DeepSeek opens a four-mode agent harness

DeepSeek has released the developer preview of dsh, an open-source agent harness with 4 operational modes: standard, code, creative, and minimal. The official GitHub repository says its architecture treats every component as a plug-in, but warns that compatibility-breaking changes are still coming; reporting on the launch frames it as DeepSeek moving beyond models toward the agent layer. Builders should file this as an open orchestration surface to watch—not a production framework to standardize on until the preview settles—alongside the wider economics of China’s open-model push.