The API of ABBYY Cloud OCR SDK uses HTTP POST and HTTP GET methods for sending data to an HTTP server. The parameters of requests are specified in the URL string. The URL depends on the processing location of your application. See Data processing location for details.

Here you can find the description of API methods:

Cloud OCR SDK server requires authentication before allowing access to its resources on the Internet. To authenticate on the server, you need a registered Application ID and Application Password. See details in the Authentication section.