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Inside the Harness

Version-pinned teardowns of agent systems: the loop, tools, memory, permissions and execution boundaries, examined in the source at a named version.

The DeepSeek Harness wordmark beside the DeepSeek whale logo, in blue on a white background with faint circuit-board traces.

DeepSeek Harness Isn't a Claude Code Killer. It's Something More Interesting.

DeepSeek's open-source agent harness passed 168,000 GitHub stars in its first week. I installed it, read the repo, and ran it myself. Here is what holds up.