Validation Attributes

Strings

Attribute	Description
#[NotBlank]	Value must not be empty
#[MinLength(n)]	Minimum string length
#[MaxLength(n)]	Maximum string length
#[Email]	Valid email address
#[Url]	Valid URL
#[Pattern('/regex/')]	Matches regular expression
#[Alpha]	Alphabetic characters only
#[AlphaNumeric]	Alphanumeric characters only
#[Numeric]	Numeric string
#[HexColor]	Valid hex color (#fff or #ffffff)
#[Uuid]	Valid UUID v4
#[Phone]	Valid phone number
#[Ip]	Valid IP address (v4 or v6)
#[Json]	Valid JSON string

Numbers

Attribute	Description
#[Min(n)]	Minimum numeric value
#[Max(n)]	Maximum numeric value
#[Between(min, max)]	Value within range (inclusive)
#[Positive]	Value must be positive
#[Negative]	Value must be negative

General

Attribute	Description
#[NotNull]	Value must not be null
#[In([...])]	Value must be in the given list
#[InEnum(MyEnum::class)]	Value must be a valid enum case
#[Size(n)]	Array must have exactly n elements
#[ArrayOf(type)]	All array elements must be of the given type
#[Date]	Valid date string (Y-m-d)
#[DateTime]	Valid datetime string (Y-m-d H:i:s)

DTO Markers

Attribute	Description
#[Dto]	Marks a class as hydratable
#[Strict]	Enables strict type checking during hydration

Validation Error Response

When validation fails, the framework returns a 422 response with a field-level error map:

{
    "type": "https://antares.dev/errors",
    "title": "Validation failed",
    "status": 422,
    "errors": {
        "email": ["Must be a valid email address"],
        "name": ["Must be at least 2 characters"]
    }
}