✅ Pydantic Cheat Sheet Summary

Feature	Usage Example
Type Coercion	"30" → 30
Email Validation	EmailStr
URL Validation	AnyUrl
Field Constraints	Field(gt=0, max_length=50)
Optional Fields	Optional[str] = None
Annotated Fields	Annotated[str, Field(...)]
Nested Models	Models inside Models
Custom Validators	@field_validator('field')
Serialization (dict)	model.model_dump()
Serialization (JSON)	model.model_dump_json()
Validation Modes	mode='before' or mode='after'
Examples in Docs	Field(..., examples=['abc', 'xyz'])
Title & Description	Field(..., title="Title", description="...")
Strict Types	Field(strict=True)