3 posts tagged with "Open Source"

The model is the soul. The harness is the body.

The model thinks. The harness does.

Hi, I'm Booker.

Today I'm taking apart DeepSeek Harness (dsh), open-sourced by DeepSeek yesterday (2026-08-13).

This is not a secondhand recap. I read the source and the official docs. I'll walk through its three real design decisions, pour some cold water, and honestly tell you my first run failed.

One plugin standard, shared across seven tools.

Fig: Open Plugins — install once, works across seven tools

AI coding tools are multiplying: Cursor, Claude Code, Codex, Grok Build — each with its own plugin format. Then came Open Plugins.

It's an open standard maintained by Vercel Labs. Install one plugin, it runs across seven tools.

After more than a year of AI-assisted coding, my biggest lesson is this: vibe coding feels great in the moment, but it falls apart the moment a project gets complex. A one-line requirement, AI starts coding on its own assumptions, and what comes out is always a bit off. You ask it to fix something, it fixes that and breaks something else. A few rounds of this and your codebase has tripled in size while the number of working features barely grew.

Eventually I figured it out: the problem isn't that AI writes bad code. It's that I don't say clearly what I want.

Kiro's Spec workflow is built to solve exactly that. Let's walk through it from scratch.