/style concise — and every reply from now on is terse. /style step-by-step — and the model narrates numbered steps. /style off — back to the project default. One command per session, persisted across restarts, zero changes to the agent loop.

✨ Features

🚀 Quick start

# 1. Install — the package is a bundle layer, so one command composes
#    storage + storage-json + storage-domain + the plugin row:
dsh plugin --profile <name> add dsh-output-styles

# 2. Boot and switch
dsh --profile <name>
/style               # → output style off, then one line per style
/style concise       # → switched to concise
/style Diagrams first  # → names with spaces work too
/style off           # → back to the project default

The layer is idempotent over web profiles (insert-by-id replaces same-id rows), which compose storage in box. For the Web picker, add the client row to the profile:

- id: output-styles-client
  name: 'dsh-output-styles/client'

🎬 Demo

You > /style
      output style off
      concise — Terse, direct answers — minimal prose, no preamble. (Daily coding work, tool-heavy sessions, or when prompt length matters.)
      explanatory — Educational answers with short "Insights" that teach as you work. (Learning a codebase, onboarding, …)
      formal — Formal, precise prose with complete sentences and defined terms. (Reports, documentation, release notes, …)
      step-by-step — Numbered reasoning steps with explicit intermediate results. (Debugging, design decisions, …)

You > /style concise
      switched to concise

You > 请只用一句话介绍你自己。
AI  > 我是运行在 DeepSeek Harness 插件化平台上、基于 deepseek-v4-pro 模型的 AI 编码代理。

🧠 How it works

flowchart LR
    U[You type /style concise] --> C[command registry]
    C -->|command/run logged| L[(session log)]
    C -->|put {style, source}| D[(output_style domain)]
    D --> R[OutputStyleRuntime]
    R -->|body at every assembly| S[systemPrompt section order 90]
    S --> M[Model request]
    M -->|full system prompt| H[request/header logged]

Everything the model sees is reconstructable from the session log — no new session event type, no agent-loop changes. The style name comes from command/run, the exact injected text from request/header, and the provenance marker { kind: 'plugin', plugin: 'dsh-output-styles' } rides in the domain record. Styles apply to the main conversation only; subagent sessions keep their own prompts (matching Claude Code).

⚙️ Configuration

Every tunable is a validated Schemastery Config field (invalid values fail the load):

📚 Style library

---
name: concise
description: Terse, direct answers — minimal prose, no preamble.
whenToUse: Daily coding work, tool-heavy sessions, or when prompt length matters.
keep-coding-instructions: true
---

You are in the concise output style for this conversation.
- Lead with the direct answer; skip preamble, restatements, and filler.
- 回答语言跟随用户语言：中文提问用中文回答，英文提问用英文回答。

Frontmatter fields:

{ "name": "explain", "description": "Explain like a teacher.", "prompt": "Teach in small steps." }

⌨️ Command reference

🖱️ Web picker

The dsh.client entry decorates the host /style command's bare invocation with a popup picker: an "off" row plus one row per library style (description · whenToUse), the active row marked. Picking submits /style <name> through the command Remote, so every switch keeps the host's durable command lifecycle and the style projection stays the single displayed fact.

🔍 Conflict check

Screened against the DSH ecosystem before development (2026-08 snapshot): no style/output-style repository under topic:dsh-plugin, no output-style category in the four major awesome lists, and no entry in the dsh-hub catalog. The closest neighbors — dsh-soul-md (persona) and dsh-claude-marketplace (output styles explicitly deferred to v0.2+) — are adjacent, not conflicting.

🆚 Differences from Claude Code

🧪 Development

pnpm install
pnpm run typecheck   # both tsc projects
pnpm test            # vitest — 87 tests
pnpm run build       # lib/ artifacts (host + client bundles)
pnpm pack            # tarball for dsh plugin add

Structure follows the omdsh-dev/plugin-template: src/index.ts (plugin metadata), src/config.ts (schema), src/runtime.ts (runtime service + activation), src/invariant.ts (invariants), src/client/ (Web picker), styles/ (built-ins).

📄 License

Apache-2.0 © 2026 dsh-output-styles contributors

_{Topics: dsh · dsh-plugin · deepseek-harness · output-styles · claude-code}