@prefix dcat: . @prefix dct: . @prefix foaf: . @prefix prov: . @prefix rdfs: . @prefix skos: . @prefix spdx: . @prefix vcard: . @prefix xsd: . a dct:Location . a foaf:Agent ; foaf:name "Ajuntament de Barcelona" . a skos:Concept ; skos:prefLabel "Environment"@en . a dct:MediaTypeOrExtent . a dct:MediaTypeOrExtent . a dct:MediaTypeOrExtent . a dct:MediaTypeOrExtent . a dct:MediaTypeOrExtent . a dct:Frequency . a dct:MediaType . a dct:MediaType . a dct:MediaType . a dct:MediaType . a dct:MediaType . a dct:Standard . a dct:Standard . a dcat:Dataset ; dct:description "Fondària de l'aigua i cota piezomètrica de cada mesura, CC BY 4.0." ; dct:title "Detall de les mesures dels piezòmetres i pous (Open Data BCN)" . a dcat:Dataset ; dct:description "Nom, ubicació, aqüífer i fondària de cada pou, CC BY 4.0." ; dct:title "Relació de piezòmetres i pous (Open Data BCN)" . a dcat:Distribution ; dct:description "The data model as RDF; sha256 e9e88480f6d831e81a8ff66a041671ee6e7918f2388be2ab14c7cbb62ce4bb7c." ; dct:format ; dct:issued "2026-10-26T07:58:36.775767"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-29T10:38:23.828114"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Font: Ajuntament de Barcelona, Open Data BCN, CC BY 4.0" ] ; dct:title "barcelona model.rdf.ttl" ; spdx:checksum [ a spdx:Checksum ; spdx:algorithm spdx:checksumAlgorithm_sha256 ; spdx:checksumValue "e9e88480f6d831e81a8ff66a041671ee6e7918f2388be2ab14c7cbb62ce4bb7c"^^xsd:hexBinary ] ; dcat:accessURL ; dcat:byteSize "2099"^^xsd:nonNegativeInteger ; dcat:mediaType . a dcat:Distribution ; dct:description """Live updates: open one WebSocket, subscribe to the entities you want, and each change arrives as a message, with no server of your own. With websocat, then type the subscription: websocat --protocol ngsi-ld-ws 'wss://api.smartcity.joinedcontext.com/api/endpoint/6cy6upunqzvimnf3zxiivp5jo4yarmyf/ws' {"metadata":{"x-op":"x-subscribe","x-id":"s1"},"body":{"type":"Subscription","entities":[{"type":"PhreaticObserved"}]}} Always live: the catalogue holds this link, never a copy. Open to anyone, with no sign-in. The message format, the limits and examples in JavaScript and Python: https://smartcity.joinedcontext.com/docs/API/07-websocket""" ; dct:issued "2026-10-26T07:58:36.775767"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-29T10:38:23.826801"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Font: Ajuntament de Barcelona, Open Data BCN, CC BY 4.0" ] ; dct:title "Live updates over WebSocket" ; dcat:accessURL ; dcat:mediaType . a dcat:Distribution ; dct:description """A CSV table, generated on each download from the endpoint's live data. curl -o file.csv 'https://api.smartcity.joinedcontext.com/api/endpoint/6cy6upunqzvimnf3zxiivp5jo4yarmyf/file.csv' Open to anyone, with no sign-in.""" ; dct:format ; dct:issued "2026-10-26T07:58:36.775767"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-29T10:38:23.826492"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Font: Ajuntament de Barcelona, Open Data BCN, CC BY 4.0" ] ; dct:title "CSV" ; dcat:accessURL ; dcat:mediaType . a dcat:Distribution ; dct:description "The data model as JSON-LD; sha256 50fc829a18e48831148dce702181a2c41ec2862db665c14439ed7fa8fa28b3c6." ; dct:format ; dct:issued "2026-10-26T07:58:36.775767"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-29T10:38:23.827508"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Font: Ajuntament de Barcelona, Open Data BCN, CC BY 4.0" ] ; dct:title "barcelona context.jsonld" ; spdx:checksum [ a spdx:Checksum ; spdx:algorithm spdx:checksumAlgorithm_sha256 ; spdx:checksumValue "50fc829a18e48831148dce702181a2c41ec2862db665c14439ed7fa8fa28b3c6"^^xsd:hexBinary ] ; dcat:accessURL ; dcat:byteSize "1545"^^xsd:nonNegativeInteger ; dcat:mediaType . a dcat:Distribution ; dct:description """For AI assistants: a Model Context Protocol server over this dataset's endpoint https://api.smartcity.joinedcontext.com/api/endpoint/6cy6upunqzvimnf3zxiivp5jo4yarmyf. It answers anyone, with no sign-in, what the endpoint serves the public. Tools: `query_entities` (the rows of an entity type, with an NGSI-LD `q` filter, `attrs`, `count` and paging), `get_entity` (one entity by its URN), `describe_schema` (the data model: read it first) and `describe_access` (what you may read). Licence: Creative Commons Attribution 4.0; the data is reused under it. An MCP client reaches it with this configuration: {"mcpServers":{"groundwater":{"type":"http","url":"https://api.smartcity.joinedcontext.com/api/endpoint/6cy6upunqzvimnf3zxiivp5jo4yarmyf/mcp"}}} """ ; dct:format ; dct:issued "2026-10-26T07:58:36.775767"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-29T10:38:23.826661"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Font: Ajuntament de Barcelona, Open Data BCN, CC BY 4.0" ] ; dct:title "Model Context Protocol" ; dcat:accessService [ a dcat:DataService ; dct:conformsTo ; dct:title "Model Context Protocol" ; dcat:endpointURL ; dcat:servesDataset ] ; dcat:accessURL ; dcat:mediaType . a dcat:Distribution ; dct:description "The data model as Markdown; sha256 b3eb3fd2f5c5b69dfc7c7b96ec1923d65741c73d6072c6b2ddd88e9feacb34c8." ; dct:format ; dct:issued "2026-10-26T07:58:36.775767"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-29T10:38:23.827788"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Font: Ajuntament de Barcelona, Open Data BCN, CC BY 4.0" ] ; dct:title "barcelona model.md" ; spdx:checksum [ a spdx:Checksum ; spdx:algorithm spdx:checksumAlgorithm_sha256 ; spdx:checksumValue "b3eb3fd2f5c5b69dfc7c7b96ec1923d65741c73d6072c6b2ddd88e9feacb34c8"^^xsd:hexBinary ] ; dcat:accessURL ; dcat:byteSize "2990"^^xsd:nonNegativeInteger ; dcat:mediaType . a dcat:Distribution ; dct:description "The data model as OWL; sha256 be3728fbaf23c8f67da78fdd5ca906986edda63a32f7018e37df9e9aec9f779e." ; dct:format ; dct:issued "2026-10-26T07:58:36.775767"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-29T10:38:23.827946"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Font: Ajuntament de Barcelona, Open Data BCN, CC BY 4.0" ] ; dct:title "barcelona model.owl.ttl" ; spdx:checksum [ a spdx:Checksum ; spdx:algorithm spdx:checksumAlgorithm_sha256 ; spdx:checksumValue "be3728fbaf23c8f67da78fdd5ca906986edda63a32f7018e37df9e9aec9f779e"^^xsd:hexBinary ] ; dcat:accessURL ; dcat:byteSize "4649"^^xsd:nonNegativeInteger ; dcat:mediaType . a dcat:Distribution ; dct:description "The Endpoint's own DCAT-AP 3.0 description, which this dataset is published from (EP-63)." ; dct:format ; dct:issued "2026-10-26T07:58:36.775767"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-29T10:38:23.827371"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Font: Ajuntament de Barcelona, Open Data BCN, CC BY 4.0" ] ; dct:title "DCAT-AP record" ; dcat:accessURL ; dcat:mediaType . a dcat:Distribution ; dct:description "The data model as JSON Schema; sha256 ef8d87d0e98e3ac5e07604b4d9afff003adc832e44bcaece0ffa11fc25877359." ; dct:format ; dct:issued "2026-10-26T07:58:36.775767"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-29T10:38:23.828333"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Font: Ajuntament de Barcelona, Open Data BCN, CC BY 4.0" ] ; dct:title "barcelona model.schema.json" ; spdx:checksum [ a spdx:Checksum ; spdx:algorithm spdx:checksumAlgorithm_sha256 ; spdx:checksumValue "ef8d87d0e98e3ac5e07604b4d9afff003adc832e44bcaece0ffa11fc25877359"^^xsd:hexBinary ] ; dcat:accessURL ; dcat:byteSize "4391"^^xsd:nonNegativeInteger ; dcat:mediaType . a dcat:Distribution ; dct:description """The NGSI-LD API (ETSI GS CIM 009) of this dataset: query, filter and page its entities. The first ten PhreaticObserved entities: curl -H 'Accept: application/ld+json' 'https://api.smartcity.joinedcontext.com/api/endpoint/6cy6upunqzvimnf3zxiivp5jo4yarmyf/ngsi-ld/v1/entities?type=PhreaticObserved&limit=10' Always live: the catalogue holds this link, never a copy. Open to anyone, with no sign-in. The fields it filters on and example queries that answered with this dataset's data: https://api.smartcity.joinedcontext.com/d/6cy6upunqzvimnf3zxiivp5jo4yarmyf""" ; dct:format ; dct:issued "2026-10-26T07:58:36.775767"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-29T10:38:23.826286"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Font: Ajuntament de Barcelona, Open Data BCN, CC BY 4.0" ] ; dct:title "NGSI-LD API" ; dcat:accessService [ a dcat:DataService ; dct:conformsTo ; dct:title "NGSI-LD API" ; dcat:endpointURL ; dcat:servesDataset ] ; dcat:accessURL ; dcat:mediaType . a dcat:Distribution ; dct:description "The data model as SHACL; sha256 71a585f63f941b425a2ca7695cf880ef77685f2c82444a2e43cb8870ab5f4f0b." ; dct:format ; dct:issued "2026-10-26T07:58:36.775767"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-29T10:38:23.828490"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Font: Ajuntament de Barcelona, Open Data BCN, CC BY 4.0" ] ; dct:title "barcelona model.shacl.ttl" ; spdx:checksum [ a spdx:Checksum ; spdx:algorithm spdx:checksumAlgorithm_sha256 ; spdx:checksumValue "71a585f63f941b425a2ca7695cf880ef77685f2c82444a2e43cb8870ab5f4f0b"^^xsd:hexBinary ] ; dcat:accessURL ; dcat:byteSize "7035"^^xsd:nonNegativeInteger ; dcat:mediaType . a dcat:Distribution ; dct:description "The data model in every formalism, for every model version, each artifact with its sha256 (EP-68)." ; dct:format ; dct:issued "2026-10-26T07:58:36.775767"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-29T10:38:23.827243"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Font: Ajuntament de Barcelona, Open Data BCN, CC BY 4.0" ] ; dct:title "Schema artifacts" ; dcat:accessURL ; dcat:mediaType . a dcat:Distribution ; dct:description "The data model as LinkML; sha256 ca2470fb7417b5c981fa41a72f30194f1d76c47edfca3da56d21481fccf8eb38." ; dct:format ; dct:issued "2026-10-26T07:58:36.775767"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-29T10:38:23.827657"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Font: Ajuntament de Barcelona, Open Data BCN, CC BY 4.0" ] ; dct:title "barcelona model.linkml.yaml" ; spdx:checksum [ a spdx:Checksum ; spdx:algorithm spdx:checksumAlgorithm_sha256 ; spdx:checksumValue "ca2470fb7417b5c981fa41a72f30194f1d76c47edfca3da56d21481fccf8eb38"^^xsd:hexBinary ] ; dcat:accessURL ; dcat:byteSize "10262"^^xsd:nonNegativeInteger ; dcat:mediaType . a dcat:Distribution ; dct:description """OGC API - Features, read-only: Part 1 (Core: collections and items), Part 2 (coordinate reference systems by reference) and Part 3 (Filtering with CQL2). https://api.smartcity.joinedcontext.com/api/endpoint/6cy6upunqzvimnf3zxiivp5jo4yarmyf/ogc/features/conformance lists the classes this endpoint serves. In QGIS: Layer, Add Layer, Add WFS / OGC API - Features Layer, a new connection with the URL https://api.smartcity.joinedcontext.com/api/endpoint/6cy6upunqzvimnf3zxiivp5jo4yarmyf/ogc/features/. With curl: curl 'https://api.smartcity.joinedcontext.com/api/endpoint/6cy6upunqzvimnf3zxiivp5jo4yarmyf/ogc/features/collections' Always live: the catalogue holds this link, never a copy. Open to anyone, with no sign-in. The fields it filters on and example queries that answered with this dataset's data: https://api.smartcity.joinedcontext.com/d/6cy6upunqzvimnf3zxiivp5jo4yarmyf""" ; dct:format ; dct:issued "2026-10-26T07:58:36.775767"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-29T10:38:23.826969"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Font: Ajuntament de Barcelona, Open Data BCN, CC BY 4.0" ] ; dct:title "OGC API - Features" ; dcat:accessService [ a dcat:DataService ; dct:conformsTo ; dct:title "OGC API - Features" ; dcat:endpointURL ; dcat:servesDataset ] ; dcat:accessURL ; dcat:mediaType . a dcat:Distribution ; dct:description """OData v4, read-only: each entity type is an entity set, with $filter, $select, $orderby and $top. In Excel: Data, Get Data, From Other Sources, From OData Feed, then the URL https://api.smartcity.joinedcontext.com/api/endpoint/6cy6upunqzvimnf3zxiivp5jo4yarmyf/odata/v4/. In Power BI: Get data, OData feed, the same URL. With curl: curl 'https://api.smartcity.joinedcontext.com/api/endpoint/6cy6upunqzvimnf3zxiivp5jo4yarmyf/odata/v4/' Its entity sets: https://api.smartcity.joinedcontext.com/api/endpoint/6cy6upunqzvimnf3zxiivp5jo4yarmyf/odata/v4/PhreaticObserved. Always live: the catalogue holds this link, never a copy. Open to anyone, with no sign-in. The fields it filters on and example queries that answered with this dataset's data: https://api.smartcity.joinedcontext.com/d/6cy6upunqzvimnf3zxiivp5jo4yarmyf""" ; dct:issued "2026-10-26T07:58:36.775767"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-29T10:38:23.827111"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Font: Ajuntament de Barcelona, Open Data BCN, CC BY 4.0" ] ; dct:title "OData v4" ; dcat:accessURL ; dcat:mediaType . a dct:Standard . a dct:Standard . a dct:MediaTypeOrExtent . a dct:MediaType . a foaf:Document . a rdfs:Resource . a rdfs:Resource . a rdfs:Resource . a dct:MediaTypeOrExtent . a dct:MediaTypeOrExtent . a dct:MediaType . a dcat:Dataset ; dct:accrualPeriodicity ; dct:conformsTo ; dct:description "Els piezòmetres i pous de Barcelona i la seva darrera mesura (fondària de l'aigua i cota piezomètrica), amb 400 dies d'història." ; dct:identifier "6cy6upunqzvimnf3zxiivp5jo4yarmyf" ; dct:issued "2026-10-26T07:58:36.775767"^^xsd:dateTime ; dct:modified "2026-10-29T10:38:23.812511"^^xsd:dateTime ; dct:publisher ; dct:source , ; dct:spatial ; dct:title "Aigües subterrànies de Barcelona" ; dcat:contactPoint [ a vcard:Kind, vcard:Organization ; vcard:fn "joinedcontext platform" ; vcard:hasEmail ] ; dcat:distribution , , , , , , , , , , , , , , ; dcat:keyword "acuífero", "aguas subterráneas", "aigües subterrànies", "aquifer", "aqüífer", "groundwater", "piezometer", "piezòmetre", "piezómetro" ; dcat:landingPage ; dcat:theme ; prov:wasGeneratedBy [ a prov:Activity ; rdfs:label "pipeline groundwater" ] . a dct:MediaType . spdx:checksumAlgorithm_sha256 a spdx:ChecksumAlgorithm . a dct:LicenseDocument .