schema-definition-camel-case

Requires names under components.schemas to use lower camelCase.

Attribute	Value
Category	Metadata
Maturity	Gold
OpenAPI	OpenAPI 3.0, 3.1, 3.2
Starter	Off
Lenient–Complete	Error

Intent

One schema naming style keeps references and generated model names predictable.

Flags

Every component schema name that does not start with a lowercase ASCII letter followed only by ASCII letters or digits.

Does not flag

Names such as payment, paymentMethod, and address2. Swagger 2.0 definitions are outside this implementation.

See it fail

components:
  schemas:
    Payment_Method:
      type: object

Diagnostic: Schema names should use camelCase.

Fix it

components:
  schemas:
    paymentMethod:
      type: object

Update every $ref to the renamed schema. Renaming a published component can affect generated client types.

Configure

profiles:
  default:
    rules:
      extends: [recommended]
      override:
        schema-definition-camel-case: warn

Nearby: component-name-unique, spec-components-invalid-map-name.