Why it matters
Prohibited claims must never appear regardless of retrieval. Guarantees, unauthorized discounts, medical advice, and competitor attacks belong here. Models invent them unless blocked.
How it works
Maintain prohibited phrase and pattern lists. Scan outputs pre-delivery. Fail tests containing prohibited language. Alert on near misses.
Example
Nintendo prohibits we always refund unused months even if retrieval suggests generous tone. Enforcement strips or blocks such sentences.
Common mistakes
- 1Prohibited lists too small and stale
- 2Blocking without customer-friendly fallback text
- 3Relying on users to report prohibited output first
Test the answer before your customer does.
Run answer tests and evaluations against your governed knowledge before you ship.
See answer evaluations