# OpenAPI Extensions For some functionality that is not directly provided by the OpenAPI v2 specification, some extensions have been added that are to be consistent across the specification. The defined extensions are listed below. Extensions should not break parsers, however if extra functionality is required, aware parsers should be able to take advantage of the added syntax. ## Extensible Query Parameters If a unknown amount of query parameters can be added to a request, the `name` must be `fields...`, with the trailing ellipses representing the possibility of more fields. Example: ``` - in: query name: fields... type: string ```