Global Validation

Enforce consistent input validation and sanitization across frontend and backend systems.

Updated Jan 15, 2026

Search Tags:#security #frontend #validation #backend #data-integrity #error-messages #input-sanitization

Ready to run

npx skills add https://github.com/dpietersz/pietersz.me --skill global-validation-dpietersz

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: Global Validation
Source: https://github.com/dpietersz/pietersz.me/tree/main/.claude/skills/global-validation
Command: npx skills add https://github.com/dpietersz/pietersz.me --skill global-validation-dpietersz

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Inconsistent and insecure input handling across frontend and backend code leads to data quality issues and vulnerability exposure. This skill provides a unified approach to validation, sanitization, and consistent error reporting.

Core Features & Use Cases

Cross-layer validation: Enforces the same rules on client-side forms, API payloads, and data processing backends.
Sanitization and protection: Centralized input cleansing to prevent injections (SQL, XSS, command).
Error messaging and governance: Standardized, user-friendly error messages and reusable validation templates for teams.
Use Case: When building a web application that collects user data across multiple entry points, apply global validation to ensure consistent formats and security.

Quick Start

Define and apply a single source of truth for validation rules across all frontend and backend entry points.

Frequently Asked Questions about Global Validation

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I enforce consistent input validation across frontend and backend systems?▼

To enforce consistent input validation across frontend and backend systems, you define a single source of truth for validation rules and apply these standardized templates to both client-side forms and API payloads. This ensures data integrity and uniform error messaging across all entry points.

What is the best way to prevent injection attacks through API request sanitization?▼

Preventing injection attacks through API request sanitization requires centralized input cleansing that filters out malicious payloads before they reach business logic. This approach protects against SQL, XSS, and command injections by applying consistent sanitization guardrails across all data processing backends.

How do I standardize user-friendly error messages for web application forms?▼

Standardizing user-friendly error messages for web application forms involves applying reusable validation templates that generate consistent responses across client-side forms and API requests. This centralizes error messaging governance and ensures uniform feedback for data integrity failures.

Can I use cross-layer validation rules across different programming languages and runtimes?▼

Yes, you can apply cross-layer validation rules across different programming languages and runtimes. This approach provides reusable templates and guardrails that enforce the same security and data format rules on both frontend and backend systems regardless of the specific runtime environment.

Why does inconsistent input handling cause data quality issues in web applications?▼

Inconsistent input handling causes data quality issues because varying validation rules across frontend and backend code allow malformed or un-sanitized data to enter processing backends. Applying a unified validation approach resolves this by enforcing consistent formats and security checks across all entry points.