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DeepSeek Harness · DSH

Everything-is-a-plugin agent framework.

DeepSeek Harness (DSH) is the open-source agent framework where every capability is a plugin. This is your independent guide — install it, learn it, compare it, and browse the plugin ecosystem.

📦 npm plugin ecosystem 🚀 open source ⚖️ vs Claude Code — compared
⬇ Install guide 📖 Tutorial →

What is DeepSeek Harness?

DeepSeek Harness (DSH) is a developer-preview agent framework released by DeepSeek in August 2026. Its defining idea is everything is a plugin — tools, capabilities, and integrations are installed as npm plugins rather than built into the core. It's positioned as an open-source alternative to Claude Code and Claude Cowork.

🧩 Everything is a plugin

Capabilities are npm packages — add what you need, nothing more.

🚀 Open source

Community can fork, audit, and extend the framework.

📦 npm ecosystem

A growing directory of official and community plugins.

What Verified means here

Verified on dshbase is not a topic count or a parseable-manifest check. It means we ran a real install test on dsh 0.1.0-rc.6 — L1–L3 for headless plugins, plus L4 web CDP when L3 reports web-only:

L1 · Install

dsh plugin add into a clean profile — the package actually installs.

L2 · Load

The profile boots and dumps config with the plugin activated.

L3 · Headless

Headless Q&A exits cleanly. If the plugin is GUI-only (web-only), we do not stop here.

L4 · Web CDP

Required for web-only plugins: live web profile + browser CDP Q&A. Pass → Verified.

7,797 of 7,797 listings are Verified today. Some other catalogs label “verified” when a plugin is merely installable from a manifest — here it means we ran it. See the audit methodology, browse the directory, or start from a verified-only scene pack.

Quick start

Install DeepSeek Harness and run your first agent in a minute — full steps on the install guide.

npx @deepseek-ai/dsh web
  1. Open http://127.0.0.1:3080 and enter your DeepSeek API key.
  2. Configure the model under Settings → Models.
  3. Choose a workspace, send a task, and watch the agent work.

Guides & resources

Guide

DSH tutorial

Install, configure, use plugins, and run real tasks — step by step. →

 Compare

vs Claude Code

Plugins vs MCP, pricing, and which to choose. →

 Ecosystem

Plugin directory

7,797 plugins — 7,797 install-tested (L1–L4). →

 Packs

Verified scene packs

Curated setups — every slot is verified, not just highest stars. →

 Build

Plugin guide

Write your first dsh plugin and register tools. →

 Trust

How we audit

L1–L4 methodology and transparent pending failures. →

FAQ

What is DeepSeek Harness (DSH)?

DeepSeek Harness (DSH) is an open-source agent framework from DeepSeek announced in August 2026. Its core idea is that every capability is a plugin installed from npm, making it a flexible alternative to Claude Code.

Is DeepSeek Harness free?

DeepSeek Harness is open source. The underlying DeepSeek API (for V4-Pro etc.) is paid, at prices set by DeepSeek.

How is DSH different from Claude Code?

Architecturally: DSH is everything-is-a-plugin (npm), while Claude Code centers on MCP servers. See the full comparison.

What language is this site in?

This site is available in English and Chinese — use the language switch in the top-right corner.