Guides and field notes on DeepSeek Harness · verified against dsh v0.1.0-rc.7
DSH is the new open-source challenger; Claude Code is the polished incumbent. An honest comparison of philosophy, model lock-in, extensibility, maturity, and cost.
DeepSeek open-sourced its agent harness in August 2026 and the ecosystem exploded. What DSH actually is, how the everything-is-a-plugin architecture works under the hood, and where presets fit in.
A hands-on walkthrough of the dsh preset format, matched line-for-line to the official built-in presets — persona rows, tool packages, groups, and how to verify it works.
