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.
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.
Quick start
Install DeepSeek Harness and run your first agent in a minute — full steps on the install guide.
- Install from npm (see the platform guide).
- Add a plugin:
dsh add <plugin-name>. - Run your first task and watch the agent work.
Guides & resources
DSH tutorial
Install, configure, use plugins, and run real tasks — step by step. →
Comparevs Claude Code
Plugins vs MCP, pricing, and which to choose — a blog comparison. →
EcosystemPlugin directory
Browse official and community DeepSeek Harness plugins. →
SetupInstall guide
DeepSeek Harness on Windows, macOS, Linux, and via npm. →
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.