REST API

Obtain a description of the SPARQL endpoint

curl -iH "Accept: text/turtle" http://cu.kegg.bio2rdf.org/sparql/

returns

 HTTP/1.1 200 OK
 Date: Sat, 22 Aug 2015 11:31:08 GMTh
 Server: Virtuoso/07.10.3207 (Linux) x86_64-unknown-linux-gnu
 Accept-Ranges: bytes
 Content-Type: text/turtle; charset=UTF-8
 Content-Length: 572

 @prefix rdf:    <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
 @prefix ns1:    <http://localhost:8890/> .
 @prefix sd:     <http://www.w3.org/ns/sparql-service-description#> .
 @prefix ns3:    <http://www.w3.org/ns/formats/> .
 ns1:sparql      rdf:type        sd:Service ;
  sd:endpoint     ns1:sparql ;
  sd:feature      sd:DereferencesURIs , sd:UnionDefaultGraph .
 ns1:sparql      sd:resultFormat ns3:SPARQL_Results_CSV ,
  ns3:SPARQL_Results_JSON ,
  ns3:N3 ,
  ns3:RDF_XML ,
  ns3:SPARQL_Results_XML ,
  ns3:Turtle ,
  ns3:N-Triples ,
  ns3:RDFa ;
  sd:supportedLanguage    sd:SPARQL10Query ;
  sd:url  ns1:sparql .

To perform a CURL using a sparql query in a file: curl -H "Accept: text/plain" --data-urlencode query@query.sparql http://bio2rdf.org/sparql

for SELECT or ASK queries (the right part is the content type): ('HTML','text/html'); ('HTML (Faceted Browsing Links)','text/x-html+tr'); ('Spreadsheet','application/vnd.ms-excel'); ('XML','application/sparql-results+xml'); ('JSON','application/sparql-results+json'); ('Javascript','application/javascript'); ('Turtle','text/turtle'); ('RDF/XML','application/rdf+xml'); ('N-Triples','text/plain'); ('CSV','text/csv'); ('TSV','text/tab-separated-values');

for construct queries:

('Turtle','text/turtle'); ('Pretty-printed Turtle (slow!)','application/x-nice-turtle'); ('RDF/JSON','application/rdf+json'); ('RDF/XML','application/rdf+xml'); ('N-Triples','text/plain'); ('XHTML+RDFa','application/xhtml+xml'); ('ATOM+XML','application/atom+xml'); ('ODATA/JSON','application/odata+json'); ('JSON-LD','application/x-json+ld'); ('HTML (list)','text/x-html+ul'); ('HTML (table)','text/x-html+tr'); ('HTML+Microdata (inconvenient)','text/html'); ('HTML+Microdata (pretty-printed table)','application/x-nice-microdata'); ('Turtle-style HTML (for browsing, not for export)','text/x-html-nice-turtle'); ('Microdata/JSON','application/microdata+json'); ('CSV','text/csv'); ('TSV','text/tab-separated-values'); ('TriG','application/x-trig');