Zod
Definition
Zod validates data at runtime based on defined schemas.
The TypeScript-oriented library describes allowed data structures and validates incoming values. Additionally, TypeScript types can be derived from this.
Simply explained
Like an input control that checks whether a data packet contains the correct fields and value types.
Why it matters in practice
External data and AI outputs can be validated before further processing.
Example from business
Hypothetical example: A form accepts only requests with a valid email structure and required fields.
Limits and pitfalls
- A correct schema does not prove that the information is true or that an action is permitted.
Origin & history
Zod originated in the TypeScript ecosystem to connect runtime validation and static types.
Use in mid-sized companies
- Validate API inputs, configurations, and structured AI outputs.
Frequently asked questions
Does TypeScript replace runtime validation?
No, external data can be invalid despite static types.
Sources
- Introduction · Zod: Introduction –
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