NeMo Guardrails lets developers set rules for how an AI chat system should behave. You can steer conversations, block unwanted topics and add checks so that a language model stays on task and responds within the limits you define.
It is published by NVIDIA as an open-source project on GitHub and has a large developer following. It fits teams building customer-facing assistants or internal chatbots who need predictable, controlled behaviour without writing everything from scratch.
