DeepSeek Harness Fact-Checking Capabilities: Multi-Source Cross-Validation and Traceable Reporting

DeepSeek Harness (DSH) has released the fact-checking plugin `dsh-fact-check`, designed to address the hallucination problem caused by agents relying on model memory. The plugin enforces “memory-free search” and multi-source cross-validation, ensuring reliable conclusions through parallel domestic and international retrieval, adversarial reverse search, and traceability reports. It is easy to install, requires a Node.js >= 18 environment, and is suitable for building agents that require rigorous fact-checking.