Global Validation

About

This skill provides comprehensive guidance for implementing defensive validation patterns that safeguard applications from invalid data and security vulnerabilities. It focuses on symmetric validation across frontend and backend layers, utilizing allowlist strategies to reject unexpected inputs and providing structured, actionable error responses. By integrating domain-specific business rules and ensuring rigorous sanitization at every boundary, it helps developers build resilient systems that prevent resource exhaustion and maintain a clear audit trail of validation failures.

Key Features

• Symmetric multi-layer validation across clients, APIs, and databases
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• Input sanitization and output escaping to prevent common injection attacks
• Allowlist-based input filtering to prevent unauthorized data injection
• Structured error reporting with field-specific violations and remediation guidance
• Implementation of domain-specific business rules and edge-case coverage

Use Cases

• Enforcing complex business domain constraints and preconditions before processing data
• Synchronizing validation logic between frontend interfaces and backend services
• Securing API endpoints and form submissions against malformed or malicious inputs