Reference · Glossary

Guardrail metric

A **guardrail metric** triggers pause or rollback when AI quality, safety, or cost crosses a red line.

#When to use

Alongside north-star metrics — e.g. hallucination rate, PII leak count, spend per user.

As optional “nice to have” dashboards after launch.

“Citation rate drops 30% day-over-day → halt canary.”