This page discusses Stardog’s HTTP API.
Stardog supports the standard SPARQL Protocol HTTP bindings, as well as additional functionality via HTTP. Stardog also supports SPARQL 1.1’s Service Description format. See the spec if you want the details.
In addition to the support for the standard protocols such as SPARQL 1.1, the Stardog HTTP protocol adds additional resource representations and capabilities.
The HTTP API is documented for developers here.