Trying the New DeepSeek Harness

After building such great Pro and Flash models, DeepSeek has decided to step into the harness game as well. Their harness is based on this philosophy of "everything is a plugin", much like the Pi coding agent. I have been using Pi with DeepSeek models for months now, so I was curious to see DeepSeek's own take on the idea. All tech news and influencers are talking about the new DeepSeek harness, so I had to give it a try. And my experience so far is pretty good to be honest. In this post, I will explain how I installed and set up the harness for myself and what I liked and disliked about it. What is the DeepSeek Harness? The DeepSeek Harness or dsh is an open-source agent harness from DeepSeek AI, and that tagline is not just marketing – every part of the product, from the model adapter to the session log to the agent loop itself, is a plugin. It runs on Cordis, so there is no core to patch. You swap a part by mounting another plugin beside it. The agent can read and edit workspace…