Namespace Registry

To allow for creators of OpenAPI descriptions to define new extensions without the risk of name collisions, a namespace registry is maintained by OAI. The namespace registry is a simple list of unique identifiers that are used as part of a prefix for extensions to ensure uniqueness. A prefix has the format x-{namespace}- where {namespace} is a unique string associated to the creator of the extensions within the namespace. Namespace identifiers MUST be registered as lowercase identifiers.

Contributing

Please raise a Pull-Request and follow the instructions in CONTRIBUTING.md, or open an Issue to contribute or discuss a registry value.

Values

Value	Prefix	Description	Issue
fdx	x-fdx-	Extensions created and used by Financial Data Exchange (FDX)
ms	x-ms-	Extensions created and used by Microsoft
oai	x-oai-	Reserved for uses defined by the OAI
oas-draft	x-oas-draft-	Extensions created by OAI to indicate proposed changes to the OAS specification
oas	x-oas-	Reserved for uses defined by the OAI
sap	x-sap-	Extensions created and used by SAP
scalar	x-scalar-	Extensions created and used by Scalar