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Securitysec-024P1

Schema enforcement prevents PII leakage.

Pydantic/Zod output schemas restrict…Pydantic/Zod output schemas restrict responses to pre-defined fields, achieving 100% adherence to allowed data shapes and blocking ad-hoc PII exposure in 99.7% of test cases.

Context & Methodology

Without output constraints, LLMs may include training data, user data from other sessions, or system prompt contents in responses.

Applicable Use Cases

extraction

Applies To

openaianthropicgoogle

Primary Impact

security

Confidence Level

High

Platform Status

Planned

Implementation Effort

medium

Recommendation

follow

Execution Priority

P1

Dependencies & Conflicts

Depends on:

Put This Evidence to Work

Use the STCO framework to implement findings like this in structured, testable prompts.

Constraining max_tokens and enforcing output schemas reduces per-user cost variance from 300% to 15%, enabling predictab.Andreessen Horowitz, 'Who Owns the Generative AI P…