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Pydantic · Type Alias

WrapValidator

Functional validators add custom checks or transformations to Pydantic fields and models. They can be written with Annotated or validator decorators.

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Syntax

field_validator(field, /, *fields, mode='after', check_fields=None, json_schema_input_type=...)

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  • AfterValidator
  • BeforeValidator
  • PlainValidator
  • WrapValidator
  • field_validator
  • model_validator
  • ValidationInfo
  • InstanceOf

Source: Validators | Pydantic Docs. Checked 2026-11-03.