Rule-based and structured checks
Rule checks validate deterministic requirements such as required fields, forbidden phrases, format guarantees, and policy guardrails.
Structured-output checks catch contract violations early, but they do not prove factual correctness on their own.
Evidence, retrieval, and human review methods
Evidence-based checks compare claims to trusted documents and verify source alignment, recency, and completeness.
Human review remains essential for ambiguous edge cases, especially when the business impact of an error is high.
Audit-layer decisioning and trust signals
An audit layer evaluates the final response and emits a trust-oriented decision path: allow, review, or block.
This creates a consistent operational bridge between verification findings and release behavior.