You can find Swagger files for available caDSR II REST APIs in the caDSR II API Portal. 

We have designed the primary caDSR II APIs for ease of migration for existing customers. The URL syntax has changed, but everything else is the same. For comparison, the following examples retrieve the latest version of the CDE with public ID 62: 

• Legacy Format: cadsrapi.nci.nih.gov/cadsrapi4/GetXML?query=DataElement[@publicId=62][@latestVersionIndicator=Yes]
• New format: https://cadsrapi.cancer.gov/invoke/caDSR/GetXML?query=DataElement[@publicId=62,@latestVersionIndicator=yes]

Keep in mind the following points:

• Both the publicId and latestVersionIndicator attribute criteria on DataElement are in brackets separated by a comma ",".
• Class and attribute names are the same as in the legacy format.
• XML, HTML, and JSON formats are available. To switch object format, change the "Get" parameter: GetXML, GetHTML, or GetJSON.

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