About
This skill provides a robust framework for Claude to implement the 'Defense-in-Depth' validation pattern within your codebase. Instead of relying on a single check that can be bypassed by refactoring or mocks, it guides the implementation of validation at four critical levels: Entry Point, Business Logic, Environment Guards, and Debug Instrumentation. This comprehensive approach makes bugs structurally impossible by catching invalid data regardless of the code path, ensuring your software remains resilient and secure under any condition.