Google Knowledge Graph Search API

The Knowledge Graph has millions of entries that describe real-world entities like people, places, and things. These entities form the nodes of ... Google SearchCentral KnowledgeGraphSearchAPI Language English BahasaIndonesia Deutsch Español Français Português–Brasil Русский 中文–简体 日本語 한국어 Signin Guides Reference Google SearchCentral KnowledgeGraphSearchAPI Guides Reference GetStarted IntroductionPrerequisites HowTo... InstallClientLibrariesAuthorizeRequestsUsetheKnowledgeGraphSearchWidget TermsofService Home SearchCentral KnowledgeGraphSearchAPI GoogleKnowledgeGraphSearchAPI TheKnowledgeGraphSearchAPIletsyoufindentitiesintheGoogleKnowledgeGraph. TheAPIusesstandardschema.orgtypesandiscompliantwiththe JSON-LDspecification. Typicalusecases SomeexamplesofhowyoucanusetheKnowledgeGraphSearchAPIinclude: Gettingarankedlistofthemostnotableentitiesthatmatchcertaincriteria. Predictivelycompletingentitiesinasearchbox. Annotating/organizingcontentusingtheKnowledgeGraphentities. Note:TheKnowledgeGraphSearchAPIisaread-onlyAPI.Warning:ThisAPIisnotsuitableforuseasaproduction-criticalservice.Your productshouldnotformacriticaldependenceonthisAPI. FordetailedinformationabouttheAPImethodsandparameters,seethe APIReference. Samplerequest ThefollowingexampleshowsonekindofrequestyoucansendtotheAPI. (ButcheckthePrerequisitessectionfirst. You'llalsoneedtoinsertyourownAPIkey.) https://kgsearch.googleapis.com/v1/entities:search?query=taylor+swift&key=API_KEY&limit=1&indent=True ThesamplesearchabovereturnsaJSON-LDresultsimilartothefollowing: { "@context":{ "@vocab":"http://schema.org/", "goog":"http://schema.googleapis.com/", "resultScore":"goog:resultScore", "detailedDescription":"goog:detailedDescription", "EntitySearchResult":"goog:EntitySearchResult", "kg":"http://g.co/kg" }, "@type":"ItemList", "itemListElement":[ { "@type":"EntitySearchResult", "result":{ "@id":"kg:/m/0dl567", "name":"TaylorSwift", "@type":[ "Thing", "Person" ], "description":"Singer-songwriter", "image":{ "contentUrl":"https://t1.gstatic.com/images?q=tbn:ANd9GcQmVDAhjhWnN2OWys2ZMO3PGAhupp5tN2LwF_BJmiHgi19hf8Ku", "url":"https://en.wikipedia.org/wiki/Taylor_Swift", "license":"http://creativecommons.org/licenses/by-sa/2.0" }, "detailedDescription":{ "articleBody":"TaylorAlisonSwiftisanAmericansinger-songwriterandactress.RaisedinWyomissing,Pennsylvania,shemovedtoNashville,Tennessee,attheageof14topursueacareerincountrymusic.", "url":"http://en.wikipedia.org/wiki/Taylor_Swift", "license":"https://en.wikipedia.org/wiki/Wikipedia:Text_of_Creative_Commons_Attribution-ShareAlike_3.0_Unported_License" }, "url":"http://taylorswift.com/" }, "resultScore":4850 } ] } Note:TheKnowledgeGraphSearchAPIreturnsonlyindividualmatchingentities, ratherthangraphsofinterconnectedentities.Ifyouneedthelatter,we recommendusingdatadumpsfromWikidatainstead. Thefollowingcodesamplesshowhowtoperformasimilarsearchinvarioussupported languages.ThissearchreturnsentriesmatchingTaylorSwift. Python """ExampleofPythonclientcallingKnowledgeGraphSearchAPI.""" importjson importurllib api_key=open('.api_key').read() query='TaylorSwift' service_url='https://kgsearch.googleapis.com/v1/entities:search' params={ 'query':query, 'limit':10, 'indent':True, 'key':api_key, } url=service_url+'?'+urllib.urlencode(params) response=json.loads(urllib.urlopen(url).read()) forelementinresponse['itemListElement']: print(element['result']['name']+'('+str(element['resultScore'])+')') Java packagecom.google.knowledge.platforms.syndication.entitymatch.codesample; importcom.google.api.client.http.GenericUrl; importcom.google.api.client.http.HttpRequest; importcom.google.api.client.http.HttpRequestFactory; importcom.google.api.client.http.HttpResponse; importcom.google.api.client.http.HttpTransport; importcom.google.api.client.http.javanet.NetHttpTransport; importcom.jayway.jsonpath.JsonPath; importjava.io.FileInputStream; importjava.util.Properties; importorg.json.simple.JSONArray; importorg.json.simple.JSONObject; importorg.json.simple.parser.JSONParser; /**ExampleofJavaclientcallingKnowledgeGraphSearchAPI*/ publicclassSearchExample{ publicstaticPropertiesproperties=newProperties(); publicstaticvoidmain(String[]args){ try{ properties.load(newFileInputStream("kgsearch.properties")); HttpTransporthttpTransport=newNetHttpTransport(); HttpRequestFactoryrequestFactory=httpTransport.createRequestFactory(); JSONParserparser=newJSONParser(); GenericUrlurl=newGenericUrl("https://kgsearch.googleapis.com/v1/entities:search"); url.put("query","TaylorSwift"); url.put("limit","10"); url.put("indent","true"); url.put("key",properties.get("API_KEY")); HttpRequestrequest=requestFactory.buildGetRequest(url); HttpResponsehttpResponse=request.execute(); JSONObjectresponse=(JSONObject)parser.parse(httpResponse.parseAsString()); JSONArrayelements=(JSONArray)response.get("itemListElement"); for(Objectelement:elements){ System.out.println(JsonPath.read(element,"$.result.name").toString()); } }catch(Exceptionex){ ex.printStackTrace(); } } } Javascript