diff --git a/adapters/amx/amx.go b/adapters/amx/amx.go
index a738efe11f3..5aaa00694c0 100644
--- a/adapters/amx/amx.go
+++ b/adapters/amx/amx.go
@@ -112,8 +112,10 @@ func (adapter *AMXAdapter) MakeRequests(request *openrtb2.BidRequest, req *adapt
 }
 
 type amxBidExt struct {
-	StartDelay   *int `json:"startdelay,omitempty"`
-	CreativeType *int `json:"ct,omitempty"`
+	StartDelay   *int    `json:"startdelay,omitempty"`
+	CreativeType *int    `json:"ct,omitempty"`
+	DemandSource *string `json:"ds,omitempty"`
+	BidderCode   *string `json:"bc,omitempty"`
 }
 
 // MakeBids will parse the bids from the AMX server
@@ -154,12 +156,25 @@ func (adapter *AMXAdapter) MakeBids(request *openrtb2.BidRequest, externalReques
 				continue
 			}
 
+			demandSource := ""
+			if bidExt.DemandSource != nil {
+				demandSource = *bidExt.DemandSource
+			}
+
 			bidType := getMediaTypeForBid(bidExt)
 			b := &adapters.TypedBid{
-				Bid:     &bid,
+				Bid: &bid,
+				BidMeta: &openrtb_ext.ExtBidPrebidMeta{
+					AdvertiserDomains: bid.ADomain,
+					DemandSource:      demandSource,
+				},
 				BidType: bidType,
 			}
 
+			if bidExt.BidderCode != nil {
+				b.Seat = openrtb_ext.BidderName(*bidExt.BidderCode)
+			}
+
 			bidResponse.Bids = append(bidResponse.Bids, b)
 		}
 	}
diff --git a/adapters/amx/amx_test.go b/adapters/amx/amx_test.go
index d8c73a6141f..c03df334359 100644
--- a/adapters/amx/amx_test.go
+++ b/adapters/amx/amx_test.go
@@ -182,19 +182,24 @@ func TestMakeBids(t *testing.T) {
 	}
 
 	type testCase struct {
-		bidType openrtb_ext.BidType
-		adm     string
-		extRaw  string
-		valid   bool
+		bidType      openrtb_ext.BidType
+		adm          string
+		extRaw       string
+		seatName     string
+		demandSource string
+		valid        bool
 	}
 
 	tests := []testCase{
-		{openrtb_ext.BidTypeNative, `{"assets":[]}`, `{"ct":10}`, true},
-		{openrtb_ext.BidTypeBanner, sampleDisplayADM, `{"ct": 1}`, true},
-		{openrtb_ext.BidTypeBanner, sampleDisplayADM, `{"ct": "invalid"}`, false},
-		{openrtb_ext.BidTypeBanner, sampleDisplayADM, `{}`, true},
-		{openrtb_ext.BidTypeVideo, sampleVastADM, `{"startdelay": 1}`, true},
-		{openrtb_ext.BidTypeBanner, sampleVastADM, `{"ct": 1}`, true}, // the server shouldn't do this
+		{openrtb_ext.BidTypeNative, `{"assets":[]}`, `{"ct":10}`, "", "", true},
+		{openrtb_ext.BidTypeBanner, sampleDisplayADM, `{"ct": 1}`, "", "", true},
+		{openrtb_ext.BidTypeBanner, sampleDisplayADM, `{"ct": "invalid"}`, "", "", false},
+		{openrtb_ext.BidTypeBanner, sampleDisplayADM, `{}`, "", "", true},
+		{openrtb_ext.BidTypeBanner, sampleDisplayADM, `{"bc": "amx-pmp"}`, "amx-pmp", "", true},
+		{openrtb_ext.BidTypeBanner, sampleDisplayADM, `{"ds": "pmp-1"}`, "", "pmp-1", true},
+		{openrtb_ext.BidTypeBanner, sampleDisplayADM, `{"bc": "amx-pmp", "ds": "pmp-1"}`, "amx-pmp", "pmp-1", true},
+		{openrtb_ext.BidTypeVideo, sampleVastADM, `{"startdelay": 1}`, "", "", true},
+		{openrtb_ext.BidTypeBanner, sampleVastADM, `{"ct": 1}`, "", "", true}, // the server shouldn't do this
 	}
 
 	for _, test := range tests {
@@ -233,6 +238,10 @@ func TestMakeBids(t *testing.T) {
 
 		assert.Len(t, bids.Bids, 1)
 		assert.Equal(t, test.bidType, bids.Bids[0].BidType)
+
+		br := bids.Bids[0]
+		assert.Equal(t, openrtb_ext.BidderName(test.seatName), br.Seat)
+		assert.Equal(t, test.demandSource, br.BidMeta.DemandSource)
 	}
 
 }
diff --git a/adapters/amx/amxtest/exemplary/display-multiple.json b/adapters/amx/amxtest/exemplary/display-multiple.json
index 330bc00d77b..76d97b17042 100644
--- a/adapters/amx/amxtest/exemplary/display-multiple.json
+++ b/adapters/amx/amxtest/exemplary/display-multiple.json
@@ -214,6 +214,7 @@
                 "cid": "668",
                 "crid": "253510977",
                 "ext": {
+                  "bc": "amx-pmp"
                 },
                 "h": 250,
                 "id": "8911104898220857797",
@@ -258,7 +259,9 @@
             ],
             "cid": "668",
             "crid": "253510977",
-            "ext": {},
+            "ext": {
+              "bc": "amx-pmp"
+            },
             "h": 250,
             "id": "8911104898220857797",
             "impid": "6a362d3a9db4eba300x250",
@@ -266,6 +269,7 @@
             "price": 0.50,
             "w": 300
           },
+          "seat": "amx-pmp",
           "type": "banner"
         },
         {