diff --git a/modules/smartytechBidAdapter.js b/modules/smartytechBidAdapter.js
index 6f3de10be3c..c461a5707ab 100644
--- a/modules/smartytechBidAdapter.js
+++ b/modules/smartytechBidAdapter.js
@@ -1,6 +1,8 @@
-import {buildUrl, deepAccess} from '../src/utils.js'
+import {buildUrl, deepAccess, isArray} from '../src/utils.js'
 import { BANNER, VIDEO } from '../src/mediaTypes.js';
 import {registerBidder} from '../src/adapters/bidderFactory.js';
+import {config} from '../src/config.js';
+import {chunk} from '../libraries/chunk/chunk.js';
 
 const BIDDER_CODE = 'smartytech';
 export const ENDPOINT_PROTOCOL = 'https';
@@ -80,20 +82,60 @@ export const spec = {
         }
       }
 
+      // Add user IDs if available
+      const userIds = deepAccess(validBidRequest, 'userIdAsEids');
+      if (userIds && isArray(userIds) && userIds.length > 0) {
+        oneRequest.userIds = userIds;
+      }
+
+      // Add GDPR consent if available
+      if (bidderRequest && bidderRequest.gdprConsent) {
+        oneRequest.gdprConsent = {
+          consentString: bidderRequest.gdprConsent.consentString || ''
+        };
+
+        if (typeof bidderRequest.gdprConsent.gdprApplies === 'boolean') {
+          oneRequest.gdprConsent.gdprApplies = bidderRequest.gdprConsent.gdprApplies;
+        }
+
+        if (bidderRequest.gdprConsent.addtlConsent) {
+          oneRequest.gdprConsent.addtlConsent = bidderRequest.gdprConsent.addtlConsent;
+        }
+      }
+
+      // Add CCPA/USP consent if available
+      if (bidderRequest && bidderRequest.uspConsent) {
+        oneRequest.uspConsent = bidderRequest.uspConsent;
+      }
+
+      // Add COPPA flag if configured
+      const coppa = config.getConfig('coppa');
+      if (coppa) {
+        oneRequest.coppa = coppa;
+      }
+
       return oneRequest
     });
 
-    const adPartnerRequestUrl = buildUrl({
+    const smartytechRequestUrl = buildUrl({
       protocol: ENDPOINT_PROTOCOL,
       hostname: ENDPOINT_DOMAIN,
       pathname: ENDPOINT_PATH,
     });
 
-    return {
+    // Get chunk size from adapter configuration
+    const adapterSettings = config.getConfig(BIDDER_CODE) || {};
+    const chunkSize = deepAccess(adapterSettings, 'chunkSize', 10);
+
+    // Split bid requests into chunks
+    const bidChunks = chunk(bidRequests, chunkSize);
+
+    // Return array of request objects, one for each chunk
+    return bidChunks.map(bidChunk => ({
       method: 'POST',
-      url: adPartnerRequestUrl,
-      data: bidRequests
-    };
+      url: smartytechRequestUrl,
+      data: bidChunk
+    }));
   },
 
   interpretResponse: function (serverResponse, bidRequest) {
diff --git a/test/spec/modules/smartytechBidAdapter_spec.js b/test/spec/modules/smartytechBidAdapter_spec.js
index fe6af7ff101..24383e3e836 100644
--- a/test/spec/modules/smartytechBidAdapter_spec.js
+++ b/test/spec/modules/smartytechBidAdapter_spec.js
@@ -182,6 +182,43 @@ function mockRefererData() {
   }
 }
 
+function mockBidderRequestWithConsents() {
+  return {
+    refererInfo: {
+      page: 'https://some-test.page'
+    },
+    gdprConsent: {
+      gdprApplies: true,
+      consentString: 'COzTVhaOzTVhaGvAAAENAiCIAP_AAH_AAAAAAEEUACCKAAA',
+      addtlConsent: '1~1.35.41.101'
+    },
+    uspConsent: '1YNN'
+  }
+}
+
+function mockBidRequestWithUserIds(mediaType, size, customSizes) {
+  const requests = mockBidRequestListData(mediaType, size, customSizes);
+  return requests.map(request => ({
+    ...request,
+    userIdAsEids: [
+      {
+        source: 'unifiedid.com',
+        uids: [{
+          id: 'test-unified-id',
+          atype: 1
+        }]
+      },
+      {
+        source: 'pubcid.org',
+        uids: [{
+          id: 'test-pubcid',
+          atype: 1
+        }]
+      }
+    ]
+  }));
+}
+
 function mockResponseData(requestData) {
   const data = {}
   requestData.data.forEach((request, index) => {
@@ -229,20 +266,25 @@ describe('SmartyTechDSPAdapter: buildRequests', () => {
   });
   it('correct request URL', () => {
     const request = spec.buildRequests(mockBidRequest, mockReferer);
-    expect(request.url).to.be.equal(`${ENDPOINT_PROTOCOL}://${ENDPOINT_DOMAIN}${ENDPOINT_PATH}`)
+    request.forEach(req => {
+      expect(req.url).to.be.equal(`${ENDPOINT_PROTOCOL}://${ENDPOINT_DOMAIN}${ENDPOINT_PATH}`)
+    });
   });
   it('correct request method', () => {
     const request = spec.buildRequests(mockBidRequest, mockReferer);
-    expect(request.method).to.be.equal(`POST`)
+    request.forEach(req => {
+      expect(req.method).to.be.equal(`POST`)
+    });
   });
   it('correct request data', () => {
-    const data = spec.buildRequests(mockBidRequest, mockReferer).data;
-    data.forEach((request, index) => {
-      expect(request.adUnitCode).to.be.equal(mockBidRequest[index].adUnitCode);
-      expect(request.banner).to.be.equal(mockBidRequest[index].mediaTypes.banner);
-      expect(request.bidId).to.be.equal(mockBidRequest[index].bidId);
-      expect(request.endpointId).to.be.equal(mockBidRequest[index].params.endpointId);
-      expect(request.referer).to.be.equal(mockReferer.refererInfo.page);
+    const request = spec.buildRequests(mockBidRequest, mockReferer);
+    const data = request.flatMap(resp => resp.data);
+    data.forEach((req, index) => {
+      expect(req.adUnitCode).to.be.equal(mockBidRequest[index].adUnitCode);
+      expect(req.banner).to.be.equal(mockBidRequest[index].mediaTypes.banner);
+      expect(req.bidId).to.be.equal(mockBidRequest[index].bidId);
+      expect(req.endpointId).to.be.equal(mockBidRequest[index].params.endpointId);
+      expect(req.referer).to.be.equal(mockReferer.refererInfo.page);
     })
   });
 });
@@ -256,9 +298,10 @@ describe('SmartyTechDSPAdapter: buildRequests banner custom size', () => {
   });
 
   it('correct request data', () => {
-    const data = spec.buildRequests(mockBidRequest, mockReferer).data;
-    data.forEach((request, index) => {
-      expect(request.banner.sizes).to.be.equal(mockBidRequest[index].params.sizes);
+    const request = spec.buildRequests(mockBidRequest, mockReferer);
+    const data = request.flatMap(resp => resp.data);
+    data.forEach((req, index) => {
+      expect(req.banner.sizes).to.be.equal(mockBidRequest[index].params.sizes);
     })
   });
 });
@@ -272,9 +315,10 @@ describe('SmartyTechDSPAdapter: buildRequests video custom size', () => {
   });
 
   it('correct request data', () => {
-    const data = spec.buildRequests(mockBidRequest, mockReferer).data;
-    data.forEach((request, index) => {
-      expect(request.video.sizes).to.be.equal(mockBidRequest[index].params.sizes);
+    const request = spec.buildRequests(mockBidRequest, mockReferer);
+    const data = request.flatMap(resp => resp.data);
+    data.forEach((req, index) => {
+      expect(req.video.sizes).to.be.equal(mockBidRequest[index].params.sizes);
     })
   });
 });
@@ -287,7 +331,7 @@ describe('SmartyTechDSPAdapter: interpretResponse', () => {
   beforeEach(() => {
     const brData = mockBidRequestListData('banner', 2, []);
     mockReferer = mockRefererData();
-    request = spec.buildRequests(brData, mockReferer);
+    request = spec.buildRequests(brData, mockReferer)[0];
     mockBidRequest = {
       data: brData
     }
@@ -333,7 +377,7 @@ describe('SmartyTechDSPAdapter: interpretResponse video', () => {
   beforeEach(() => {
     const brData = mockBidRequestListData('video', 2, []);
     mockReferer = mockRefererData();
-    request = spec.buildRequests(brData, mockReferer);
+    request = spec.buildRequests(brData, mockReferer)[0];
     mockBidRequest = {
       data: brData
     }
@@ -359,3 +403,100 @@ describe('SmartyTechDSPAdapter: interpretResponse video', () => {
     });
   });
 });
+
+describe('SmartyTechDSPAdapter: buildRequests with user IDs', () => {
+  let mockBidRequest;
+  let mockReferer;
+  beforeEach(() => {
+    mockBidRequest = mockBidRequestWithUserIds('banner', 2, []);
+    mockReferer = mockRefererData();
+  });
+
+  it('should include userIds when available', () => {
+    const request = spec.buildRequests(mockBidRequest, mockReferer);
+    const data = request.flatMap(resp => resp.data);
+
+    data.forEach((req, index) => {
+      expect(req).to.have.property('userIds');
+      expect(req.userIds).to.deep.equal(mockBidRequest[index].userIdAsEids);
+    });
+  });
+
+  it('should not include userIds when not available', () => {
+    const bidRequestWithoutUserIds = mockBidRequestListData('banner', 2, []);
+    const request = spec.buildRequests(bidRequestWithoutUserIds, mockReferer);
+    const data = request.flatMap(resp => resp.data);
+
+    data.forEach((req) => {
+      expect(req).to.not.have.property('userIds');
+    });
+  });
+
+  it('should not include userIds when userIdAsEids is undefined', () => {
+    const bidRequestWithUndefinedUserIds = mockBidRequestListData('banner', 2, []).map(req => {
+      const {userIdAsEids, ...requestWithoutUserIds} = req;
+      return requestWithoutUserIds;
+    });
+    const request = spec.buildRequests(bidRequestWithUndefinedUserIds, mockReferer);
+    const data = request.flatMap(resp => resp.data);
+
+    data.forEach((req) => {
+      expect(req).to.not.have.property('userIds');
+    });
+  });
+
+  it('should not include userIds when userIdAsEids is empty array', () => {
+    const bidRequestWithEmptyUserIds = mockBidRequestListData('banner', 2, []).map(req => ({
+      ...req,
+      userIdAsEids: []
+    }));
+    const request = spec.buildRequests(bidRequestWithEmptyUserIds, mockReferer);
+    const data = request.flatMap(resp => resp.data);
+
+    data.forEach((req) => {
+      expect(req).to.not.have.property('userIds');
+    });
+  });
+});
+
+describe('SmartyTechDSPAdapter: buildRequests with consent data', () => {
+  let mockBidRequest;
+  let mockBidderRequest;
+  beforeEach(() => {
+    mockBidRequest = mockBidRequestListData('banner', 2, []);
+    mockBidderRequest = mockBidderRequestWithConsents();
+  });
+
+  it('should include GDPR consent when available', () => {
+    const request = spec.buildRequests(mockBidRequest, mockBidderRequest);
+    const data = request.flatMap(resp => resp.data);
+
+    data.forEach((req) => {
+      expect(req).to.have.property('gdprConsent');
+      expect(req.gdprConsent.gdprApplies).to.be.true;
+      expect(req.gdprConsent.consentString).to.equal('COzTVhaOzTVhaGvAAAENAiCIAP_AAH_AAAAAAEEUACCKAAA');
+      expect(req.gdprConsent.addtlConsent).to.equal('1~1.35.41.101');
+    });
+  });
+
+  it('should include USP consent when available', () => {
+    const request = spec.buildRequests(mockBidRequest, mockBidderRequest);
+    const data = request.flatMap(resp => resp.data);
+
+    data.forEach((req) => {
+      expect(req).to.have.property('uspConsent');
+      expect(req.uspConsent).to.equal('1YNN');
+    });
+  });
+
+  it('should not include consent data when not available', () => {
+    const mockReferer = mockRefererData();
+    const request = spec.buildRequests(mockBidRequest, mockReferer);
+    const data = request.flatMap(resp => resp.data);
+
+    data.forEach((req) => {
+      expect(req).to.not.have.property('gdprConsent');
+      expect(req).to.not.have.property('uspConsent');
+    });
+  });
+});