diff --git a/src/main/java/org/prebid/server/bidder/aidem/AidemBidder.java b/src/main/java/org/prebid/server/bidder/aidem/AidemBidder.java
index 4591cb7bb3b..f78e7ebeffc 100644
--- a/src/main/java/org/prebid/server/bidder/aidem/AidemBidder.java
+++ b/src/main/java/org/prebid/server/bidder/aidem/AidemBidder.java
@@ -1,5 +1,6 @@
 package org.prebid.server.bidder.aidem;
 
+import com.fasterxml.jackson.core.type.TypeReference;
 import com.iab.openrtb.request.BidRequest;
 import com.iab.openrtb.request.Imp;
 import com.iab.openrtb.response.Bid;
@@ -15,6 +16,8 @@
 import org.prebid.server.exception.PreBidException;
 import org.prebid.server.json.DecodeException;
 import org.prebid.server.json.JacksonMapper;
+import org.prebid.server.proto.openrtb.ext.ExtPrebid;
+import org.prebid.server.proto.openrtb.ext.request.aidem.ExtImpAidem;
 import org.prebid.server.proto.openrtb.ext.response.BidType;
 import org.prebid.server.util.BidderUtil;
 import org.prebid.server.util.HttpUtil;
@@ -27,6 +30,11 @@
 
 public class AidemBidder implements Bidder<BidRequest> {
 
+    private static final TypeReference<ExtPrebid<?, ExtImpAidem>> AIDEM_EXT_TYPE_REFERENCE =
+            new TypeReference<>() {
+            };
+    private static final String PUBLISHER_ID_MACRO = "{{PublisherId}}";
+
     private final String endpointUrl;
     private final JacksonMapper mapper;
 
@@ -37,7 +45,24 @@ public AidemBidder(String endpointUrl, JacksonMapper mapper) {
 
     @Override
     public final Result<List<HttpRequest<BidRequest>>> makeHttpRequests(BidRequest bidRequest) {
-        return Result.withValue(BidderUtil.defaultRequest(bidRequest, endpointUrl, mapper));
+        try {
+            final ExtImpAidem impExt = parseImpExt(bidRequest.getImp().get(0));
+            return Result.withValue(BidderUtil.defaultRequest(bidRequest, makeUrl(impExt), mapper));
+        } catch (PreBidException e) {
+            return Result.withError(BidderError.badInput(e.getMessage()));
+        }
+    }
+
+    private ExtImpAidem parseImpExt(Imp imp) {
+        try {
+            return mapper.mapper().convertValue(imp.getExt(), AIDEM_EXT_TYPE_REFERENCE).getBidder();
+        } catch (IllegalArgumentException e) {
+            throw new PreBidException("Missing bidder ext in impression with id: " + imp.getId());
+        }
+    }
+
+    private String makeUrl(ExtImpAidem extImpAidem) {
+        return endpointUrl.replace(PUBLISHER_ID_MACRO, extImpAidem.getPublisherId());
     }
 
     @Override
@@ -93,9 +118,8 @@ private static BidType resolveBidType(Bid bid) throws PreBidException {
             case 2 -> BidType.video;
             case 3 -> BidType.audio;
             case 4 -> BidType.xNative;
-            default ->
-                    throw new PreBidException("Unable to fetch mediaType in multi-format: %s"
-                            .formatted(bid.getImpid()));
+            default -> throw new PreBidException("Unable to fetch mediaType in multi-format: %s"
+                    .formatted(bid.getImpid()));
         };
     }
 }
diff --git a/src/main/resources/bidder-config/aidem.yaml b/src/main/resources/bidder-config/aidem.yaml
index 89568509b24..cd8b37239ab 100644
--- a/src/main/resources/bidder-config/aidem.yaml
+++ b/src/main/resources/bidder-config/aidem.yaml
@@ -1,6 +1,6 @@
 adapters:
   aidem:
-    endpoint: https://zero.aidemsrv.com/ortb/v2.6/bid/request
+    endpoint: https://zero.aidemsrv.com/ortb/v2.6/bid/request?billing_id={{PublisherId}}
     modifyingVastXmlAllowed: true
     meta-info:
       maintainer-email: prebid@aidem.com
diff --git a/src/test/java/org/prebid/server/bidder/aidem/AidemBidderTest.java b/src/test/java/org/prebid/server/bidder/aidem/AidemBidderTest.java
index 43bb785d449..9e68a8b9fb4 100644
--- a/src/test/java/org/prebid/server/bidder/aidem/AidemBidderTest.java
+++ b/src/test/java/org/prebid/server/bidder/aidem/AidemBidderTest.java
@@ -34,7 +34,7 @@
 
 public class AidemBidderTest extends VertxTest {
 
-    private static final String ENDPOINT_URL = "https://randomurl.com";
+    private static final String ENDPOINT_URL = "https://randomurl.com?param={{PublisherId}}";
 
     private final AidemBidder target = new AidemBidder(ENDPOINT_URL, jacksonMapper);
 
@@ -46,7 +46,9 @@ public void creationShouldFailOnInvalidEndpointUrl() {
     @Test
     public void makeHttpRequestsShouldCreateExpectedUrl() {
         // given
-        final BidRequest bidRequest = givenBidRequest(identity());
+        final ExtImpAidem impExt = ExtImpAidem.of(null, "publisherId", null, null);
+        final BidRequest bidRequest = givenBidRequest(impBuilder ->
+                impBuilder.ext(mapper.valueToTree(ExtPrebid.of(null, impExt))));
 
         // when
         final Result<List<HttpRequest<BidRequest>>> result = target.makeHttpRequests(bidRequest);
@@ -55,7 +57,7 @@ public void makeHttpRequestsShouldCreateExpectedUrl() {
         assertThat(result.getErrors()).isEmpty();
         assertThat(result.getValue()).hasSize(1)
                 .extracting(HttpRequest::getUri)
-                .containsExactly("https://randomurl.com");
+                .containsExactly("https://randomurl.com?param=publisherId");
     }
 
     @Test
@@ -210,13 +212,6 @@ private static BidRequest givenBidRequest(
                 .build();
     }
 
-    private static BidResponse givenBidResponse(Function<Bid.BidBuilder, Bid.BidBuilder> bidCustomizer) {
-        return BidResponse.builder()
-                .seatbid(singletonList(SeatBid.builder().bid(singletonList(bidCustomizer.apply(Bid.builder()).build()))
-                        .build()))
-                .build();
-    }
-
     private static BidResponse givenBidResponse(Bid... bids) {
         return BidResponse.builder()
                 .cur("USD")
@@ -235,10 +230,6 @@ private static Imp givenImp(Function<Imp.ImpBuilder, Imp.ImpBuilder> impCustomiz
                 .build();
     }
 
-    private static Bid givenBid() {
-        return Bid.builder().impid("123").build();
-    }
-
     private static BidderCall<BidRequest> givenHttpCall(BidRequest bidRequest, String body) {
         return BidderCall.succeededHttp(
                 HttpRequest.<BidRequest>builder().payload(bidRequest).build(),