Zod Boundaries Skill
When to use
- Any time you accept external input (URL params, search params, form payloads, server-function inputs).
Workflow checklist
- Define a schema close to the boundary (route module or a domain validator).
- Parse early (
parse/safeParse) and return typed data. - Keep schemas reusable (export from a domain module when shared).
- Prefer explicit error messages suitable for UX; avoid leaking internals.
- In server code, validate before DB writes.
Notes
- Use Zod as the single source of truth for both runtime validation and TS inference.