# @comunica/actor-query-source-identify-hypermedia-sparql > A sparql query-source-identify-hypermedia actor Latest version **5.4.0** (published 2026-09-14) · MIT license · 0 weekly downloads ## Install ```sh npm install @comunica/actor-query-source-identify-hypermedia-sparql pnpm add @comunica/actor-query-source-identify-hypermedia-sparql yarn add @comunica/actor-query-source-identify-hypermedia-sparql bun add @comunica/actor-query-source-identify-hypermedia-sparql ``` ## Health **Score 60/100 (C)** — status: active. Positive: has types; no vulnerabilities; recently updated; high maintenance score. Warnings: low downloads; no esm support. ## Facts | | | |---|---| | Version | 5.4.0 | | Published | 2026-09-14 | | First published | 2024-02-09 | | Weekly downloads | 0 | | License | MIT | | TypeScript types | bundled | | Module format | CommonJS | | Dependencies | 16 | | Unpacked size | 152.6 KB | | Known vulnerabilities | 0 | | Install scripts | no | | GitHub stars | 583 | | Maintainers | joachimvh, rubensworks, rubenverborgh, dexagod, jeswr | | Keywords | comunica, actor, query-source-identify-hypermedia, sparql | ## Links - npm: https://www.npmjs.com/package/@comunica/actor-query-source-identify-hypermedia-sparql - Repository: https://github.com/comunica/comunica - Homepage: https://comunica.dev/ - Issues: https://github.com/comunica/comunica/issues - Funding: https://opencollective.com/comunica-association - npm.io page: https://npm.io/package/@comunica/actor-query-source-identify-hypermedia-sparql ## Dependencies (16) - [lru-cache](https://npm.io/package/lru-cache.md) ^11.2.2 - [rdf-terms](https://npm.io/package/rdf-terms.md) ^2.0.0 - [@rdfjs/types](https://npm.io/package/@rdfjs/types.md) * - [asynciterator](https://npm.io/package/asynciterator.md) ^3.10.0 - [@comunica/core](https://npm.io/package/@comunica/core.md) ^5.4.0 - [@comunica/types](https://npm.io/package/@comunica/types.md) ^5.4.0 - [@comunica/bus-http](https://npm.io/package/@comunica/bus-http.md) ^5.4.0 - [fetch-sparql-endpoint](https://npm.io/package/fetch-sparql-endpoint.md) ^7.2.0 - [@comunica/utils-algebra](https://npm.io/package/@comunica/utils-algebra.md) ^5.4.0 - [@comunica/utils-metadata](https://npm.io/package/@comunica/utils-metadata.md) ^5.4.0 - [@comunica/context-entries](https://npm.io/package/@comunica/context-entries.md) ^5.4.0 - [@comunica/bus-query-serialize](https://npm.io/package/@comunica/bus-query-serialize.md) ^5.4.0 - [@comunica/utils-query-operation](https://npm.io/package/@comunica/utils-query-operation.md) ^5.4.0 - [@comunica/utils-bindings-factory](https://npm.io/package/@comunica/utils-bindings-factory.md) ^5.4.0 - [@comunica/bus-merge-bindings-context](https://npm.io/package/@comunica/bus-merge-bindings-context.md) ^5.4.0 - [@comunica/bus-query-source-identify-hypermedia](https://npm.io/package/@comunica/bus-query-source-identify-hypermedia.md) ^5.4.0 ## Alternatives - [gamedig](https://npm.io/package/gamedig.md) — 29.3K weekly downloads - [join-monster](https://npm.io/package/join-monster.md) — 12.8K weekly downloads - [masked](https://npm.io/package/masked.md) — 5.5K weekly downloads - [@comunica/actor-query-process-explain-logical](https://npm.io/package/@comunica/actor-query-process-explain-logical.md) — 4.7K weekly downloads - [@veracity/vui](https://npm.io/package/@veracity/vui.md) — 4.6K weekly downloads ## Recent versions - 5.4.0 (latest) — 2026-09-14 - 4.4.2-alpha.49.0 (next) — 2025-10-22 - 5.3.0 — 2026-07-10 - 5.2.3 — 2026-05-26 - 5.2.2 — 2026-05-03 - 5.2.0 — 2026-04-14 - 5.1.3 — 2026-01-30 - 5.1.2 — 2026-01-21 - 5.1.0 — 2026-01-16 - 5.0.3 — 2026-01-12 - 5.0.2 — 2026-01-12 - 5.0.0 — 2026-01-08 - 4.5.0 — 2025-11-18 - 4.4.1 — 2025-09-25 - 4.4.0 — 2025-09-17 - … 16 more at https://npm.io/package/@comunica/actor-query-source-identify-hypermedia-sparql/versions ## README # Comunica SPARQL Query Source Identify Hypermedia Actor [![npm version](https://badge.fury.io/js/%40comunica%2Factor-query-source-identify-hypermedia-sparql.svg)](https://www.npmjs.com/package/@comunica/actor-query-source-identify-hypermedia-sparql) A [Query Source Identify Hypermedia](https://github.com/comunica/comunica/tree/master/packages/bus-query-source-identify-hypermedia) actor that handles [SPARQL endpoints](https://www.w3.org/TR/sparql11-protocol/). This module is part of the [Comunica framework](https://github.com/comunica/comunica), and should only be used by [developers that want to build their own query engine](https://comunica.dev/docs/modify/). [Click here if you just want to query with Comunica](https://comunica.dev/docs/query/). ## Install ```bash $ yarn add @comunica/actor-query-source-identify-hypermedia-sparql ``` ## Configure After installing, this package can be added to your engine's configuration as follows: ```text { "@context": [ ... "https://linkedsoftwaredependencies.org/bundles/npm/@comunica/actor-query-source-identify-hypermedia-sparql/^1.0.0/components/context.jsonld" ], "actors": [ ... { "@id": "urn:comunica:default:query-source-identify-hypermedia/actors#sparql", "@type": "ActorQuerySourceIdentifyHypermediaSparql", "mediatorHttp": { "@id": "urn:comunica:default:http/mediators#main" }, "mediatorMergeBindingsContext": { "@id": "urn:comunica:default:merge-bindings-context/mediators#main" }, "mediatorQuerySerialize": { "@id": "urn:comunica:default:query-serialize/mediators#main" }, "sparqlServerSoftwarePatterns": ["Virtuoso", "Fuseki"] } ] } ``` ### Config Parameters * `mediatorHttp`: A mediator over the [HTTP bus](https://github.com/comunica/comunica/tree/master/packages/bus-http). * `mediatorMergeBindingsContext`: A mediator over the [Merge Bindings Context bus](https://github.com/comunica/comunica/tree/master/packages/bus-merge-bindings-context). * `mediatorQuerySerialize`: A mediator over the [Query Serialize bus](https://github.com/comunica/comunica/tree/master/packages/bus-query-serialize). * `checkUrlSuffix`: If URLs ending with '/sparql' should also be considered SPARQL endpoints, defaults to `true`. * `forceHttpGet`: If queries should be sent via HTTP GET instead of POST, defaults to `false`. * `forceSourceType`: Forces all sources provided to be interpreted as SPARQL endpoints, defaults to `false`. * `cacheSize`: The cache size for COUNT queries, defaults to `1024`. * `bindMethod`: The query operation for communicating bindings, defaults to `'values'`, alt: `'union'` or `'filter'`. * `countTimeout`: Timeout in ms of how long count queries are allowed to take. If the timeout is reached, an infinity cardinality is returned. Defaults to `3000`. * `cardinalityCountQueries`: If count queries should be sent to obtain the cardinality of (sub)queries. If set to false, resulting cardinalities will always be considered infinity. Defaults to `true` * `cardinalityEstimateConstruction`: If cardinality estimates for larger queries should be constructed locally from (sub)query cardinalities when possible. Defaults to `false`. If set to false, count queries will be sent for every operation at all levels. * `sparqlServerSoftwarePatterns`: An optional list of regular expressions to match against the `Server` HTTP response header. If a match is found, the source is identified as a SPARQL endpoint. ## Endpoint Server Header Report The following endpoints have been observed to return the following `Server` headers (at the time of writing): | Endpoint | Server Header | | ----------------------------------------------------------------- | ---------------------------------------------------------------------- | | http://lod.sztaki.hu/sparql | `Virtuoso/06.01.3127 (Linux) i686-pc-linux-gnu` | | http://linguistic.linkeddata.es/sparql | `Virtuoso/06.01.3127 (Linux) x86_64-pc-linux-gnu` | | http://www.genome.jp/sparql/linkdb | `Virtuoso/07.20.3217 (Linux) x86_64-unknown-linux-gnu` | | http://sparql.archives-ouvertes.fr/sparql | `Virtuoso/07.20.3229 (Linux) x86_64-pc-linux-gnu` | | http://data.persee.fr/sparql | `Virtuoso/07.20.3230 (Linux) x86_64-generic_glibc25-linux-gnu` | | http://linkedgeodata.org/sparql | `Virtuoso/07.20.3233 (Linux) x86_64-pc-linux-gnu` | | http://kaiko.getalp.org/sparql | `Virtuoso/07.20.3240 (Linux) x86_64-pc-linux-gnu` | | http://data.cervantesvirtual.com/openrdf-sesame/repositories/data | `Virtuoso/07.20.3240 (Linux) x86_64-pc-linux-gnu` | | http://sparql.hegroup.org/sparql/ | `Virtuoso/07.20.3241 (Linux) x86_64-pc-linux-gnu` | | http://dbpedia.org/sparql | `Virtuoso/08.03.3334 (Linux) x86_64-ubuntu_noble-linux-glibc2.39 VDB` | | https://lov.linkeddata.es/dataset/lov/sparql | `Fuseki (1.1.1)` | | http://lov.okfn.org/endpoint/lov | `Fuseki (1.1.1)` | --- _Source: https://npm.io/package/@comunica/actor-query-source-identify-hypermedia-sparql · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._