{"apis":[{"description":"Query the LOTUS dataset using SPARQL","documentation":"https://query.wikidata.org/","name":"Wikidata SPARQL Endpoint","protocol":"SPARQL","type":"read-only","url":"https://query.wikidata.org/"},{"description":"Fast SPARQL queries over Wikidata with LOTUS data","documentation":"https://qlever.cs.uni-freiburg.de/","name":"QLever SPARQL Endpoint","protocol":"SPARQL","type":"read-only","url":"https://qlever.cs.uni-freiburg.de/wikidata"},{"accepts":["text/plain","application/json","application/vnd.citationstyles.csl+json"],"description":"Retrieve publication metadata by DOI","documentation":"https://www.doi.org/","name":"DOI Metadata Service","protocol":"HTTP","type":"read-only","url":"https://doi.org/"},{"description":"Main linked open data repository","documentation":"https://www.wikidata.org/wiki/Wikidata:Data_access","name":"Wikidata","protocol":"REST","type":"read-write","url":"https://www.wikidata.org/"}],"contact":"https://github.com/lotusnprod/lotus-explore-rs/issues","description":"LOTUS Explore-rs integrates with multiple external data sources. This catalog lists the primary APIs used.","last_updated":"2026-06-22"}