DeepSeek’s public-preview Harness is available for Apple Silicon macOS and 64-bit Windows, with an open-source, MIT-licensed repository and a web interface. Its Cordis-based architecture puts tools, skills and interface extensions into plugins. Agent teams and scheduled work are among the exposed features, with auto-approval marked experimental.
For someone building an agent application, the inspectable plugin boundary is the interesting artifact: extensions can reach beyond prompts into tools and the interface itself. The page supplies no independent task-success comparison or dated model release. Official download and project links · Source repository.