no-fallbacks-source-fix

Fail-closed behavior stops invalid outputs from progressing by routing them to a FAILED status. It prevents permissive fallbacks from masking schema invalidity and ensures explicit validation errors are recorded in logs and metadata.

To remove permissive fallbacks, identify and eliminate default value substitutions that bypass validation gates. Fix the root cause in the source code directly so that future evaluations fail safely and prevent invalid artifacts from progressing.

Semantic checks are needed when schema-only checks are insufficient to validate required artifacts. They enforce deeper validation before status transitions, ensuring outputs are genuinely valid rather than just structurally compliant.

Yes, applying fail-closed validation during planner handovers and evaluation gates ensures required artifacts are validated. Invalid outputs are routed to FAILED and explicit validation errors are recorded in logs and metadata.

Your validation workflow passes invalid outputs because permissive fallbacks are masking failures. Remove these fallbacks, implement explicit validation and error diagnostics, and fix the root cause to enforce strict fail-closed behavior.

The best way to fix validation failures is removing permissive fallbacks and applying explicit error diagnostics at the source. Record validation errors in logs, apply versioned updates, and route invalid outputs to FAILED to enforce fail-closed behavior.