parameter-length-required

Requires string parameters to define both maxLength and a non-blank pattern.

Attribute	Value
Category	Parameters
Maturity	Gold
Starter	Off
Lenient–Strict	Warning
Complete	Error

Flags

String parameters in query, path, header, or cookie locations. Direct string properties inside component schemas are also checked.

See it fail

- in: query
  name: countryCode
  schema: { type: string }

Fix it

- in: query
  name: countryCode
  schema: { type: string, maxLength: 2, pattern: '^[A-Z]{2}$' }

Nearby: parameter-description, string-schema-length.