DeepSeek Harness goes open source with an everything-is-a-plugin architecture
DeepSeek Harness Desktop for macOS and Windows
DeepSeek has launched a public preview of DeepSeek Harness, an open-source agent harness for macOS and Windows. Built on Cordis's 'everything is a plugin' design, it handles everyday work, coding, research, and background tasks, and lets you build new plugins through chat in Creator mode. Install via npx or from source, and extend it with community plugins.
DeepSeek Harness is now in public preview worldwide and open source, with composable plugins that extend what agents can do.
- ssivark
This page doesn't emphasize the cordis architecture [1], but that's the most exciting thing about this -- not just yet another harness. It has the potential to make this into something like the emacs of harnesses! I think this might be particularly potent for long-running agents.
- Kuyawa
I just installed DeepSeek Harness for MacOS and it's a beast. The same great harness as before but now is an app you just click on your dock to run
All settings and workspaces are transferred so you don't lose anything, the only thing it lacks is a way to increase/decrease font size with cmd + and cmd - so I'll work on a plugin for that
I can't be happier
Edit: Asked DSH for a plugin to increase/decrease font and it delivered. Love it. Then asked for a plugin to ring a bell on questions and tasks finished, of course it delivered flawlessly. The same plugin architecture, extensible by the same AI
- scuppernong
https://frontierharness.org/ allegedly this is on the Pareto frontier, though I don't know how good of a benchmark this really is. it seems to focus on one-shot type tasks, whereas the real utility of one harness over another seems to make itself known in long running tasks.
also this is a very limited static snapshot with one model as backend, I wish there were more consistently refreshed and diversified harness benchmarks.
- throwa356262
Still in preview, but I think this update is only meant to simplify the installation process.
Not providing DSH as a simple to install package resulted in an unknown third party packaging it with some modifications and SEO the hell out of it to always come on top in Internet searches (even above DS):
deepseekharness[.]io
Could be just an ambitious engineer, but could equally easily be ran by cyber criminals or NSA.
- hypfer
The "everything is a plugin" concept is also what the Juggler harness does.
I'm not yet sure if it is really sensible long-term, but it is definitely now while we're still trying to figure out what exactly we want and need from LLMs and harnesses.
- wg0
DeepSeek harness is the OpenCode (better than OpenCode) of the web/desktop medium.
Good things about it are that it is extremely lightweight and fast. The communication between sub agents is two way in that a sub agent can midway send a message to parent and the parent can send a message midway to change the course of action of a sub agent and while this is happening, you can sitll continue talking to the model on the main thread.
Downside of DeepSeek is that it is constantly in flux which is understandable and they make it very clear themselves that the breaking changes are to be expected.
- Xunxi
Interesting! Pretty clean UI.
Captcha had me ruffled at the onset as I am slightly visually impaired and couldn't pick out the somewhat grainy images. It seems to be the standard now.
- noduerme
Sweet, I really wanna put backdoors in every account I have access to.