Validate TypeScript data against Zod v4 schemas with metadata annotations.
npx skills add https://github.com/hashintel/hash --skill zod-hashintel
Please help me install this Agent Skill. Skill: zod Source: https://github.com/hashintel/hash/tree/main/.codex/skills/zod Command: npx skills add https://github.com/hashintel/hash --skill zod-hashintel
Zod provides TypeScript-first schema validation patterns and best practices for writing robust schemas, annotations, and data validation.
.meta() and .describe() to attach metadata to schemas for UI hints and tooling.z.infer, z.object, z.string, z.number, and z.array for strong typing and runtime validation.Create a simple user schema and validate a sample payload, e.g., z.object({ name: z.string() }).parse({ name: "Amy" }).
High-intent search queries and answers about installing and using this skill.
Schema validation in TypeScript uses Zod to define type-safe schemas and parse data at runtime. Create a schema with `z.object()`, `z.string()`, or other type constructors, then call `.parse()` to validate incoming data and throw errors on mismatch.
Attach metadata to Zod schemas using `.meta()` and `.describe()` methods at the end of schema chains. This enables UI hints, tooling integration, and labeled metadata storage via global registries for complex object annotations.
Use `z.infer<typeof schema>` to extract a TypeScript type directly from your Zod schema definition. This ensures your runtime validation schema and static types stay synchronized automatically.
Zod supports nested validation through `z.object()` for complex shapes and `z.array()` for collections. Combine these with `z.string()`, `z.number()`, and other primitives to build deeply nested, type-safe schemas.
Both define object schemas, but `z.strictObject()` rejects unknown properties during validation, while `z.object()` allows them by default. Choose strict mode when you need to enforce exact shape matching.
Extend schemas using the `.extend()` method to add or override properties on existing `z.object()` definitions. This enables schema composition and reduces duplication across TypeScript validation logic.
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