Alfresco ReST API
Use the Alfresco ReST API version 1.0 when developing remote clients. The quickest way to get started is to use the ReST API Explorer, based on the OpenAPI initiative. It gives you full documentation for each endpoint, and a Try it out! button so you can use each method.
CMIS ReST API
Use the CMIS ReST API for use cases that require portability between different ECM systems.