NVIDIA NeMo Guardrails

The NVIDIA NeMo Guardrails library is an open-source Python package for adding programmable guardrails to LLM-based applications. Use it to block, alter, or validate unsafe, off-topic, malicious, or policy-violating user inputs and model responses. The library provides configuration files, Colang flows, built-in guardrails, custom actions, and integration APIs so you can add safety and control logic without rewriting your application or model backend.