Alfresco fully implements both the CMIS 1.0 and 1.1 standards to allow your application to manage content and metadata in an Alfresco repository or in Alfresco cloud. Here is a brief overview of the URL format for CMIS REST API calls, and explains the format of responses.
CMIS (Content Management Interoperability Services) is a vendor-neutral OASIS Web services interface specification that enables interoperability between Enterprise Content Management (ECM) systems. CMIS allows rich information to be shared across Internet protocols in vendor-neutral formats, among document systems, publishers and repositories, in a single enterprise and between companies.
You can use basic HTTP methods to invoke CMIS methods, or you can use one of the many language-specific libraries that wrap CMIS. One such example for the Java language is the OpenCMIS Client API provided by the Apache Chemistry project. Apache Chemistry provides client libraries for many other languages such as Python, PHP, and .NET.