Global Validation

Runtime validation with Zod enforces type safety on form data and API inputs by parsing them against schemas, catching errors before they reach your application logic. Use Zod's safeParse method to validate user input, API requests, and URL parameters, returning success or detailed error information.

Define Zod schemas for each form field—email, password, and other inputs—specifying validation rules like format and length. Apply safeParse to form submission data server-side and client-side to reject invalid entries and display errors before processing or storing user data.

Yes. Zod validates environment variables and configuration data at application startup, ensuring required variables exist and match expected types. This prevents misconfigurations from causing runtime errors or security vulnerabilities later in your application.

Zod's transformations and custom refinements let you sanitize data during validation—removing unsafe characters, trimming whitespace, and enforcing data integrity rules. Combined with schema validation, this blocks XSS vectors and prevents corrupted or leaked data from entering your system.

Yes. Zod schemas validate Content Collections data and component props, ensuring type safety across your entire data pipeline. This catches mismatches between expected and actual prop types, preventing runtime errors and maintaining data consistency throughout your application.

Zod validates at runtime only, not compile-time; it adds a performance cost on every validation call. For frequently-validated high-volume data, consider caching schema validation results or pre-validating at entry points to minimize overhead.