data.europa.eu SPARQL — DCAT-AP graph search

Read-only SPARQL against the EU data portal's triple store. Filter by publisher, theme, spatial, temporal and graph-traverse distributions.

data.europa.eu exposes the entire DCAT-AP metadata catalogue via SPARQL 1.1 (Virtuoso). More precise than the Hub Search API for: dataset → distribution → accessURL traversal, publisher- and theme-driven dataset-discovery flows, and combined temporal+spatial filters. The connector has read-only guardrails (deny INSERT/DELETE/DROP/CLEAR/CREATE/LOAD), an enforced LIMIT (default 100, max 1,000), client-adjustable timeout (1–15s) and a 1-hour in-memory cache per (query, format, limit). Issue #3255.