2.2. Version

Every OpenShift REST API call returns the current API version, and other versions that are supported. The following example shows how to use the cURL command to return the API version. 
$ curl "https://openshift.redhat.com/broker/rest/api"
The following examples show the response for this command in both XML and JSON syntax.
XML Response

<response>
  <status>ok</status>
  <version>1.6</version>
  <supported-api-versions>
    <supported-api-version>1.0</supported-api-version>
    <supported-api-version>1.1</supported-api-version>
    <supported-api-version>1.2</supported-api-version>
    <supported-api-version>1.3</supported-api-version>
    <supported-api-version>1.4</supported-api-version>
    <supported-api-version>1.5</supported-api-version>
    <supported-api-version>1.6</supported-api-version>
  </supported-api-versions>
</response>

JSON Response

{
   "supported_api_versions": [
        1.0,
        1.1,
        1.2,
        1.3,
        1.4
        1.5
        1.6
    ],
    "version": "1.6"
}

If a specific API version is required, the client must include the HTTP header with the response request. The following examples show response requests in both XML and JSON syntax.
XML Clients

Accept: application/xml; version=1.5

JSON Clients

Accept: application/json; version=1.5

If the version requested by the client is not supported, the server responds with the HTTP status code 406, as shown in the following examples in XML and JSON syntax.
XML Response for Unsupported Version

<response>
  <messages>
    <message>
      <text>Requested API version 2.0 is not supported.  Supported versions are 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6</text>
      <severity>error</severity>
    </message>
  </messages>
  <version>1.6</version>
  <supported-api-versions>
    <supported-api-version>1.0</supported-api-version>
    <supported-api-version>1.1</supported-api-version>
    <supported-api-version>1.2</supported-api-version>
    <supported-api-version>1.3</supported-api-version>
    <supported-api-version>1.4</supported-api-version>
    <supported-api-version>1.5</supported-api-version>
    <supported-api-version>1.6</supported-api-version>
  </supported-api-versions>
  <status>not_acceptable</status>
</response>

JSON Response for Unsupported Version

{
    "data": null,
    "messages": [
        {
            "exit_code": null,
            "field": null,
            "severity": "error",
            "text": "Requested API version 2.0 is not supported. Supported versions are 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6"
        }
    ],
    "status": "not_acceptable",
    "supported_api_versions": [
        1.0,
        1.1,
        1.2,
        1.3,
        1.4,
        1.5,
        1.6
    ],
    "type": null,
    "version": "1.6"
}