Introduction ... Using Zod, you can define schemas you can use to validate data, from a simple string to a complex nested object.

For complete documentation on Zod's schema API, refer to Defining schemas. Defining a schema ... Zod Zod Mini

Introduction to Zod - TypeScript-first schema validation library with static type inference

Complete API reference for all Zod schema types, methods, and validation features

Zod 4 release notes and new features including performance improvements and breaking changes

The zod/v4 package is the "flagship" library of the Zod ecosystem. ... If you have uncommonly strict constraints around bundle size, consider Zod Mini.

In other cases, you may have a set of Zod schemas you'd like to represent using multiple interlinked JSON Schemas, perhaps to write to .json files and serve from a web server.

Jul 8, 2025 · If I naively published [email protected] to npm, the vast majority of the libraries in Zod's ecosystem would need to publish a new major version to properly support Zod 4, include some …

Zod Mini implements the exact same functionality as zod, but using a functional, tree-shakable API. If you're coming from zod, this means you generally will use functions in place of methods.

In Zod 3, when the results were unmergable, Zod threw a ZodError with a special "invalid_intersection_types" issue. In Zod 4, this will throw a regular Error instead.