SPARQL queries

A server implementing the SPARQL Access profile exposes a read-only SPARQL 1.1 endpoint at /api/ric/v1/sparql (public, rate-limited; SPARQL Update is rejected).

A query

curl -s "https://ric.theahg.co.za/api/ric/v1/sparql" \
  --data-urlencode 'query=SELECT * WHERE { ?s ?p ?o } LIMIT 5' \
  -H "Accept: application/sparql-results+json"

Both GET (?query=) and POST are accepted, per the SPARQL 1.1 Protocol. The response is canonical SPARQL Results JSON:

{ "head": { "vars": ["s","p","o"] },
  "results": { "bindings": [ { "s": {...}, "p": {...}, "o": {...} } ] } }

A more useful query

PREFIX rico: <https://www.ica.org/standards/RiC/ontology#>
SELECT ?record ?title WHERE {
  ?record a rico:Record ; rico:title ?title .
} LIMIT 20

Dataset description

curl -s "https://ric.theahg.co.za/api/ric/v1/sparql/info"

Returns a void:Dataset description - triple count, endpoint, vocabularies.

Notes

• The endpoint is read-only: INSERT/DELETE/CLEAR/LOAD/DROP are rejected with 403 application/problem+json.
• Rate-limited (60/min/IP on the reference server) with a backend timeout.
• For grounding LLM/RAG agents against the graph, see the draft Graph-Grounding profile (GET /ground).

Next

• Export & harvesting
• Reading data