DeepSeek Harness (www.deepseek.com)

DeepSeek Harness has launched its developer preview, designed for agent harness developers across the globe. This innovative platform introduces a modular architecture where every component—from models and tools to sessions and UI—is a plugin that can be easily swapped or recomposed. Facilitated by Cordis's plugin system, developers can now customize their setup without altering the core source code, allowing for enhanced flexibility in creating AI agents that can effectively navigate real-world environments. This release is pivotal for the AI/ML community as it underscores a shift towards composability and traceability in AI development. Each agent run is meticulously logged, capturing vital details like system prompts, reasoning, and tool interactions in an append-only session log, which can be analyzed with features like the Trajectory view. With multiple runtime modes, including Standard, Code, Minimal, and Creator modes, DeepSeek Harness offers versatility for various testing scenarios and environments. As the platform continues to evolve through developer feedback, it represents a significant step towards more reusable and adaptable AI infrastructures.