Evidence
DeepSeek Harness Deep Research: Day-One Field Test of DeepSeek's Official "Everything Is a Plugin" Agent Framework
On August 13, 2026, DeepSeek open-sourced its official Agent framework DeepSeek Harness (dsh): 32k stars in half a day, MIT license, an everything-is-a-plugin architecture, a paper-grade foundation in Cordis (a programming paradigm for spatiotemporal composability), and a runtime an Agent can modify itself.
2026/08/14 · DeepSeek Harness · Cordis · Agent Framework