Migrate Zod schemas from v3 to v4 with updated APIs.
npx skills add https://github.com/valec3/AGENTS.md --skill zod-4-valec3
Please help me install this Agent Skill. Skill: zod-4 Source: https://github.com/valec3/AGENTS.md/tree/main/REFERENCES/GentlemanProgramming/skill/zod-4 Command: npx skills add https://github.com/valec3/AGENTS.md --skill zod-4-valec3
Zod v3 to v4 migrations can introduce breaking changes and inconsistent validation patterns. This Skill guides you through updating schemas to the new API surface, ensuring consistent validation behavior across the codebase.
Run through the example migration steps and apply them to a representative v3 schema to produce a v4-compatible counterpart and test with sample data.
High-intent search queries and answers about installing and using this skill.
To migrate Zod schemas from v3 to v4, you update existing validation patterns to the new API surface, converting object schemas, arrays, and unions to ensure consistent runtime typing and parsing behavior across your codebase.
A Zod v4 migration requires addressing breaking changes by adopting top-level validators, explicit error handling, and updated transformations to maintain consistent validation behavior for form inputs and runtime type checks.
Updating z.string().email() validation to Zod 4 involves converting the schema to use the new top-level validators and explicit error handling, then verifying the updated pattern using parse or safeParse with sample data.
Yes, Zod 4 supports object schemas, refinements, and transformations. The migration process guides you through updating these specific schema patterns to align with the new API surface for consistent validation.
Yes, you can test migrated Zod 4 schemas with safeParse. After updating a representative v3 schema to its v4-compatible counterpart, you apply safeParse with sample data to verify consistent validation behavior.
Limitations of migrating Zod schemas to v4 include potential inconsistent validation patterns if breaking changes are not fully addressed, requiring careful updates to unions, refinements, and explicit error handling.
klhMigrate Zod 3 schemas to Zod 4 and produce a migration report.
neverinfamousValidates data with Zod schemas using parse, safeParse, and refinements.
codexyzdevValidate data contracts with Zod v4 schemas for forms and API payloads.
brewpirateGenerates Zod 4 schemas with TypeScript inferred types from requirements or examples.
