n8n-validation-expert

Fix n8n validation errors by classifying the error type and using get_node to inspect requirements. Apply recovery patterns to resolve missing_required, type_mismatch, invalid_value, invalid_expression, and invalid_reference issues systematically.

n8n validation profiles enforce different strictness levels. Runtime checks operational readiness, strict enforces comprehensive compliance, ai-friendly optimizes for automated correction, and minimal performs basic structural validation.

Auto-sanitization cleans n8n operator structures by correcting malformed syntax and resolving stale references. It prevents broken connections by standardizing the workflow structure before validation processes run.

You can accept n8n validation warnings as false positives by applying a decision framework. The skill provides guidance on documenting accepted warnings to maintain workflow integrity while bypassing non-critical alerts.

The standard validation loop for debugging n8n workflows follows the sequence: configure, validate, fix, and re-validate. This iterative process ensures node requirements are met and errors resolve within two to three cycles.