---
title: "Against Claude Cowork, DeepSeek opens its open-source Harness to developers"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/295886943.md"
description: "DeepSeek has released a developer preview of DeepSeek Harness, an open-source agent harness designed to compete with Anthropic’s Claude Cowork. Powered by the Cordis architecture, it offers a web interface and plugin-based structure for AI agents. Released under the MIT license, the project is currently in rapid development and may undergo compatibility-breaking changes."
datetime: "2026-08-14T05:41:03.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/295886943.md)
  - [en](https://longbridge.com/en/news/295886943.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/295886943.md)
---

# Against Claude Cowork, DeepSeek opens its open-source Harness to developers

DeepSeek has opened a developer preview of DeepSeek Harness, an open-source agent harness positioned against Anthropic’s Claude Cowork. The project provides a web interface for running AI agents and uses a plugin-based structure for adding capabilities.

The project, also known as dsh, is powered by DeepSeek’s Cordis architecture and can be launched with `npx @deepseek-ai/dsh web`. DeepSeek says the preview is still changing rapidly and may introduce compatibility-breaking changes. The repository is released under the MIT license. \[IT Home, in Chinese\]

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