Generate Zod Validation Schemas Directly from TypeScript Interfaces

If you're using TypeScript with Zod for runtime validation, keeping your types and schemas in sync is a constant chore. Paste your interfaces and ask Claude to generate the matching Zod schemas — it handles nested objects, union types, and optional fields correctly every time.

// Give Claude this interface:
interface UserProfile {
  id: number;
  email: string;
  role: 'admin' | 'editor' | 'viewer';
  preferences?: {
    theme: 'light' | 'dark';
    notifications: boolean;
  };
}

Claude generates a schema that goes beyond naive type mapping — it infers sensible validators too:

import { z } from 'zod';

export const UserProfileSchema = z.object({
  id: z.number().int().positive(),
  email: z.string().email(),
  role: z.enum(['admin', 'editor', 'viewer']),
  preferences: z.object({
    theme: z.enum(['light', 'dark']),
    notifications: z.boolean(),
  }).optional(),
});

export type UserProfile = z.infer<typeof UserProfileSchema>;

Ask Claude to add .email() for email fields, .url() for URLs, and sensible .min()/.max() constraints — not just bare .string() mappings. You can also ask it to generate the safe parse wrapper and typed error handler for each schema.

One paste, one schema — no more manually keeping types and validators out of step.