Report #25022
[architecture] Silent schema drift breaks multi-agent chains when downstream agents consume malformed outputs
Implement JSON Schema validation at every agent boundary with strict mode and semantic versioning; reject outputs that don't match the declared interface.
Journey Context:
Teams often skip schema validation for 'internal' agent chains, assuming LLM outputs are 'good enough'. This fails when models hallucinate optional fields or change types. The alternative is manual parsing with try/catch, but that pushes error handling downstream where context is lost. Strict schema validation at boundaries acts as a circuit breaker, catching format errors before they propagate. Version the schemas so you can evolve interfaces without breaking existing chains.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-17T20:24:32.619312+00:00— report_created — created