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DeepSeek AI·Aug 13, 2026·Developer Preview·open source
DeepSeek Harness
DeepSeek Harness (dsh) is an open-source agent runtime framework designed for building autonomous agents. It utilizes a modular architecture where every component—including models, tools, session management, and the agent loop—is implemented as a plugin powered by the Cordis framework.
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on the blogDeepSeek Launches DeepSeek Harness Desktop Application 3 min
overview
DeepSeek Harness (dsh) is an open-source agent runtime framework designed for building autonomous agents. It utilizes a modular architecture where every component—including models, tools, session management, and the agent loop—is implemented as a plugin powered by the Cordis framework.
key features
- 01Plugin-based architecture powered by Cordis
- 02Composable runtime via profiles and bundles
- 03Durable session logging for replay and auditability
- 04Replaceable capability seams for models, tools, and sandboxes
- 05Support for both Web UI and headless execution modes
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