uuid

Validates that a field contains a valid UUID (versions 3, 4, and 5).

Options

Option	Type	Default	Description
version	3 | 4 | 5	all versions	Restrict to a specific UUID version
message	string	locale default	Custom error message

Playground

Valid values

Value	Notes
"550e8400-e29b-41d4-a716-446655440000"	Valid UUID v4
"f47ac10b-58cc-4372-a567-0e02b2c3d479"	Valid UUID v4

Invalid values

Value	Reason
"not-a-uuid"	Wrong format
"550e8400-e29b-61d4-a716-446655440000"	Version digit 6 is not valid (only versions 3, 4, and 5 are supported)

Notes

• Empty string ("") always returns valid: true. Combine with notEmpty to require a value.
• Without version option, UUID versions 3, 4, and 5 are accepted.