SingGuard-NSFA: Open-source guardrails for agentic AI

SingGuard-NSFA is an open-source guardrail framework aimed at operational threats in agent workflows. Four models ship at 0.8B, 2B, 4B, and 9B parameters, all built on Qwen3.5 base backbones. Risk taxonomy The NSFA risk taxonomy organizes threats along the CIA triad of confidentiality, integrity, and availability.