diff --git a/services/sitempas/extractUrlsFromSearch.ts b/services/sitempas/extractUrlsFromSearch.ts
new file mode 100644
index 00000000..48186923
--- /dev/null
+++ b/services/sitempas/extractUrlsFromSearch.ts
@@ -0,0 +1,260 @@
+'use strict';
+
+import {properties} from "../../explore/src/environments/environment";
+import {SearchResearchResultsService} from "../../explore/src/app/openaireLibrary/services/searchResearchResults.service";
+import {ResultPreview} from "../../explore/src/app/openaireLibrary/utils/result-preview/result-preview";
+
+import {Identifier} from "../../explore/src/app/openaireLibrary/utils/string-utils.class";
+import {SearchFields} from "../../explore/src/app/openaireLibrary/utils/properties/searchFields";
+import {ContextsService} from "../../explore/src/app/openaireLibrary/claims/claim-utils/service/contexts.service";
+
+let express = require('express');
+let app = express();
+const request = require('superagent');
+const URL = require('url');
+let cors = require('cors');
+app.use(cors());
+
+function get(resultsPerUrl) {
+  setTimeout(() => {
+    let searchFields = new SearchFields();
+    let fieldIdsMap = searchFields.RESULT_FIELDS;
+
+    request.get(refineUrl, async function (err: any, refineResponse: any) {
+      if (!refineResponse && err) {
+        console.error("Error getting refine filters ",err);
+      } else {
+        let keys = refineResponse.body['refineResults'] ? Object.keys(refineResponse.body['refineResults']) : null;
+        console.log("number of keys: " + keys.length);
+
+        let allUrls = new Set();
+
+        var promiseArray = [];
+
+        for (let key of keys) {
+          if(key == "community") {
+            await communitiesPromise;
+          }
+          console.log("key: "+key+", number of values: " + refineResponse.body['refineResults'][key].length);
+
+          for (let value of refineResponse.body['refineResults'][key]) {
+            if(!value || !value.name || !value.id
+              || value.name.toLowerCase().includes('unknown') || value.name.toLowerCase().includes('not available')
+              || value.name == "unidentified" || value.name == "Undetermined") {
+              console.log("filtered out: "+(value ? ("name: "+value.name + " - id: "+value.id) : value));
+              continue;
+            }
+
+            if(key=="community") {
+              let valueId = "";
+              if(value.id) {
+                let idArray = value.id.split("||");
+                if(idArray) {
+                  valueId = idArray[0];
+                }
+              }
+              if(!valueId || !publicCommunities.includes(valueId)) {
+                console.log("hidden community: "+valueId);
+                continue;
+              }
+            }
+
+            const url = resultsUrlPrefix + "&fq=" + key + " " + fieldIdsMap[key].equalityOperator + " \"" + encodeURIComponent(value.id) + "\"" + "&type=results&page=0&size=" + resultsPerUrl;
+
+            promiseArray.push(new Promise((resolve, reject) => {
+              request.get(url, function (err: any, response: any) {
+                if (!response && err) {
+                  console.error("Error getting results ", err);
+                  fs.appendFileSync("./"+errorFileName, "no response  "+url);
+                  fs.appendFileSync("./"+errorFileName, err);
+                  fs.appendFileSync("./"+errorFileName, "\n");
+                  reject();
+                } else {
+                  parseAllUrls(response, allUrls);
+                  resolve();
+                }
+              })
+            }));
+          }
+          console.log("");
+        }
+
+        await Promise.all(promiseArray);
+        console.log("\nDuplicate urls: "+alreadyin + " vs unique urls: "+notin);
+
+        fs.appendFile("./" + fileName, "\n</urlset>", function (err) {
+          if (err) {
+            return console.log("Error appending in file "+fileName+": ", err);
+          }
+          console.timeEnd("total_time");
+        });
+      }
+    })
+  })
+}
+// });
+
+function parseAllUrls(response: any, allUrls: any) {
+  // let allUrls: any = [];
+
+  let responses: any = response.body['results'];
+  let searchResearchResultsService: any = new SearchResearchResultsService();
+
+  // if(responses) {
+  //   let length = Array.isArray(responses) ? responses.length : 1;
+  //   for (let i = 0; i < length; i++) {
+  //     let resData = Array.isArray(responses) ? responses[i]['result']['metadata']['oaf:entity']['oaf:result'] : responses['result']['metadata']['oaf:entity']['oaf:result'];
+  //
+  //     if (resData['pid']) {
+  //       if (!Array.isArray(resData['pid'])) {
+  //         if (resData['pid'].classid && resData['pid'].classid == 'doi') {
+  //           if (resData['pid'].content != '' && resData['pid'].content != null) {
+  //             console.log("|"+resData['pid'].content+"|   "+(typeof resData['pid'].content));
+  //             resData['pid'].content.replace("https://doi.org/", "");
+  //           }
+  //         }
+  //       }
+  //     }
+  //   }
+  // }
+
+
+  let searchResults: any = searchResearchResultsService.parseResults("result", responses, properties);
+  if(searchResults.length < 100 && searchResults.length > 0) {
+    console.log("num of results: "+searchResults.length + "   " + response.request.url);
+  }
+
+  if(searchResults.length == 0) {
+    fs.appendFileSync("./"+errorFileName, response.statusCode+"  "+response.request.url+"/n");
+  }
+  for(let j=0; j<searchResults.length; j++) {
+    let resultPreview: any = ResultPreview.searchResultConvert(searchResults[j], searchResults[j].entityType);
+
+    let pid: any = Identifier.getResultPIDFromIdentifiers(resultPreview.identifiers);
+    let url;
+    if(pid && pid.id) {
+      url = getUrlByType(resultPreview.resultType, pid, pid.id);
+    } else {
+      url = getUrlByType(resultPreview.resultType, null, resultPreview.id);
+    }
+    if(allUrls.has(url)) {
+      alreadyin++;
+    } else {
+      allUrls.add(url);
+      let urlPre = "<url>\n" +
+        "    <loc>";
+      let urlSuf = "</loc>\n" +
+        "    </url>";
+      fs.appendFileSync("./"+fileName, urlPre + url + urlSuf);
+      notin++;
+    }
+  }
+  return allUrls;
+}
+
+
+// function parseAllUrls1(response) {
+//   let allUrls = [];
+//
+//   let responses = response.body['results'];
+//   let length = Array.isArray(responses) ? responses.length : 1;
+//
+//   for (let i = 0; i < length; i++) {
+//     let p = new parsingFunctions.ParsingFunctions();
+//     let resData = Array.isArray(responses) ? responses[i]['result']['metadata']['oaf:entity']['oaf:result'] : responses['result']['metadata']['oaf:entity']['oaf:result'];
+//
+//     let type = "result";
+//     if (resData['resulttype']) {
+//       type = resData['resulttype']['classname'];
+//     }
+//
+//     if (resData['pid']) {
+//       let identifiers = p.parseIdentifiers(resData['pid']);
+//       let pid = string_utils.Identifier.getResultPIDFromIdentifiers(identifiers);
+//
+//       if(pid && pid.id) {
+//         allUrls[i] = getUrlByType(type, pid, pid.id);
+//       } else {
+//         let canId = parsingFunctions.ParsingFunctions.parseRelCanonicalId(Array.isArray(responses) ? responses[i] : responses, "result");
+//         allUrls[i] = getUrlByType(type, null, canId);
+//       }
+//     } else {
+//       let canId = parsingFunctions.ParsingFunctions.parseRelCanonicalId(Array.isArray(responses) ? responses[i] : responses, "result");
+//       allUrls[i] = getUrlByType(type, null, canId);
+//     }
+//   }
+//   return allUrls;
+// }
+//
+function getUrlByType(type: any, pid: any, id: any) {
+  let parameter: any = "";
+
+  if (type === "publication") {
+    parameter = "articleId";
+  } else if (type === "dataset") {
+    parameter = "datasetId";
+  } else if (type === "software") {
+    parameter = "softwareId";
+  } else if (type === "other") {
+    parameter = "orpId";
+  } else {
+    parameter = "id";
+  }
+  if(pid) {
+    parameter = "pid";
+  }
+  return landingPrefix+type+"?"+parameter+"="+id;
+}
+
+function getCommunities() {
+  communitiesPromise = new Promise((resolve, reject) => {
+    resolve();
+    request.get(contextUrl, async function (err: any, communitiesResponse: any) {
+      if (!communitiesResponse && err) {
+        console.error("Error getting communities ", err);
+      } else {
+        const contextsService = new ContextsService();
+        publicCommunities = contextsService.parseCommunities(communitiesResponse.body, false).map(value => value.id);
+      }
+    })
+  });
+}
+
+function buildSiteMap(resultsPerUrl) {
+  console.time("total_time");
+
+  let date = new Date();
+  fileName = "sitemap_"+date.getFullYear()+"_"+date.getMonth()+"_"+date.getDate()+".xml";//+"_"+date.getTime();
+  errorFileName = "error_"+date.getFullYear()+"_"+date.getMonth()+"_"+date.getDate();//+"_"+date.getTime();
+  console.log("Buiding sitemap in file: "+fileName+"\n");
+
+  let sitemap = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" +
+    "<urlset xmlns=\"http://www.sitemaps.org/schemas/sitemap/0.9\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd\">";
+
+  fs.writeFile("./"+fileName, sitemap,  function(err) {
+    if(err) {
+      return console.log("Error writing in file "+fileName+": ", err);
+    }
+  });
+
+  getCommunities();
+  get(resultsPerUrl);
+}
+
+
+var fileName;
+var errorFileName;
+const fs = require('fs');
+
+var alreadyin = 0;  // duplicate urls
+var notin= 0;
+
+var communitiesPromise;
+var publicCommunities = [];
+
+const refineUrl = "https://beta.services.openaire.eu/search/v2/api/resources2/?format=json&refine=true&fields=resultbestaccessright&fields=relfunder&fields=instancetypename&fields=resultlanguagename&fields=community&fields=resulthostingdatasource&fields=country&type=results&page=0&size=0";
+const resultsUrlPrefix = "https://beta.services.openaire.eu/search/v2/api/resources2/?format=json";
+const landingPrefix = "https://beta.explore.openaire.eu/search/";
+const contextUrl = "https://beta.services.openaire.eu/openaire/contexts/";
+
+buildSiteMap(100);
diff --git a/services/sitempas/package.json b/services/sitempas/package.json
new file mode 100644
index 00000000..705892e0
--- /dev/null
+++ b/services/sitempas/package.json
@@ -0,0 +1,23 @@
+{
+  "name": "urls_for_sitemap",
+  "version": "1.0.0",
+  "description": "Caching in memory",
+  "main": "cache.js",
+  "scripts": {
+    "start": "PORT=3100 node extractUrlsFromSearch.js"
+  },
+  "dependencies": {
+    "cors": "^2.8.5",
+    "express": "^4.17.1",
+    "superagent": "^5.0.5"
+  },
+  "devDependencies": {
+    "typescript": "3.2.4",
+    "@types/node": "^8.0.30"
+  },
+  "engines": {
+    "node": "8.1.x"
+  },
+  "author": "Konstantina Galouni <kgalouni@di.uoa.gr>",
+  "license": "NKUA"
+}
diff --git a/services/sitempas/run.sh b/services/sitempas/run.sh
new file mode 100755
index 00000000..44b301b1
--- /dev/null
+++ b/services/sitempas/run.sh
@@ -0,0 +1 @@
+npx ts-node extractUrlsFromSearch.ts
diff --git a/services/sitempas/tsconfig.json b/services/sitempas/tsconfig.json
new file mode 100644
index 00000000..ff2d82a7
--- /dev/null
+++ b/services/sitempas/tsconfig.json
@@ -0,0 +1,10 @@
+{
+  "compilerOptions": {
+    "typeRoots": [
+      "node_modules/@types"
+    ],
+    "noImplicitAny": false,
+    "emitDecoratorMetadata": true,
+    "experimentalDecorators": true
+  }
+}