Why it matters

Output validation prevents leaks + errors. Standard practice.

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The architecture

Schema check.

PII scan.

Content safety.

Business rules.

Output validation stackSchemaJSON SchemaPII scanPresidioBusiness rulesdomain checkLayered validation catches different failure modes; combine multiple
Output validation.
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How it works end to end

Schema: JSON Schema, Java records.

PII: Presidio, custom.

Content: Llama Guard, moderation.

Business: domain-specific.