validation-schema-generator

Generate input validation schemas (Joi, Zod, Yup).

Activation Keywords

• "validation", "schema", "joi", "zod", "yup", "validate input"

When to Use

• Creating request body validation
• Form validation schemas
• Input sanitization and validation

What This Does

Generates validation schemas for popular libraries:

• Joi (Node.js)
• Zod (TypeScript)
• Yup (React forms)
• Pydantic (Python)

Includes:

• Required/optional fields
• Type validation (string, number, email, etc.)
• Length constraints (min, max)
• Pattern validation (regex)
• Custom validators
• Error messages (user-friendly)
• Transformation rules (trim, lowercase, etc.)

Output

Validation schema code ready for integration

Example Activation

User: "Create Zod validation for login request" Skill: Generates:

import { z } from 'zod';

export const loginRequestSchema = z.object({
  email: z
    .string('Email is required')
    .email('Invalid email format')
    .toLowerCase()
    .trim(),
  password: z
    .string('Password is required')
    .min(8, 'Password must be at least 8 characters')
    .regex(/[A-Z]/, 'Password must contain uppercase')
    .regex(/[0-9]/, 'Password must contain number'),
});

export type LoginRequest = z.infer<typeof loginRequestSchema>;

// Usage
const validateLogin = (data: unknown) => {
  return loginRequestSchema.parse(data);
};

Also generates Joi, Yup, Pydantic versions.