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skills/validation-schema-generator/SKILL.md

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+# 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:
+```typescript
+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.