This specification extension is supported only in OpenAPI 2.0.
x-servers in your OpenAPI 2.0 documents to define one or more target hosts for the API. Add it to the root OpenAPI object.
This specification extension provides compatibility via backporting from the OpenAPI 3.0
servers object. It doesn't support templates.
swagger: '2.0' info: ... tags: [...] x-servers: - url: https://development.gigantic-server.com/v1 description: Development server - url: https://staging.gigantic-server.com/v1 description: Staging server