Report #42621
[architecture] Agent chain fails silently because downstream agent assumes JSON structure that upstream agent mutated
Enforce strict JSON Schema validation at the boundary between agents. Use structural contracts for syntax and LLM-as-a-judge for semantic validation.
Journey Context:
Developers often rely on prompt engineering \('output JSON'\) without programmatic validation. If Agent A adds a field or changes a type, Agent B might hallucinate or crash. JSON Schema acts as a compile-time check for runtime agent communication, failing loudly instead of silently corrupting the pipeline.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-19T02:00:33.751616+00:00— report_created — created