DeepSeek Harness Explained: The Open-Source Agent Scaffolding

DeepSeek wordmark over a glowing blue circuit-board background

The short version: DeepSeek open-sourced their Agent harness, the scaffolding that turns a raw model into something that actually works in the real world. And they did it in a way that openly admits what everyone in the industry has been quietly realizing: the model itself isn’t the whole story anymore. Honestly? I spent the … Read more

DeepSeek Harness Walkthrough: Every Feature I Tested

Illustration of a whale leaping over a city beside a man at a gaming table

DeepSeek dropped something new just yesterday, August 13. Not a model this time, but an agent harness called DeepSeek Harness. They open-sourced it under MIT and put it up on GitHub (https://github.com/deepseek-ai/deepseek-harness). I spun it up last night and spent a few hours with it. Here’s what I found. Wait, I should back up. What’s … Read more

I Read Prime Agent’s Source Code. Here’s What I Actually Found

Magnifying glass over a translucent card of source code on a dark background

The hype around Prime Agent is getting ridiculous. People are calling it the next step toward AGI. Some claim that with Opus 5 it scores 95.5 percent on ARC-AGI-3, beating the human expert baseline of 95.4 percent. That is a big number. But I kept reading the same talking points everywhere, RLM, Continual Harness, prompt-as-a-variable, … Read more