Layer input/output validation around LLMs to prevent harmful outputs, prompt injection, and compliance violations in production.
Five passes over the same idea, each from a different angle. Do them in order, or jump to whichever you need.
Guardrails are the safety nets of LLM production systems. They validate inputs (detect jailbreak attempts, PII, off-topic queries) and outputs (block harmful content, enforce format schemas, prevent hallucinated citations). Tools like NeMo Guardrails, Rebuff, and custom rule engines sit as middleware between user and model. The challenge is balancing safety coverage against added latency.
