Guardrail

Plain-English explanation

Guardrails can check inputs, outputs, tool calls, data access, formatting, policy compliance, and human approval requirements.

Why it matters

Guardrail matters because it affects how AI systems are designed, evaluated, priced, or trusted. Knowing the term helps you ask better questions and avoid vague implementation decisions.

• Ask how it changes quality, cost, speed, or safety.
• Look for concrete examples in the workflow you are building.
• Document the tradeoff before choosing a tool or architecture.