validation

Complete guide to validation in Instructor using Pydantic.

Skills
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Install (Claude Code)

mkdir -p .claude/skills/validation && curl -fsSL https://doutorai.pt/data/lib/skills__validation.md -o .claude/skills/validation/SKILL.md

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Content

# Advanced Validation Patterns

Complete guide to validation in Instructor using Pydantic.

## Table of Contents
- Built-in Validators
- Custom Field Validators
- Model-Level Validation
- Complex Validation Patterns
- Error Handling

## Built-in Validators

### Numeric Constraints

```python
from pydantic import BaseModel, Field

class Product(BaseModel):
    price: float = Field(gt=0, description="Price must be positive")
    discount: float = Field(ge=0, le=100, description="Discount 0-100%")
    quantity: int = Field(ge=1, description="At least 1 item")
    rating: float = Field(ge=0.0, le=

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