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DeepSeek· Released Aug 13

DeepSeek Harness

DeepSeek's MIT-licensed open-source agent harness built on the Cordis meta-framework, where models, tools, skills, sessions and UI are all plugins. Harness Desktop for macOS and Windows followed on 2026-10-02.

QQ bridge that lets DeepSeek Harness agents chat in QQ groupsAug 25

Entries

IWAIBAOLI

@IWAIBAOLI · Aug 15

Brings the pen.dev Pencil canvas into DSH with conversation-bound workspaces and live agent edits. Lets the agent sketch and revise UI designs alongside the chat.

NekroAI

@NekroAI · Aug 15

A group-chat agent framework from the NekroAI community that runs bots across chat platforms using DeepSeek Harness as the brain. Built for persona bots in community groups.

1na-ko

@1na-ko · Aug 14

A reimplementation of the Cordis meta-framework on the JVM with revertible effects and reactive coeffects. Lets Java developers write the same plugin architecture DeepSeek Harness uses.

uson1x

@uson1x · Aug 18

Adds select, compare and score tools that produce continuous reward signals so the agent can check its own candidate answers. A research idea turned into a plugin.

DeepSeek Harness: quick answers

What can you build with DeepSeek Harness?
People have published 187 public builds made with DeepSeek Harness. The most common uses are productivity (44), coding (41), design (27), automation (20) and agents (18).
What are the best DeepSeek Harness GitHub repos?
The most-starred open-source DeepSeek Harness projects in the index are DeepSeek Harness: official open-source agent harness where everything is a plugin, dsh-desktop: Desktop app for the DeepSeek Harness plugin ecosystem where the deskto and dsh-desktop: Packaged desktop edition of DeepSeek Harness from DataElement, giving.
Are there DeepSeek Harness demo videos?
Yes: 1 video show DeepSeek Harness in use, each linked to the original post.
Where do people share DeepSeek Harness projects?
Mostly on GitHub, X and YouTube, from 174 creators between Aug 13 and Oct 4.