Agree

Agree is a TypeScript library by Boris Cherny that provides a schema validation and serialization system, enabling developers to define data schemas with type safety and validate data at runtime. The library supports complex data structures and offers a functional, composable API for building and validating TypeScript types. It's commonly used in applications requiring robust data validation and serialization across API boundaries and configuration management.

Source: Boris Cherny (X) | 2026-06-30