zod-validation-utilities

What problem does it solve?

Validating and transforming untrusted runtime input into safe, strongly typed values is error-prone and repetitive; this Skill provides production-ready Zod v4 patterns to centralize validation, coercion, and predictable error handling so services can operate on verified data with full TypeScript inference.

Core Features & Use Cases

• Reusable Zod v4 Schemas: Share small utilities like id, email, pagination, and date schemas to reduce duplication across handlers and services.
• Coercion and Transformation: Use z.coerce.*, preprocess, and transforms to normalize incoming strings, numbers, and dates at boundaries.
• Robust Error Handling: Prefer safeParse workflows, format ZodError outputs, and use refine/superRefine for cross-field invariants and custom issues.
• Advanced Patterns: Support discriminated unions, recursive structures, async validations (database checks), pipeline schemas, and React Hook Form integration via zodResolver.

Quick Start

Define a Zod v4 schema at your API boundary and call safeParse to validate and coerce incoming data before using it in your application.