diff --git a/modules/tripleliftBidAdapter.js b/modules/tripleliftBidAdapter.js
index e9e6e5d2a63..df4f9a9ba38 100644
--- a/modules/tripleliftBidAdapter.js
+++ b/modules/tripleliftBidAdapter.js
@@ -2,6 +2,7 @@ import { tryAppendQueryString, logMessage, logError, isEmpty, isStr, isPlainObje
 import { BANNER, VIDEO } from '../src/mediaTypes.js';
 import { registerBidder } from '../src/adapters/bidderFactory.js';
 import { config } from '../src/config.js';
+import { getStorageManager } from '../src/storageManager.js';
 
 const GVLID = 28;
 const BIDDER_CODE = 'triplelift';
@@ -10,6 +11,7 @@ const BANNER_TIME_TO_LIVE = 300;
 const INSTREAM_TIME_TO_LIVE = 3600;
 let gdprApplies = true;
 let consentString = null;
+export const storage = getStorageManager({gvlid: GVLID, bidderCode: BIDDER_CODE});
 
 export const tripleliftAdapterSpec = {
   gvlid: GVLID,
@@ -197,10 +199,23 @@ function _getGlobalFpd(bidderRequest) {
   const context = {}
   const user = {};
   const ortbData = bidderRequest.ortb2 || {};
+  const opeCloudStorage = _fetchOpeCloud();
 
   const fpdContext = Object.assign({}, ortbData.site);
   const fpdUser = Object.assign({}, ortbData.user);
 
+  if (opeCloudStorage) {
+    fpdUser.data = fpdUser.data || []
+    try {
+      fpdUser.data.push({
+        name: 'www.1plusx.com',
+        ext: opeCloudStorage
+      })
+    } catch (err) {
+      logError('Triplelift: error adding 1plusX segments: ', err);
+    }
+  }
+
   _addEntries(context, fpdContext);
   _addEntries(user, fpdUser);
 
@@ -213,6 +228,18 @@ function _getGlobalFpd(bidderRequest) {
   return fpd;
 }
 
+function _fetchOpeCloud() {
+  const opeCloud = storage.getDataFromLocalStorage('opecloud_ctx');
+  if (!opeCloud) return null;
+  try {
+    const parsedJson = JSON.parse(opeCloud);
+    return parsedJson
+  } catch (err) {
+    logError('Triplelift: error parsing JSON: ', err);
+    return null
+  }
+}
+
 function _getAdUnitFpd(adUnitFpd) {
   const fpd = {};
   const context = {};
diff --git a/test/spec/modules/tripleliftBidAdapter_spec.js b/test/spec/modules/tripleliftBidAdapter_spec.js
index 733265b0bae..b0269aaf077 100644
--- a/test/spec/modules/tripleliftBidAdapter_spec.js
+++ b/test/spec/modules/tripleliftBidAdapter_spec.js
@@ -1,5 +1,5 @@
 import { expect } from 'chai';
-import { tripleliftAdapterSpec } from 'modules/tripleliftBidAdapter.js';
+import { tripleliftAdapterSpec, storage } from 'modules/tripleliftBidAdapter.js';
 import { newBidder } from 'src/adapters/bidderFactory.js';
 import { deepClone } from 'src/utils.js';
 import { config } from 'src/config.js';
@@ -379,10 +379,17 @@ describe('triplelift adapter', function () {
       };
       sandbox = sinon.sandbox.create();
       logErrorSpy = sinon.spy(utils, 'logError');
+
+      $$PREBID_GLOBAL$$.bidderSettings = {
+        triplelift: {
+          storageAllowed: true
+        }
+      };
     });
     afterEach(() => {
       sandbox.restore();
       utils.logError.restore();
+      $$PREBID_GLOBAL$$.bidderSettings = {};
     });
 
     it('exists and is an object', function () {
@@ -827,6 +834,68 @@ describe('triplelift adapter', function () {
       expect(request.data.imp[0].fpd.context.data).to.haveOwnProperty('adUnitSpecificAttribute');
       expect(request.data.imp[1].fpd).to.not.exist;
     });
+    it('should send 1PlusX data as fpd if localStorage is available and no other fpd is defined', function() {
+      sandbox.stub(storage, 'getDataFromLocalStorage').callsFake(() => '{"kid":1,"s":"ySRdArquXuBolr/cVv0UNqrJhTO4QZsbNH/t+2kR3gXjbA==","t":"/yVtBrquXuBolr/cVv0UNtx1mssdLYeKFhWFI3Dq1dJnug=="}');
+      const request = tripleliftAdapterSpec.buildRequests(bidRequests, bidderRequest);
+      expect(request.data.ext.fpd).to.deep.equal({
+        'user': {
+          'data': [
+            {
+              'name': 'www.1plusx.com',
+              'ext': {
+                'kid': 1,
+                's': 'ySRdArquXuBolr/cVv0UNqrJhTO4QZsbNH/t+2kR3gXjbA==',
+                't': '/yVtBrquXuBolr/cVv0UNtx1mssdLYeKFhWFI3Dq1dJnug=='
+              }
+            }
+          ]
+        }
+      })
+    });
+    it('should append 1PlusX data to existing user.data entries if localStorage is available', function() {
+      bidderRequest.ortb2 = {
+        user: {
+          data: [
+            { name: 'dataprovider.com', ext: { segtax: 4 }, segment: [{ id: '1' }] }
+          ]
+        }
+      }
+      sandbox.stub(storage, 'getDataFromLocalStorage').callsFake(() => '{"kid":1,"s":"ySRdArquXuBolr/cVv0UNqrJhTO4QZsbNH/t+2kR3gXjbA==","t":"/yVtBrquXuBolr/cVv0UNtx1mssdLYeKFhWFI3Dq1dJnug=="}');
+      const request = tripleliftAdapterSpec.buildRequests(bidRequests, bidderRequest);
+      expect(request.data.ext.fpd).to.deep.equal({
+        'user': {
+          'data': [
+            { 'name': 'dataprovider.com', 'ext': { 'segtax': 4 }, 'segment': [{ 'id': '1' }] },
+            {
+              'name': 'www.1plusx.com',
+              'ext': {
+                'kid': 1,
+                's': 'ySRdArquXuBolr/cVv0UNqrJhTO4QZsbNH/t+2kR3gXjbA==',
+                't': '/yVtBrquXuBolr/cVv0UNtx1mssdLYeKFhWFI3Dq1dJnug=='
+              }
+            }
+          ]
+        }
+      })
+    });
+    it('should not append anything if getDataFromLocalStorage returns null', function() {
+      bidderRequest.ortb2 = {
+        user: {
+          data: [
+            { name: 'dataprovider.com', ext: { segtax: 4 }, segment: [{ id: '1' }] }
+          ]
+        }
+      }
+      sandbox.stub(storage, 'getDataFromLocalStorage').callsFake(() => null);
+      const request = tripleliftAdapterSpec.buildRequests(bidRequests, bidderRequest);
+      expect(request.data.ext.fpd).to.deep.equal({
+        'user': {
+          'data': [
+            { 'name': 'dataprovider.com', 'ext': { 'segtax': 4 }, 'segment': [{ 'id': '1' }] },
+          ]
+        }
+      })
+    });
   });
 
   describe('interpretResponse', function () {