display labels): the browser factory's require only resolves platform modules and cannot read local modules, so each half keeps its own language view. Keep both files in sync when adding a language.
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Installation
Requirements: dsh CLI installed with an initialized profile (dsh plugin --profile <name> add auto-initializes).
From GitHub (recommended)
dsh plugin --profile web add github:lco117/dsh-think-any-lang> The package is pure JS with no prepare build script, so no pnpm ≥10 allowBuilds approval is needed — install straight from GitHub. Pinning to a commit is recommended as in the official docs: github:lco117/dsh-think-any-lang#<commit-sha>.
From a local directory (development)
dsh plugin --profile web add ./dsh-think-any-langVerify
dsh --profile web --dump-config # should show a "# == dsh-think-any-lang" layer---
Usage
1. Start dsh web. 2. Open Settings → General. 3. Pick a language in the Thinking Language dropdown (default: Chinese). 4. Subsequent model calls receive the thinking-language instruction in the system prompt; DeepSeek reasoning models typically output reasoning_content in the chosen language.
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Development
dsh-think-any-lang/
├── package.json # declares dsh.bundle and dsh.client
├── cordis.patch.yml # plugin row: mounts both halves of this package
├── index.js # host half: settings namespace + systemPrompt.section
├── client.js # browser half: settings row UI (hand-written factory bundle)
├── README.md # 中文说明
├── README.en-US.md # English docs
└── screenshots/ # README screenshots (webp)---
Tech Stack
| Category | Tech |
|---|---|
| Plugin platform | DeepSeek Harness (DSH) |
| Plugin framework | Cordis |
| Language | JavaScript (ESM) |
| Schema | @deepseek-ai/schemastery |
| Build | None (plain JS, install straight from GitHub) |
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License
[MIT](LICENSE) © 2026 lco117
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⭐ Star History
If this project helps you, give it a ⭐ to help more people discover dsh-think-any-lang.
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