diff --git a/adapters/roundhouseads/params_test.go b/adapters/roundhouseads/params_test.go
new file mode 100644
index 0000000000..674feae96c
--- /dev/null
+++ b/adapters/roundhouseads/params_test.go
@@ -0,0 +1,53 @@
+package roundhouseads
+
+import (
+	"encoding/json"
+	"testing"
+
+	"github.com/prebid/prebid-server/v3/openrtb_ext"
+)
+
+func TestValidParams(t *testing.T) {
+	validator, err := openrtb_ext.NewBidderParamsValidator("../../static/bidder-params")
+	if err != nil {
+		t.Fatalf("Failed to fetch the json-schemas. %v", err)
+	}
+
+	for _, validParam := range validParams {
+		if err := validator.Validate(openrtb_ext.BidderRoundhouseads, json.RawMessage(validParam)); err != nil {
+			t.Errorf("Schema rejected Roundhouseads params: %s", validParam)
+		}
+	}
+}
+
+// TestInvalidParams makes sure that the Roundhouseads schema rejects all the imp.ext fields we don't support.
+func TestInvalidParams(t *testing.T) {
+	validator, err := openrtb_ext.NewBidderParamsValidator("../../static/bidder-params")
+	if err != nil {
+		t.Fatalf("Failed to fetch the json-schemas. %v", err)
+	}
+
+	for _, invalidParam := range invalidParams {
+		if err := validator.Validate(openrtb_ext.BidderRoundhouseads, json.RawMessage(invalidParam)); err == nil {
+			t.Errorf("Schema allowed unexpected params: %s", invalidParam)
+		}
+	}
+}
+
+var validParams = []string{
+	`{"publisherId": "123456"}`,
+	`{"publisherId": "pub-123456"}`,
+	`{"publisherId": "publisherIDAllString"}`,
+}
+
+var invalidParams = []string{
+	``,
+	`null`,
+	`true`,
+	`5`,
+	`4.2`,
+	`[]`,
+	`{}`,
+	`{"publisherId": 123456}`,
+	`{"publisherId": 0}`,
+}
diff --git a/adapters/roundhouseads/roundhouseads.go b/adapters/roundhouseads/roundhouseads.go
new file mode 100644
index 0000000000..ab2d0ba0e8
--- /dev/null
+++ b/adapters/roundhouseads/roundhouseads.go
@@ -0,0 +1,196 @@
+package roundhouseads
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"regexp"
+	"text/template"
+
+	"github.com/prebid/prebid-server/v3/adapters"
+	"github.com/prebid/prebid-server/v3/config"
+	"github.com/prebid/prebid-server/v3/macros"
+	"github.com/prebid/prebid-server/v3/openrtb_ext"
+
+	"github.com/prebid/openrtb/v20/openrtb2"
+)
+
+const PREBID_INTEGRATION_TYPE = "1"
+
+type adapter struct {
+	bidderEndpoint string
+}
+
+type ExtImpBidderRoundhouseads struct {
+	adapters.ExtImpBidder
+}
+
+func (a *adapter) MakeRequests(request *openrtb2.BidRequest, reqInfo *adapters.ExtraRequestInfo) ([]*adapters.RequestData, []error) {
+	pubID, err := getPublisherId(request.Imp)
+
+	if err != nil {
+		return nil, []error{err}
+	}
+
+	modifiedImps := make([]openrtb2.Imp, 0, len(request.Imp))
+
+	for _, imp := range request.Imp {
+
+		if imp.Banner != nil {
+			if len(imp.Banner.Format) > 0 {
+				firstFormat := imp.Banner.Format[0]
+				bannerCopy := *imp.Banner
+				bannerCopy.H = &firstFormat.H
+				bannerCopy.W = &firstFormat.W
+				imp.Banner = &bannerCopy
+
+			}
+		}
+
+		modifiedImps = append(modifiedImps, imp)
+	}
+
+	request.Imp = modifiedImps
+
+	if request.Site != nil {
+		siteCopy := *request.Site
+		if siteCopy.Publisher != nil {
+			publisherCopy := *siteCopy.Publisher
+			if pubID != "" {
+				publisherCopy.ID = pubID
+			}
+			siteCopy.Publisher = &publisherCopy
+		} else {
+			siteCopy.Publisher = &openrtb2.Publisher{ID: pubID}
+		}
+		request.Site = &siteCopy
+	} else if request.App != nil {
+		appCopy := *request.App
+		if appCopy.Publisher != nil {
+			publisherCopy := *appCopy.Publisher
+			if pubID != "" {
+				publisherCopy.ID = pubID
+			}
+			appCopy.Publisher = &publisherCopy
+		} else {
+			appCopy.Publisher = &openrtb2.Publisher{ID: pubID}
+		}
+		request.App = &appCopy
+	}
+
+	errs := make([]error, 0, len(request.Imp))
+	reqJSON, err := json.Marshal(request)
+	if err != nil {
+		errs = append(errs, err)
+		return nil, errs
+	}
+
+	headers := http.Header{}
+	headers.Add("Content-Type", "application/json;charset=utf-8")
+	headers.Add("Accept", "application/json")
+	headers.Add("x-integration-type", PREBID_INTEGRATION_TYPE)
+	return []*adapters.RequestData{{
+		Method:  "POST",
+		Uri:     a.bidderEndpoint,
+		Body:    reqJSON,
+		Headers: headers,
+		ImpIDs:  openrtb_ext.GetImpIDs(request.Imp),
+	}}, errs
+}
+
+func getPublisherId(impressions []openrtb2.Imp) (string, error) {
+	for _, imp := range impressions {
+
+		var bidderExt ExtImpBidderRoundhouseads
+		if err := json.Unmarshal(imp.Ext, &bidderExt); err != nil {
+			return "", err
+		}
+
+		var roundhouseadsExt openrtb_ext.ExtImpRoundhouseads
+		if err := json.Unmarshal(bidderExt.Bidder, &roundhouseadsExt); err != nil {
+			return "", err
+		}
+
+		if roundhouseadsExt.PublisherId != "" {
+			return roundhouseadsExt.PublisherId, nil
+		}
+	}
+	return "", nil
+}
+
+func (a *adapter) MakeBids(internalRequest *openrtb2.BidRequest, externalRequest *adapters.RequestData, response *adapters.ResponseData) (*adapters.BidderResponse, []error) {
+	if adapters.IsResponseStatusCodeNoContent(response) {
+		return adapters.NewBidderResponse(), nil
+	}
+
+	if err := adapters.CheckResponseStatusCodeForErrors(response); err != nil {
+		return nil, []error{err}
+	}
+
+	var bidResponse openrtb2.BidResponse
+	if err := json.Unmarshal(response.Body, &bidResponse); err != nil {
+		return nil, []error{err}
+	}
+
+	bidderResponse := adapters.NewBidderResponse()
+	bidderResponse.Currency = bidResponse.Cur
+
+	for _, seatBid := range bidResponse.SeatBid {
+		for _, bid := range seatBid.Bid {
+			bid := bid
+
+			bidType, err := getBidType(bid.MType)
+
+			if err != nil {
+				return nil, []error{err}
+			}
+
+			b := &adapters.TypedBid{
+				Bid:     &bid,
+				BidType: bidType,
+			}
+			bidderResponse.Bids = append(bidderResponse.Bids, b)
+		}
+	}
+
+	return bidderResponse, nil
+}
+
+func getBidType(markupType openrtb2.MarkupType) (openrtb_ext.BidType, error) {
+	switch markupType {
+	case openrtb2.MarkupBanner:
+		return openrtb_ext.BidTypeBanner, nil
+	case openrtb2.MarkupVideo:
+		return openrtb_ext.BidTypeVideo, nil
+	case openrtb2.MarkupNative:
+		return openrtb_ext.BidTypeNative, nil
+	default:
+		return "", fmt.Errorf("unsupported mtype: %d", markupType)
+	}
+}
+
+func Builder(bidderName openrtb_ext.BidderName, config config.Adapter, server config.Server) (adapters.Bidder, error) {
+	template, err := template.New("endpointTemplate").Parse(config.Endpoint)
+	if err != nil {
+		return nil, fmt.Errorf("unable to parse endpoint url template: %v", err)
+	}
+
+	if len(config.ExtraAdapterInfo) > 0 {
+		isValidEndpoint, err := regexp.Match("([a-z]+)$", []byte(config.ExtraAdapterInfo))
+		if !isValidEndpoint || err != nil {
+			return nil, errors.New("ExtraAdapterInfo must be a simple string provided by Roundhouseads")
+		}
+	}
+
+	urlParams := macros.EndpointTemplateParams{SupplyId: config.ExtraAdapterInfo}
+	bidderEndpoint, err := macros.ResolveMacros(template, urlParams)
+
+	if err != nil {
+		return nil, fmt.Errorf("unable to resolve endpoint macros: %v", err)
+	}
+
+	return &adapter{
+		bidderEndpoint: bidderEndpoint,
+	}, nil
+}
diff --git a/adapters/roundhouseads/roundhouseads_test.go b/adapters/roundhouseads/roundhouseads_test.go
new file mode 100644
index 0000000000..e6e7872a3d
--- /dev/null
+++ b/adapters/roundhouseads/roundhouseads_test.go
@@ -0,0 +1,385 @@
+package roundhouseads
+
+import (
+	"encoding/json"
+	"net/http"
+	"testing"
+
+	"github.com/prebid/openrtb/v20/openrtb2"
+	"github.com/prebid/prebid-server/v3/adapters"
+	"github.com/prebid/prebid-server/v3/adapters/adapterstest"
+	"github.com/prebid/prebid-server/v3/config"
+	"github.com/prebid/prebid-server/v3/openrtb_ext"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestEndpointTemplateMalformed(t *testing.T) {
+	_, buildErr := Builder(openrtb_ext.BidderRoundhouseads, config.Adapter{
+		Endpoint: "{{Malformed}}"},
+		config.Server{ExternalUrl: "http://hosturl.com", GvlID: 1, DataCenter: "2"})
+
+	assert.Error(t, buildErr)
+}
+
+func TestBadConfig(t *testing.T) {
+	_, buildErr := Builder(openrtb_ext.BidderRoundhouseads, config.Adapter{
+		Endpoint:         `http://it.doesnt.matter/bid`,
+		ExtraAdapterInfo: "12365217635",
+	},
+		config.Server{ExternalUrl: "http://hosturl.com", GvlID: 1, DataCenter: "2"})
+
+	assert.Error(t, buildErr)
+}
+
+func TestCorrectConfig(t *testing.T) {
+	bidder, buildErr := Builder(openrtb_ext.BidderRoundhouseads, config.Adapter{
+		Endpoint:         `http://it.doesnt.matter/bid`,
+		ExtraAdapterInfo: `abcde`,
+	},
+		config.Server{ExternalUrl: "http://hosturl.com", GvlID: 1, DataCenter: "2"})
+
+	assert.NoError(t, buildErr)
+	assert.NotNil(t, bidder)
+}
+
+func TestEmptyConfig(t *testing.T) {
+	bidder, buildErr := Builder(openrtb_ext.BidderRoundhouseads, config.Adapter{
+		Endpoint:         `https://roundhouseads.com/openrtb2`,
+		ExtraAdapterInfo: `roundhouseads`,
+	},
+		config.Server{ExternalUrl: "http://hosturl.com", GvlID: 1, DataCenter: "2"})
+
+	assert.NoError(t, buildErr)
+	assert.NotNil(t, bidder)
+}
+
+func TestJsonSamples(t *testing.T) {
+	bidder, err := Builder(
+		openrtb_ext.BidderRoundhouseads,
+		config.Adapter{Endpoint: "https://roundhouseads.com/openrtb2", ExtraAdapterInfo: "roundhouseads"},
+		config.Server{ExternalUrl: "http://hosturl.com", GvlID: 1, DataCenter: "1"},
+	)
+	assert.Nil(t, err)
+	adapterstest.RunJSONBidderTest(t, "roundhouseadstest", bidder)
+}
+
+func TestGetBidType(t *testing.T) {
+	type args struct {
+		markupType openrtb2.MarkupType
+	}
+	tests := []struct {
+		name              string
+		args              args
+		markupType        openrtb2.MarkupType
+		expectedBidTypeId openrtb_ext.BidType
+		wantErr           bool
+	}{
+		{
+			name: "banner",
+			args: args{
+				markupType: openrtb2.MarkupBanner,
+			},
+			expectedBidTypeId: openrtb_ext.BidTypeBanner,
+			wantErr:           false,
+		},
+		{
+			name: "video",
+			args: args{
+				markupType: openrtb2.MarkupVideo,
+			},
+			expectedBidTypeId: openrtb_ext.BidTypeVideo,
+			wantErr:           false,
+		},
+		{
+			name: "native",
+			args: args{
+				markupType: openrtb2.MarkupNative,
+			},
+			expectedBidTypeId: openrtb_ext.BidTypeNative,
+			wantErr:           false,
+		},
+		{
+			name: "invalid",
+			args: args{
+				markupType: -1,
+			},
+			expectedBidTypeId: "",
+			wantErr:           true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			bidType, err := getBidType(tt.args.markupType)
+			assert.Equal(t, tt.wantErr, err != nil)
+			assert.Equal(t, tt.expectedBidTypeId, bidType)
+		})
+	}
+}
+
+func TestGetPublisherId(t *testing.T) {
+	type args struct {
+		impressions []openrtb2.Imp
+	}
+	tests := []struct {
+		name                string
+		args                args
+		expectedPublisherId string
+		wantErr             bool
+	}{
+		{
+			name: "valid_publisher_Id",
+			args: args{
+				impressions: []openrtb2.Imp{
+					{
+						Video: &openrtb2.Video{},
+						Ext:   json.RawMessage(`{"bidder":{"publisherId":"1"}}`),
+					},
+				},
+			},
+			expectedPublisherId: "1",
+			wantErr:             false,
+		},
+		{
+			name: "multiple_valid_publisher_Id",
+			args: args{
+				impressions: []openrtb2.Imp{
+					{
+						Video: &openrtb2.Video{},
+						Ext:   json.RawMessage(`{"bidder":{"publisherId":"1"}}`),
+					},
+					{
+						Video: &openrtb2.Video{},
+						Ext:   json.RawMessage(`{"bidder":{"publisherId":"2"}}`),
+					},
+				},
+			},
+			expectedPublisherId: "1",
+			wantErr:             false,
+		},
+		{
+			name: "not_publisherId_present",
+			args: args{
+				impressions: []openrtb2.Imp{
+					{
+						Video: &openrtb2.Video{},
+						Ext:   json.RawMessage(`{"bidder":{}}`),
+					},
+				},
+			},
+			expectedPublisherId: "",
+			wantErr:             false,
+		},
+		{
+			name: "nil_publisherId_present",
+			args: args{
+				impressions: []openrtb2.Imp{
+					{
+						Video: &openrtb2.Video{},
+						Ext:   json.RawMessage(`{"bidder":{"publisherId":""}}`),
+					},
+				},
+			},
+			expectedPublisherId: "",
+			wantErr:             false,
+		},
+		{
+			name: "no_impressions",
+			args: args{
+				impressions: []openrtb2.Imp{},
+			},
+			expectedPublisherId: "",
+			wantErr:             false,
+		},
+		{
+			name: "invalid_bidder_object",
+			args: args{
+				impressions: []openrtb2.Imp{
+					{
+						Video: &openrtb2.Video{},
+						Ext:   json.RawMessage(`{"bidder":{"doesnotexistprop":""}}`),
+					},
+				},
+			},
+			expectedPublisherId: "",
+			wantErr:             false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			publisherId, err := getPublisherId(tt.args.impressions)
+			assert.Equal(t, tt.wantErr, err != nil)
+			assert.Equal(t, tt.expectedPublisherId, publisherId)
+		})
+	}
+}
+
+func TestRoundhouseadsAdapter_MakeRequests(t *testing.T) {
+	type fields struct {
+		URI string
+	}
+	type args struct {
+		request *openrtb2.BidRequest
+		reqInfo *adapters.ExtraRequestInfo
+	}
+	tests := []struct {
+		name            string
+		fields          fields
+		args            args
+		expectedReqData []*adapters.RequestData
+		wantErr         bool
+	}{
+		{
+			name: "invalid_bidderparams",
+			args: args{
+				request: &openrtb2.BidRequest{Ext: json.RawMessage(`{"prebid":{"bidderparams":{:"123"}}}`)},
+			},
+			wantErr: true,
+		},
+		{
+			name: "request_with_App",
+			args: args{
+				request: &openrtb2.BidRequest{
+					App: &openrtb2.App{},
+					Ext: json.RawMessage(`{"prebid":{"bidderparams":{"wrapper":"123"}}}`),
+				},
+			},
+			wantErr: false,
+		},
+		{
+			name: "request_with_App_and_publisher",
+			args: args{
+				request: &openrtb2.BidRequest{
+					App: &openrtb2.App{Publisher: &openrtb2.Publisher{}},
+					Ext: json.RawMessage(`{"prebid":{"bidderparams":{"wrapper":"123"}}}`),
+				},
+			},
+			wantErr: false,
+		},
+		{
+			name: "request_with_Site",
+			args: args{
+				request: &openrtb2.BidRequest{
+					Site: &openrtb2.Site{},
+					Ext:  json.RawMessage(`{"prebid":{"bidderparams":{"wrapper":"123"}}}`),
+				},
+			},
+			wantErr: false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			a := &adapter{
+				bidderEndpoint: tt.fields.URI,
+			}
+			gotReqData, gotErr := a.MakeRequests(tt.args.request, tt.args.reqInfo)
+			assert.Equal(t, tt.wantErr, len(gotErr) != 0)
+			if tt.wantErr == false {
+				assert.NotNil(t, gotReqData)
+			}
+		})
+	}
+}
+
+func TestRoundhouseadsAdapter_MakeBids(t *testing.T) {
+	type fields struct {
+		URI string
+	}
+	type args struct {
+		internalRequest *openrtb2.BidRequest
+		externalRequest *adapters.RequestData
+		response        *adapters.ResponseData
+	}
+	tests := []struct {
+		name     string
+		fields   fields
+		args     args
+		wantErr  []error
+		wantResp *adapters.BidderResponse
+	}{
+		{
+			name: "happy_path_valid_response_with_all_bid_params",
+			args: args{
+				response: &adapters.ResponseData{
+					StatusCode: http.StatusOK,
+					Body:       []byte(`{"id": "test-request-id", "seatbid":[{"seat": "958", "bid":[{"mtype": 1, "id": "7706636740145184841", "impid": "test-imp-id", "price": 0.500000, "adid": "29681110", "adm": "some-test-ad", "adomain":["roundhouseads.com"], "crid": "29681110", "h": 250, "w": 300, "dealid": "testdeal", "ext":{"dspid": 6, "deal_channel": 1, "prebiddealpriority": 1}}]}], "bidid": "5778926625248726496", "cur": "USD"}`),
+				},
+			},
+			wantErr: nil,
+			wantResp: &adapters.BidderResponse{
+				Bids: []*adapters.TypedBid{
+					{
+						Bid: &openrtb2.Bid{
+							ID:      "7706636740145184841",
+							ImpID:   "test-imp-id",
+							Price:   0.500000,
+							AdID:    "29681110",
+							AdM:     "some-test-ad",
+							ADomain: []string{"roundhouseads.com"},
+							CrID:    "29681110",
+							H:       250,
+							W:       300,
+							DealID:  "testdeal",
+							Ext:     json.RawMessage(`{"dspid": 6, "deal_channel": 1, "prebiddealpriority": 1}`),
+							MType:   openrtb2.MarkupBanner,
+						},
+						BidType: openrtb_ext.BidTypeBanner,
+					},
+				},
+				Currency: "USD",
+			},
+		},
+		{
+			name: "ignore_invalid_prebiddealpriority",
+			args: args{
+				response: &adapters.ResponseData{
+					StatusCode: http.StatusOK,
+					Body:       []byte(`{"id": "test-request-id", "seatbid":[{"seat": "958", "bid":[{"mtype": 2, "id": "7706636740145184841", "impid": "test-imp-id", "price": 0.500000, "adid": "29681110", "adm": "some-test-ad", "adomain":["roundhouseads.com"], "crid": "29681110", "h": 250, "w": 300, "dealid": "testdeal", "ext":{"dspid": 6, "deal_channel": 1, "prebiddealpriority": -1}}]}], "bidid": "5778926625248726496", "cur": "USD"}`),
+				},
+			},
+			wantErr: nil,
+			wantResp: &adapters.BidderResponse{
+				Bids: []*adapters.TypedBid{
+					{
+						Bid: &openrtb2.Bid{
+							ID:      "7706636740145184841",
+							ImpID:   "test-imp-id",
+							Price:   0.500000,
+							AdID:    "29681110",
+							AdM:     "some-test-ad",
+							ADomain: []string{"roundhouseads.com"},
+							CrID:    "29681110",
+							H:       250,
+							W:       300,
+							DealID:  "testdeal",
+							Ext:     json.RawMessage(`{"dspid": 6, "deal_channel": 1, "prebiddealpriority": -1}`),
+							MType:   openrtb2.MarkupVideo,
+						},
+						BidType: openrtb_ext.BidTypeVideo,
+					},
+				},
+				Currency: "USD",
+			},
+		},
+		{
+			name: "no_content_response",
+			args: args{
+				response: &adapters.ResponseData{
+					StatusCode: http.StatusNoContent,
+					Body:       nil,
+				},
+			},
+			wantErr:  nil,
+			wantResp: adapters.NewBidderResponse(),
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			a := &adapter{
+				bidderEndpoint: tt.fields.URI,
+			}
+			gotResp, gotErr := a.MakeBids(tt.args.internalRequest, tt.args.externalRequest, tt.args.response)
+			assert.Equal(t, tt.wantErr, gotErr, gotErr)
+			assert.Equal(t, tt.wantResp, gotResp)
+		})
+	}
+}
diff --git a/adapters/roundhouseads/roundhouseadstest/exemplary/simple-banner-inapp.json b/adapters/roundhouseads/roundhouseadstest/exemplary/simple-banner-inapp.json
new file mode 100644
index 0000000000..026f437695
--- /dev/null
+++ b/adapters/roundhouseads/roundhouseadstest/exemplary/simple-banner-inapp.json
@@ -0,0 +1,143 @@
+{
+  "mockBidRequest": {
+    "id": "test-request-id",
+    "app": {
+      "bundle": "test.app.bundle",
+      "publisher": {
+        "id": "this_id_will_be_replaced"
+      }
+    },
+    "device": {
+      "ifa": "test-ifa-123456",
+      "os": "android",
+      "ip": "91.199.242.236",
+      "ua": "random user agent"
+    },
+    "imp": [
+      {
+        "id": "test-imp-id",
+        "banner": {
+          "format": [
+            {
+              "w": 300,
+              "h": 250
+            }
+          ],
+          "w": 100,
+          "h": 150
+        },
+        "ext": {
+          "bidder": {
+            "publisherId": "123456"
+          }
+        }
+      }
+    ]
+  },
+  "httpCalls": [
+    {
+      "expectedRequest": {
+        "uri": "https://roundhouseads.com/openrtb2",
+        "headers": {
+          "Content-Type": [
+            "application/json;charset=utf-8"
+          ],
+          "Accept": [
+            "application/json"
+          ],
+          "X-Integration-Type": ["1"]
+        },
+        "body": {
+          "id": "test-request-id",
+          "app": {
+            "bundle": "test.app.bundle",
+            "publisher": {
+              "id": "123456"
+            }
+          },
+          "device": {
+            "ifa": "test-ifa-123456",
+            "os": "android",
+            "ip": "91.199.242.236",
+            "ua": "random user agent"
+          },
+          "imp": [
+            {
+              "id": "test-imp-id",
+              "banner": {
+                "format": [
+                  {
+                    "w": 300,
+                    "h": 250
+                  }
+                ],
+                "w": 300,
+                "h": 250
+              },
+              "ext": {
+                "bidder": {
+                  "publisherId": "123456"
+                }
+              }
+            }
+          ]
+        },
+        "impIDs": ["test-imp-id"]
+      },
+      "mockResponse": {
+        "status": 200,
+        "body": {
+          "currency": "USD",
+          "seatbid": [
+            {
+              "bid": [
+                {
+                  "id": "test-slot-id",
+                  "impid": "test-imp-id",
+                  "price": 0.1,
+                  "crid": "creative-123",
+                  "adm": "<iframe id='789abc' name='789abc' src='http://creative-url.roundhouseads.com'></iframe>",
+                  "w": 300,
+                  "h": 250,
+                  "ext": {
+                    "prebid": {
+                      "type": "banner",
+                      "networkName": "Roundhouseads"
+                    }
+                  },
+                  "mtype": 1
+                }
+              ]
+            }
+          ]
+        }
+      }
+    }
+  ],
+  "expectedBidResponses": [
+    {
+      "currency": "USD",
+      "bids": [
+        {
+          "bid": {
+            "id": "test-slot-id",
+            "impid": "test-imp-id",
+            "price": 0.1,
+            "crid": "creative-123",
+            "adm": "<iframe id='789abc' name='789abc' src='http://creative-url.roundhouseads.com'></iframe>",
+            "w": 300,
+            "h": 250,
+            "ext": {
+              "prebid": {
+                "type": "banner",
+                "networkName": "Roundhouseads"
+              }
+            },
+            "mtype": 1
+          },
+          "type": "banner"
+        }
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/adapters/roundhouseads/roundhouseadstest/exemplary/simple-banner-multiple-bids-and-formats.json b/adapters/roundhouseads/roundhouseadstest/exemplary/simple-banner-multiple-bids-and-formats.json
new file mode 100644
index 0000000000..ea81f950ce
--- /dev/null
+++ b/adapters/roundhouseads/roundhouseadstest/exemplary/simple-banner-multiple-bids-and-formats.json
@@ -0,0 +1,230 @@
+{
+  "mockBidRequest": {
+    "id": "test-request-id-multiple-bids",
+    "site": {
+      "id": "site-id",
+      "page": "roundhouseads.com",
+      "publisher": {
+        "id": "123456"
+      }
+    },
+    "device": {
+      "os": "android",
+      "ip": "91.199.242.236",
+      "ua": "random user agent"
+    },
+    "imp": [
+      {
+        "id": "test-imp-id",
+        "banner": {
+          "format": [
+            {
+              "w": 300,
+              "h": 250
+            },
+            {
+              "w": 500,
+              "h": 300
+            }
+          ],
+          "w": 55,
+          "h": 33
+        },
+        "ext": {
+          "bidder": {
+            "publisherId": "123456"
+          }
+        }
+      },
+      {
+        "id": "test-imp-id2",
+        "banner": {
+          "format": [
+            {
+              "w": 900,
+              "h": 450
+            },
+            {
+              "w": 500,
+              "h": 300
+            }
+          ],
+          "w": 88,
+          "h": 99
+        },
+        "ext": {
+          "bidder": {
+            "publisherId": "123456"
+          }
+        }
+      }
+    ]
+  },
+  "httpCalls": [
+    {
+      "expectedRequest": {
+        "uri": "https://roundhouseads.com/openrtb2",
+        "headers": {
+          "Content-Type": [
+            "application/json;charset=utf-8"
+          ],
+          "Accept": [
+            "application/json"
+          ],
+          "X-Integration-Type": ["1"]
+        },
+        "body": {
+          "id": "test-request-id-multiple-bids",
+          "site": {
+            "id": "site-id",
+            "page": "roundhouseads.com",
+            "publisher": {
+              "id": "123456"
+            }
+          },
+          "device": {
+            "os": "android",
+            "ip": "91.199.242.236",
+            "ua": "random user agent"
+          },
+          "imp": [
+            {
+              "id": "test-imp-id",
+              "banner": {
+                "format": [
+                  {
+                    "w": 300,
+                    "h": 250
+                  },
+                  {
+                    "w": 500,
+                    "h": 300
+                  }
+                ],
+                "w": 300,
+                "h": 250
+              },
+              "ext": {
+                "bidder": {
+                  "publisherId": "123456"
+                }
+              }
+            },
+            {
+              "id": "test-imp-id2",
+              "banner": {
+                "format": [
+                  {
+                    "w": 900,
+                    "h": 450
+                  },
+                  {
+                    "w": 500,
+                    "h": 300
+                  }
+                ],
+                "w": 900,
+                "h": 450
+              },
+              "ext": {
+                "bidder": {
+                  "publisherId": "123456"
+                }
+              }
+            }
+          ]
+        },
+        "impIDs": ["test-imp-id", "test-imp-id2"]
+      },
+      "mockResponse": {
+        "status": 200,
+        "body": {
+          "currency": "USD",
+          "seatbid": [
+            {
+              "bid": [
+                {
+                  "id": "test-slot-id",
+                  "impid": "test-imp-id",
+                  "price": 0.1,
+                  "crid": "creative-123",
+                  "adm": "<iframe id='789abc' name='789abc' src='http://creative-url.roundhouseads.com'></iframe>",
+                  "w": 300,
+                  "h": 250,
+                  "ext": {
+                    "prebid": {
+                      "type": "banner"
+                    }
+                  },
+                  "mtype": 1
+                }
+              ]
+            },
+            {
+              "bid": [
+                {
+                  "id": "test-slot-id2",
+                  "impid": "test-imp-id2",
+                  "price": 0.5,
+                  "crid": "creative-123",
+                  "adm": "<iframe id='789abc' name='789abc' src='http://creative-url.roundhouseads.com'></iframe>",
+                  "w": 900,
+                  "h": 450,
+                  "ext": {
+                    "prebid": {
+                      "type": "banner"
+                    }
+                  },
+                  "mtype": 1
+                }
+              ]
+            }
+          ]
+        }
+      }
+    }
+  ],
+  "expectedBidResponses": [
+    {
+      "currency": "USD",
+      "bids": [
+        {
+          "bid": {
+            "id": "test-slot-id",
+            "impid": "test-imp-id",
+            "price": 0.1,
+            "crid": "creative-123",
+            "adm": "<iframe id='789abc' name='789abc' src='http://creative-url.roundhouseads.com'></iframe>",
+            "w": 300,
+            "h": 250,
+            "ext": {
+              "prebid": {
+                "type": "banner"
+              }
+            },
+            "mtype": 1
+          },
+          "type": "banner"
+        },
+        {
+          "bid": {
+            "id": "test-slot-id2",
+            "impid": "test-imp-id2",
+            "price": 0.5,
+            "crid": "creative-123",
+            "adm": "<iframe id='789abc' name='789abc' src='http://creative-url.roundhouseads.com'></iframe>",
+            "w": 900,
+            "h": 450,
+            "ext": {
+              "prebid": {
+                "type": "banner"
+              }
+            },
+            "mtype": 1
+          },
+          "type": "banner"
+        }
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/adapters/roundhouseads/roundhouseadstest/exemplary/simple-banner-multiple-bids.json b/adapters/roundhouseads/roundhouseadstest/exemplary/simple-banner-multiple-bids.json
new file mode 100644
index 0000000000..562fa18d9f
--- /dev/null
+++ b/adapters/roundhouseads/roundhouseadstest/exemplary/simple-banner-multiple-bids.json
@@ -0,0 +1,214 @@
+{
+  "mockBidRequest": {
+    "id": "test-request-id-multiple-bids",
+    "site": {
+      "id": "site-id",
+      "page": "roundhouseads.com",
+      "publisher": {
+        "id": "123456"
+      }
+    },
+    "device": {
+      "os": "android",
+      "ip": "91.199.242.236",
+      "ua": "random user agent"
+    },
+    "imp": [
+      {
+        "id": "test-imp-id",
+        "banner": {
+          "format": [
+            {
+              "w": 300,
+              "h": 250
+            }
+          ],
+          "w": 300,
+          "h": 250
+        },
+        "ext": {
+          "bidder": {
+            "publisherId": "123456"
+          }
+        }
+      },
+      {
+        "id": "test-imp-id2",
+        "banner": {
+          "format": [
+            {
+              "w": 300,
+              "h": 250
+            }
+          ],
+          "w": 300,
+          "h": 250
+        },
+        "ext": {
+          "bidder": {
+            "publisherId": "123456"
+          }
+        }
+      }
+    ]
+  },
+  "httpCalls": [
+    {
+      "expectedRequest": {
+        "uri": "https://roundhouseads.com/openrtb2",
+        "headers": {
+          "Content-Type": [
+            "application/json;charset=utf-8"
+          ],
+          "Accept": [
+            "application/json"
+          ],
+          "X-Integration-Type": ["1"]
+        },
+        "body": {
+          "id": "test-request-id-multiple-bids",
+          "site": {
+            "id": "site-id",
+            "page": "roundhouseads.com",
+            "publisher": {
+              "id": "123456"
+            }
+          },
+          "device": {
+            "os": "android",
+            "ip": "91.199.242.236",
+            "ua": "random user agent"
+          },
+          "imp": [
+            {
+              "id": "test-imp-id",
+              "banner": {
+                "format": [
+                  {
+                    "w": 300,
+                    "h": 250
+                  }
+                ],
+                "w": 300,
+                "h": 250
+              },
+              "ext": {
+                "bidder": {
+                  "publisherId": "123456"
+                }
+              }
+            },
+            {
+              "id": "test-imp-id2",
+              "banner": {
+                "format": [
+                  {
+                    "w": 300,
+                    "h": 250
+                  }
+                ],
+                "w": 300,
+                "h": 250
+              },
+              "ext": {
+                "bidder": {
+                  "publisherId": "123456"
+                }
+              }
+            }
+          ]
+        },
+        "impIDs": ["test-imp-id", "test-imp-id2"]
+      },
+      "mockResponse": {
+        "status": 200,
+        "body": {
+          "currency": "USD",
+          "seatbid": [
+            {
+              "bid": [
+                {
+                  "id": "test-slot-id",
+                  "impid": "test-imp-id",
+                  "price": 0.1,
+                  "crid": "creative-123",
+                  "adm": "<iframe id='789abc' name='789abc' src='http://creative-url.roundhouseads.com'></iframe>",
+                  "w": 300,
+                  "h": 250,
+                  "ext": {
+                    "prebid": {
+                      "type": "banner"
+                    }
+                  },
+                  "mtype": 1
+                }
+              ]
+            },
+            {
+              "bid": [
+                {
+                  "id": "test-slot-id2",
+                  "impid": "test-imp-id2",
+                  "price": 0.5,
+                  "crid": "creative-123",
+                  "adm": "<iframe id='789abc' name='789abc' src='http://creative-url.roundhouseads.com'></iframe>",
+                  "w": 300,
+                  "h": 250,
+                  "ext": {
+                    "prebid": {
+                      "type": "banner"
+                    }
+                  },
+                  "mtype": 1
+                }
+              ]
+            }
+          ]
+        }
+      }
+    }
+  ],
+  "expectedBidResponses": [
+    {
+      "currency": "USD",
+      "bids": [
+        {
+          "bid": {
+            "id": "test-slot-id",
+            "impid": "test-imp-id",
+            "price": 0.1,
+            "crid": "creative-123",
+            "adm": "<iframe id='789abc' name='789abc' src='http://creative-url.roundhouseads.com'></iframe>",
+            "w": 300,
+            "h": 250,
+            "ext": {
+              "prebid": {
+                "type": "banner"
+              }
+            },
+            "mtype": 1
+          },
+          "type": "banner"
+        },
+        {
+          "bid": {
+            "id": "test-slot-id2",
+            "impid": "test-imp-id2",
+            "price": 0.5,
+            "crid": "creative-123",
+            "adm": "<iframe id='789abc' name='789abc' src='http://creative-url.roundhouseads.com'></iframe>",
+            "w": 300,
+            "h": 250,
+            "ext": {
+              "prebid": {
+                "type": "banner"
+              }
+            },
+            "mtype": 1
+          },
+          "type": "banner"
+        }
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/adapters/roundhouseads/roundhouseadstest/exemplary/simple-banner.json b/adapters/roundhouseads/roundhouseadstest/exemplary/simple-banner.json
new file mode 100644
index 0000000000..da68ded315
--- /dev/null
+++ b/adapters/roundhouseads/roundhouseadstest/exemplary/simple-banner.json
@@ -0,0 +1,141 @@
+{
+  "mockBidRequest": {
+    "id": "test-request-id",
+    "site": {
+      "id": "site-id",
+      "page": "roundhouseads.com",
+      "publisher": {
+        "id": "123456"
+      }
+    },
+    "device": {
+      "os": "android",
+      "ip": "91.199.242.236",
+      "ua": "random user agent"
+    },
+    "imp": [
+      {
+        "id": "test-imp-id",
+        "banner": {
+          "format": [
+            {
+              "w": 300,
+              "h": 250
+            }
+          ],
+          "w": 100,
+          "h": 150
+        },
+        "ext": {
+          "bidder": {
+            "publisherId": "123456"
+          }
+        }
+      }
+    ]
+  },
+  "httpCalls": [
+    {
+      "expectedRequest": {
+        "uri": "https://roundhouseads.com/openrtb2",
+        "headers": {
+          "Content-Type": [
+            "application/json;charset=utf-8"
+          ],
+          "Accept": [
+            "application/json"
+          ],
+          "X-Integration-Type": ["1"]
+        },
+        "body": {
+          "id": "test-request-id",
+          "site": {
+            "id": "site-id",
+            "page": "roundhouseads.com",
+            "publisher": {
+              "id": "123456"
+            }
+          },
+          "device": {
+            "os": "android",
+            "ip": "91.199.242.236",
+            "ua": "random user agent"
+          },
+          "imp": [
+            {
+              "id": "test-imp-id",
+              "banner": {
+                "format": [
+                  {
+                    "w": 300,
+                    "h": 250
+                  }
+                ],
+                "w": 300,
+                "h": 250
+              },
+              "ext": {
+                "bidder": {
+                  "publisherId": "123456"
+                }
+              }
+            }
+          ]
+        },
+        "impIDs": ["test-imp-id"]
+      },
+      "mockResponse": {
+        "status": 200,
+        "body": {
+          "currency": "USD",
+          "seatbid": [
+            {
+              "bid": [
+                {
+                  "id": "test-slot-id",
+                  "impid": "test-imp-id",
+                  "price": 0.1,
+                  "crid": "creative-123",
+                  "adm": "<iframe id='789abc' name='789abc' src='http://creative-url.roundhouseads.com'></iframe>",
+                  "w": 300,
+                  "h": 250,
+                  "ext": {
+                    "prebid": {
+                      "type": "banner"
+                    }
+                  },
+                  "mtype": 1
+                }
+              ]
+            }
+          ]
+        }
+      }
+    }
+  ],
+  "expectedBidResponses": [
+    {
+      "currency": "USD",
+      "bids": [
+        {
+          "bid": {
+            "id": "test-slot-id",
+            "impid": "test-imp-id",
+            "price": 0.1,
+            "crid": "creative-123",
+            "adm": "<iframe id='789abc' name='789abc' src='http://creative-url.roundhouseads.com'></iframe>",
+            "w": 300,
+            "h": 250,
+            "ext": {
+              "prebid": {
+                "type": "banner"
+              }
+            },
+            "mtype": 1
+          },
+          "type": "banner"
+        }
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/adapters/roundhouseads/roundhouseadstest/exemplary/simple-empty-publisherId.json b/adapters/roundhouseads/roundhouseadstest/exemplary/simple-empty-publisherId.json
new file mode 100644
index 0000000000..62033c70d2
--- /dev/null
+++ b/adapters/roundhouseads/roundhouseadstest/exemplary/simple-empty-publisherId.json
@@ -0,0 +1,141 @@
+{
+  "mockBidRequest": {
+    "id": "test-request-id",
+    "site": {
+      "id": "site-id",
+      "page": "roundhouseads.com",
+      "publisher": {
+        "id": "did_not_override"
+      }
+    },
+    "device": {
+      "os": "android",
+      "ip": "91.199.242.236",
+      "ua": "random user agent"
+    },
+    "imp": [
+      {
+        "id": "test-imp-id",
+        "banner": {
+          "format": [
+            {
+              "w": 300,
+              "h": 250
+            }
+          ],
+          "w": 300,
+          "h": 250
+        },
+        "ext": {
+          "bidder": {
+            "publisherId": ""
+          }
+        }
+      }
+    ]
+  },
+  "httpCalls": [
+    {
+      "expectedRequest": {
+        "uri": "https://roundhouseads.com/openrtb2",
+        "headers": {
+          "Content-Type": [
+            "application/json;charset=utf-8"
+          ],
+          "Accept": [
+            "application/json"
+          ],
+          "X-Integration-Type": ["1"]
+        },
+        "body": {
+          "id": "test-request-id",
+          "site": {
+            "id": "site-id",
+            "page": "roundhouseads.com",
+            "publisher": {
+              "id": "did_not_override"
+            }
+          },
+          "device": {
+            "os": "android",
+            "ip": "91.199.242.236",
+            "ua": "random user agent"
+          },
+          "imp": [
+            {
+              "id": "test-imp-id",
+              "banner": {
+                "format": [
+                  {
+                    "w": 300,
+                    "h": 250
+                  }
+                ],
+                "w": 300,
+                "h": 250
+              },
+              "ext": {
+                "bidder": {
+                  "publisherId": ""
+                }
+              }
+            }
+          ]
+        },
+        "impIDs": ["test-imp-id"]
+      },
+      "mockResponse": {
+        "status": 200,
+        "body": {
+          "currency": "USD",
+          "seatbid": [
+            {
+              "bid": [
+                {
+                  "id": "test-slot-id",
+                  "impid": "test-imp-id",
+                  "price": 0.1,
+                  "crid": "creative-123",
+                  "adm": "<iframe id='789abc' name='789abc' src='http://creative-url.roundhouseads.com'></iframe>",
+                  "w": 300,
+                  "h": 250,
+                  "ext": {
+                    "prebid": {
+                      "type": "banner"
+                    }
+                  },
+                  "mtype": 1
+                }
+              ]
+            }
+          ]
+        }
+      }
+    }
+  ],
+  "expectedBidResponses": [
+    {
+      "currency": "USD",
+      "bids": [
+        {
+          "bid": {
+            "id": "test-slot-id",
+            "impid": "test-imp-id",
+            "price": 0.1,
+            "crid": "creative-123",
+            "adm": "<iframe id='789abc' name='789abc' src='http://creative-url.roundhouseads.com'></iframe>",
+            "w": 300,
+            "h": 250,
+            "ext": {
+              "prebid": {
+                "type": "banner"
+              }
+            },
+            "mtype": 1
+          },
+          "type": "banner"
+        }
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/adapters/roundhouseads/roundhouseadstest/exemplary/simple-multi-type-banner.json b/adapters/roundhouseads/roundhouseadstest/exemplary/simple-multi-type-banner.json
new file mode 100644
index 0000000000..952dc37b85
--- /dev/null
+++ b/adapters/roundhouseads/roundhouseadstest/exemplary/simple-multi-type-banner.json
@@ -0,0 +1,150 @@
+{
+  "mockBidRequest": {
+    "id": "test-request-id",
+    "site": {
+      "id": "site-id",
+      "page": "roundhouseads.com"
+    },
+    "device": {
+      "os": "android",
+      "ip": "91.199.242.236",
+      "ua": "random user agent"
+    },
+    "imp": [
+      {
+        "id": "test-imp-id",
+        "video": {
+          "mimes": ["video/mp4"],
+          "protocols": [2, 5],
+          "w": 300,
+          "h": 250
+        },
+        "banner": {
+          "format": [
+            {
+              "w": 300,
+              "h": 250
+            }
+          ],
+          "w": 300,
+          "h": 250
+        },
+        "ext": {
+          "bidder": {
+            "publisherId": "123456"
+          }
+        }
+      }
+    ]
+  },
+  "httpCalls": [
+    {
+      "expectedRequest": {
+        "uri": "https://roundhouseads.com/openrtb2",
+        "headers": {
+          "Content-Type": [
+            "application/json;charset=utf-8"
+          ],
+          "Accept": [
+            "application/json"
+          ],
+          "X-Integration-Type": ["1"]
+        },
+        "body": {
+          "id": "test-request-id",
+          "site": {
+            "id": "site-id",
+            "page": "roundhouseads.com",
+            "publisher": {
+              "id": "123456"
+            }
+          },
+          "device": {
+            "os": "android",
+            "ip": "91.199.242.236",
+            "ua": "random user agent"
+          },
+          "imp": [
+            {
+              "id": "test-imp-id",
+              "video": {
+                "mimes": ["video/mp4"],
+                "protocols": [2, 5],
+                "w": 300,
+                "h": 250
+              },
+              "banner": {
+                "format": [
+                  {
+                    "w": 300,
+                    "h": 250
+                  }
+                ],
+                "w": 300,
+                "h": 250
+              },
+              "ext": {
+                "bidder": {
+                  "publisherId": "123456"
+                }
+              }
+            }
+          ]
+        },
+        "impIDs": ["test-imp-id"]
+      },
+      "mockResponse": {
+        "status": 200,
+        "body": {
+          "currency": "USD",
+          "seatbid": [
+            {
+              "bid": [
+                {
+                  "id": "test-slot-id",
+                  "impid": "test-imp-id",
+                  "price": 0.1,
+                  "crid": "creative-123",
+                  "adm": "<iframe id='789abc' name='789abc' src='http://creative-url.roundhouseads.com'></iframe>",
+                  "h": 250,
+                  "w": 300,
+                  "ext": {
+                    "prebid": {
+                      "type": "banner"
+                    }
+                  },
+                  "mtype": 1
+                }
+              ]
+            }
+          ]
+        }
+      }
+    }
+  ],
+  "expectedBidResponses": [
+    {
+      "currency": "USD",
+      "bids": [
+        {
+          "bid": {
+            "id": "test-slot-id",
+            "impid": "test-imp-id",
+            "price": 0.1,
+            "crid": "creative-123",
+            "adm": "<iframe id='789abc' name='789abc' src='http://creative-url.roundhouseads.com'></iframe>",
+            "h": 250,
+            "w": 300,
+            "ext": {
+              "prebid": {
+                "type": "banner"
+              }
+            },
+            "mtype": 1
+          },
+          "type": "banner"
+        }
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/adapters/roundhouseads/roundhouseadstest/exemplary/simple-multi-type-video.json b/adapters/roundhouseads/roundhouseadstest/exemplary/simple-multi-type-video.json
new file mode 100644
index 0000000000..42bca566f9
--- /dev/null
+++ b/adapters/roundhouseads/roundhouseadstest/exemplary/simple-multi-type-video.json
@@ -0,0 +1,150 @@
+{
+  "mockBidRequest": {
+    "id": "test-request-id",
+    "site": {
+      "id": "site-id",
+      "page": "roundhouseads.com"
+    },
+    "device": {
+      "os": "android",
+      "ip": "91.199.242.236",
+      "ua": "random user agent"
+    },
+    "imp": [
+      {
+        "id": "test-imp-id",
+        "video": {
+          "mimes": ["video/mp4"],
+          "protocols": [2, 5],
+          "w": 300,
+          "h": 250
+        },
+        "banner": {
+          "format": [
+            {
+              "w": 300,
+              "h": 250
+            }
+          ],
+          "w": 300,
+          "h": 250
+        },
+        "ext": {
+          "bidder": {
+            "publisherId": "123456"
+          }
+        }
+      }
+    ]
+  },
+  "httpCalls": [
+    {
+      "expectedRequest": {
+        "uri": "https://roundhouseads.com/openrtb2",
+        "headers": {
+          "Content-Type": [
+            "application/json;charset=utf-8"
+          ],
+          "Accept": [
+            "application/json"
+          ],
+          "X-Integration-Type": ["1"]
+        },
+        "body": {
+          "id": "test-request-id",
+          "site": {
+            "id": "site-id",
+            "page": "roundhouseads.com",
+            "publisher": {
+              "id": "123456"
+            }
+          },
+          "device": {
+            "os": "android",
+            "ip": "91.199.242.236",
+            "ua": "random user agent"
+          },
+          "imp": [
+            {
+              "id": "test-imp-id",
+              "video": {
+                "mimes": ["video/mp4"],
+                "protocols": [2, 5],
+                "w": 300,
+                "h": 250
+              },
+              "banner": {
+                "format": [
+                  {
+                    "w": 300,
+                    "h": 250
+                  }
+                ],
+                "w": 300,
+                "h": 250
+              },
+              "ext": {
+                "bidder": {
+                  "publisherId": "123456"
+                }
+              }
+            }
+          ]
+        },
+        "impIDs": ["test-imp-id"]
+      },
+      "mockResponse": {
+        "status": 200,
+        "body": {
+          "currency": "USD",
+          "seatbid": [
+            {
+              "bid": [
+                {
+                  "id": "test-slot-id",
+                  "impid": "test-imp-id",
+                  "price": 0.1,
+                  "crid": "creative-123",
+                  "adm": "some-test-ad-vast",
+                  "h": 250,
+                  "w": 300,
+                  "ext": {
+                    "prebid": {
+                      "type": "video"
+                    }
+                  },
+                  "mtype": 2
+                }
+              ]
+            }
+          ]
+        }
+      }
+    }
+  ],
+  "expectedBidResponses": [
+    {
+      "currency": "USD",
+      "bids": [
+        {
+          "bid": {
+            "id": "test-slot-id",
+            "impid": "test-imp-id",
+            "price": 0.1,
+            "crid": "creative-123",
+            "adm": "some-test-ad-vast",
+            "h": 250,
+            "w": 300,
+            "ext": {
+              "prebid": {
+                "type": "video"
+              }
+            },
+            "mtype": 2
+          },
+          "type": "video"
+        }
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/adapters/roundhouseads/roundhouseadstest/exemplary/simple-native.json b/adapters/roundhouseads/roundhouseadstest/exemplary/simple-native.json
new file mode 100644
index 0000000000..dc5f2f4b8d
--- /dev/null
+++ b/adapters/roundhouseads/roundhouseadstest/exemplary/simple-native.json
@@ -0,0 +1,114 @@
+{
+  "mockBidRequest": {
+    "id": "test-request-id",
+    "site": {
+      "id": "site-id",
+      "page": "roundhouseads.com"
+    },
+    "imp": [
+      {
+        "id": "test-imp-id",
+        "native": {
+          "request": ""
+        },
+        "ext": {
+          "bidder": {
+            "publisherId": "123456"
+          }
+        }
+      }
+    ]
+  },
+  "httpCalls": [
+    {
+      "expectedRequest": {
+        "uri": "https://roundhouseads.com/openrtb2",
+        "headers": {
+          "Content-Type": [
+            "application/json;charset=utf-8"
+          ],
+          "Accept": [
+            "application/json"
+          ],
+          "X-Integration-Type": ["1"]
+        },
+        "body": {
+          "id": "test-request-id",
+          "site": {
+            "id": "site-id",
+            "page": "roundhouseads.com",
+            "publisher": {
+              "id": "123456"
+            }
+          },
+          "imp": [
+            {
+              "id": "test-imp-id",
+              "native": {
+                "request": ""
+              },
+              "ext": {
+                "bidder": {
+                  "publisherId": "123456"
+                }
+              }
+            }
+          ]
+        },
+        "impIDs": ["test-imp-id"]
+      },
+      "mockResponse": {
+        "status": 200,
+        "body": {
+          "currency": "USD",
+          "seatbid": [
+            {
+              "bid": [
+                {
+                  "id": "test-slot-id",
+                  "impid": "test-imp-id",
+                  "price": 0.1,
+                  "crid": "creative-123",
+                  "adm": "<iframe id='789abc' name='789abc' src='http://creative-url.roundhouseads.com'></iframe>",
+                  "h": 250,
+                  "w": 300,
+                  "ext": {
+                    "prebid": {
+                      "type": "native"
+                    }
+                  },
+                  "mtype": 4
+                }
+              ]
+            }
+          ]
+        }
+      }
+    }
+  ],
+  "expectedBidResponses": [
+    {
+      "currency": "USD",
+      "bids": [
+        {
+          "bid": {
+            "id": "test-slot-id",
+            "impid": "test-imp-id",
+            "price": 0.1,
+            "crid": "creative-123",
+            "adm": "<iframe id='789abc' name='789abc' src='http://creative-url.roundhouseads.com'></iframe>",
+            "h": 250,
+            "w": 300,
+            "ext": {
+              "prebid": {
+                "type": "native"
+              }
+            },
+            "mtype": 4
+          },
+          "type": "native"
+        }
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/adapters/roundhouseads/roundhouseadstest/exemplary/simple-video.json b/adapters/roundhouseads/roundhouseadstest/exemplary/simple-video.json
new file mode 100644
index 0000000000..f50d72aac2
--- /dev/null
+++ b/adapters/roundhouseads/roundhouseadstest/exemplary/simple-video.json
@@ -0,0 +1,153 @@
+{
+  "mockBidRequest": {
+    "id": "test-request-id",
+    "site": {
+      "id": "site-id",
+      "page": "roundhouseads.com"
+    },
+    "device": {
+      "os": "android",
+      "ip": "91.199.242.236",
+      "ua": "random user agent"
+    },
+    "imp": [
+      {
+        "id": "test-imp-id",
+        "tagid": "pbs-local/preroll",
+        "video": {
+          "minduration": 0,
+          "maxduration": 60,
+          "api": [1, 2],
+          "mimes": [
+            "video/mp4",
+            "video/webm",
+            "application/javascript"
+          ],
+          "placement": 1,
+          "protocols": [2, 3, 4, 5, 6],
+          "w": 300,
+          "h": 250,
+          "playbackmethod": [1, 2, 3, 4, 5, 6],
+          "plcmt": 1,
+          "skip": 1
+        },
+        "ext": {
+          "bidder": {
+            "publisherId": "123456"
+          }
+        }
+      }
+    ]
+  },
+  "httpCalls": [
+    {
+      "expectedRequest": {
+        "uri": "https://roundhouseads.com/openrtb2",
+        "headers": {
+          "Content-Type": [
+            "application/json;charset=utf-8"
+          ],
+          "Accept": [
+            "application/json"
+          ],
+          "X-Integration-Type": ["1"]
+        },
+        "body": {
+          "id": "test-request-id",
+          "site": {
+            "id": "site-id",
+            "page": "roundhouseads.com",
+            "publisher": {
+              "id": "123456"
+            }
+          },
+          "device": {
+            "os": "android",
+            "ip": "91.199.242.236",
+            "ua": "random user agent"
+          },
+          "imp": [
+            {
+              "id": "test-imp-id",
+              "tagid": "pbs-local/preroll",
+              "video": {
+                "maxduration": 60,
+                "api": [1, 2],
+                "mimes": [
+                  "video/mp4",
+                  "video/webm",
+                  "application/javascript"
+                ],
+                "placement": 1,
+                "protocols": [2, 3, 4, 5, 6],
+                "w": 300,
+                "h": 250,
+                "playbackmethod": [1, 2, 3, 4, 5, 6],
+                "plcmt": 1,
+                "skip": 1
+              },
+              "ext": {
+                "bidder": {
+                  "publisherId": "123456"
+                }
+              }
+            }
+          ]
+        },
+        "impIDs": ["test-imp-id"]
+      },
+      "mockResponse": {
+        "status": 200,
+        "body": {
+          "currency": "USD",
+          "seatbid": [
+            {
+              "bid": [
+                {
+                  "id": "test-slot-id",
+                  "impid": "test-imp-id",
+                  "price": 0.1,
+                  "crid": "creative-123",
+                  "adm": "some-test-ad-vast",
+                  "h": 250,
+                  "w": 300,
+                  "ext": {
+                    "prebid": {
+                      "type": "video"
+                    }
+                  },
+                  "mtype": 2
+                }
+              ]
+            }
+          ]
+        }
+      }
+    }
+  ],
+  "expectedBidResponses": [
+    {
+      "currency": "USD",
+      "bids": [
+        {
+          "bid": {
+            "id": "test-slot-id",
+            "impid": "test-imp-id",
+            "price": 0.1,
+            "crid": "creative-123",
+            "adm": "some-test-ad-vast",
+            "h": 250,
+            "w": 300,
+            "ext": {
+              "prebid": {
+                "type": "video"
+              }
+            },
+            "mtype": 2
+          },
+          "type": "video"
+        }
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/adapters/roundhouseads/roundhouseadstest/supplemental/200-response-from-target.json b/adapters/roundhouseads/roundhouseadstest/supplemental/200-response-from-target.json
new file mode 100644
index 0000000000..6f473a06e2
--- /dev/null
+++ b/adapters/roundhouseads/roundhouseadstest/supplemental/200-response-from-target.json
@@ -0,0 +1,105 @@
+{
+    "mockBidRequest": {
+      "id": "test-request-id",
+      "app": {
+        "bundle": "test.app.bundle"
+      },
+      "device": {
+        "ifa": "test-ifa-123456",
+        "ip": "91.199.242.236",
+        "ua": "random user agent",
+        "os": "android"
+      },
+      "regs": {
+        "ext": {
+          "us_privacy": "1YYY"
+        }
+      },
+      "imp": [
+        {
+          "id": "test-imp-id",
+          "banner": {
+            "format": [
+              {
+                "w": 300,
+                "h": 250
+              }
+            ],
+            "w": 300,
+            "h": 250
+          },
+          "ext": {
+            "bidder": {
+              "publisherId": "123456"
+            }
+          }
+        }
+      ]
+    },
+    "httpCalls": [
+      {
+        "expectedRequest": {
+          "uri": "https://roundhouseads.com/openrtb2",
+          "headers": {
+            "Content-Type": [
+              "application/json;charset=utf-8"
+            ],
+            "Accept": [
+              "application/json"
+            ],
+            "X-Integration-Type": ["1"]
+          },
+          "body": {
+            "id": "test-request-id",
+            "app": {
+              "bundle": "test.app.bundle",
+              "publisher": {
+                "id": "123456"
+              }
+            },
+            "device": {
+              "ifa": "test-ifa-123456",
+              "ip": "91.199.242.236",
+              "ua": "random user agent",
+              "os": "android"
+            },
+            "regs": {
+              "ext": {
+                "us_privacy": "1YYY"
+              }
+            },
+            "imp": [
+              {
+                "id": "test-imp-id",
+                "banner": {
+                  "format": [
+                    {
+                      "w": 300,
+                      "h": 250
+                    }
+                  ],
+                  "w": 300,
+                  "h": 250
+                },
+                "ext": {
+                  "bidder": {
+                    "publisherId": "123456"
+                  }
+                }
+              }
+            ]
+          },
+          "impIDs": ["test-imp-id"]
+        },
+        "mockResponse": {
+          "status": 200
+        }
+      }
+    ],
+    "expectedMakeBidsErrors": [
+      {
+        "value": "unexpected end of JSON input",
+        "comparison": "literal"
+      }
+    ]
+  }
\ No newline at end of file
diff --git a/adapters/roundhouseads/roundhouseadstest/supplemental/204-response-from-target.json b/adapters/roundhouseads/roundhouseadstest/supplemental/204-response-from-target.json
new file mode 100644
index 0000000000..1f5d2c6513
--- /dev/null
+++ b/adapters/roundhouseads/roundhouseadstest/supplemental/204-response-from-target.json
@@ -0,0 +1,105 @@
+{
+    "mockBidRequest": {
+      "id": "test-request-id",
+      "app": {
+        "bundle": "test.app.bundle"
+      },
+      "device": {
+        "ifa": "test-ifa-123456",
+        "ip": "91.199.242.236",
+        "ua": "random user agent",
+        "os": "android"
+      },
+      "regs": {
+        "ext": {
+          "us_privacy": "1YYY"
+        }
+      },
+      "imp": [
+        {
+          "id": "test-imp-id",
+          "banner": {
+            "format": [
+              {
+                "w": 300,
+                "h": 250
+              }
+            ],
+            "w": 300,
+            "h": 250
+          },
+          "ext": {
+            "bidder": {
+              "publisherId": "123456"
+            }
+          }
+        }
+      ]
+    },
+    "httpCalls": [
+      {
+        "expectedRequest": {
+          "uri": "https://roundhouseads.com/openrtb2",
+          "headers": {
+            "Content-Type": [
+              "application/json;charset=utf-8"
+            ],
+            "Accept": [
+              "application/json"
+            ],
+            "X-Integration-Type": ["1"]
+          },
+          "body": {
+            "id": "test-request-id",
+            "app": {
+              "bundle": "test.app.bundle",
+              "publisher": {
+                "id": "123456"
+              }
+            },
+            "device": {
+              "ifa": "test-ifa-123456",
+              "ip": "91.199.242.236",
+              "ua": "random user agent",
+              "os": "android"
+            },
+            "regs": {
+              "ext": {
+                "us_privacy": "1YYY"
+              }
+            },
+            "imp": [
+              {
+                "id": "test-imp-id",
+                "banner": {
+                  "format": [
+                    {
+                      "w": 300,
+                      "h": 250
+                    }
+                  ],
+                  "w": 300,
+                  "h": 250
+                },
+                "ext": {
+                  "bidder": {
+                    "publisherId": "123456"
+                  }
+                }
+              }
+            ]
+          },
+          "impIDs": ["test-imp-id"]
+        },
+        "mockResponse": {
+          "status": 204
+        }
+      }
+    ],
+    "expectedBidResponses": [
+      {
+        "currency": "USD",
+        "bids": []
+      }
+    ]
+  }
\ No newline at end of file
diff --git a/adapters/roundhouseads/roundhouseadstest/supplemental/400-response-from-target.json b/adapters/roundhouseads/roundhouseadstest/supplemental/400-response-from-target.json
new file mode 100644
index 0000000000..017d5a4aed
--- /dev/null
+++ b/adapters/roundhouseads/roundhouseadstest/supplemental/400-response-from-target.json
@@ -0,0 +1,105 @@
+{
+    "mockBidRequest": {
+      "id": "test-request-id",
+      "app": {
+        "bundle": "test.app.bundle"
+      },
+      "device": {
+        "ifa": "test-ifa-123456",
+        "ip": "91.199.242.236",
+        "ua": "random user agent",
+        "os": "android"
+      },
+      "regs": {
+        "ext": {
+          "us_privacy": "1YYY"
+        }
+      },
+      "imp": [
+        {
+          "id": "test-imp-id",
+          "banner": {
+            "format": [
+              {
+                "w": 300,
+                "h": 250
+              }
+            ],
+            "w": 300,
+            "h": 250
+          },
+          "ext": {
+            "bidder": {
+              "publisherId": "123456"
+            }
+          }
+        }
+      ]
+    },
+    "httpCalls": [
+      {
+        "expectedRequest": {
+          "uri": "https://roundhouseads.com/openrtb2",
+          "headers": {
+            "Content-Type": [
+              "application/json;charset=utf-8"
+            ],
+            "Accept": [
+              "application/json"
+            ],
+            "X-Integration-Type": ["1"]
+          },
+          "body": {
+            "id": "test-request-id",
+            "app": {
+              "bundle": "test.app.bundle",
+              "publisher": {
+                "id": "123456"
+              }
+            },
+            "device": {
+              "ifa": "test-ifa-123456",
+              "ip": "91.199.242.236",
+              "ua": "random user agent",
+              "os": "android"
+            },
+            "regs": {
+              "ext": {
+                "us_privacy": "1YYY"
+              }
+            },
+            "imp": [
+              {
+                "id": "test-imp-id",
+                "banner": {
+                  "format": [
+                    {
+                      "w": 300,
+                      "h": 250
+                    }
+                  ],
+                  "w": 300,
+                  "h": 250
+                },
+                "ext": {
+                  "bidder": {
+                    "publisherId": "123456"
+                  }
+                }
+              }
+            ]
+          },
+          "impIDs": ["test-imp-id"]
+        },
+        "mockResponse": {
+          "status": 400
+        }
+      }
+    ],
+    "expectedMakeBidsErrors": [
+      {
+        "value": "Unexpected status code: 400. Run with request.debug = 1 for more info",
+        "comparison": "literal"
+      }
+    ]
+  }
\ No newline at end of file
diff --git a/adapters/roundhouseads/roundhouseadstest/supplemental/500-response-from-target.json b/adapters/roundhouseads/roundhouseadstest/supplemental/500-response-from-target.json
new file mode 100644
index 0000000000..bf6742edf1
--- /dev/null
+++ b/adapters/roundhouseads/roundhouseadstest/supplemental/500-response-from-target.json
@@ -0,0 +1,105 @@
+{
+    "mockBidRequest": {
+      "id": "test-request-id",
+      "app": {
+        "bundle": "test.app.bundle"
+      },
+      "device": {
+        "ifa": "test-ifa-123456",
+        "ip": "91.199.242.236",
+        "ua": "random user agent",
+        "os": "android"
+      },
+      "regs": {
+        "ext": {
+          "us_privacy": "1YYY"
+        }
+      },
+      "imp": [
+        {
+          "id": "test-imp-id",
+          "banner": {
+            "format": [
+              {
+                "w": 300,
+                "h": 250
+              }
+            ],
+            "w": 300,
+            "h": 250
+          },
+          "ext": {
+            "bidder": {
+              "publisherId": "123456"
+            }
+          }
+        }
+      ]
+    },
+    "httpCalls": [
+      {
+        "expectedRequest": {
+          "uri": "https://roundhouseads.com/openrtb2",
+          "headers": {
+            "Content-Type": [
+              "application/json;charset=utf-8"
+            ],
+            "Accept": [
+              "application/json"
+            ],
+            "X-Integration-Type": ["1"]
+          },
+          "body": {
+            "id": "test-request-id",
+            "app": {
+              "bundle": "test.app.bundle",
+              "publisher": {
+                "id": "123456"
+              }
+            },
+            "device": {
+              "ifa": "test-ifa-123456",
+              "ip": "91.199.242.236",
+              "ua": "random user agent",
+              "os": "android"
+            },
+            "regs": {
+              "ext": {
+                "us_privacy": "1YYY"
+              }
+            },
+            "imp": [
+              {
+                "id": "test-imp-id",
+                "banner": {
+                  "format": [
+                    {
+                      "w": 300,
+                      "h": 250
+                    }
+                  ],
+                  "w": 300,
+                  "h": 250
+                },
+                "ext": {
+                  "bidder": {
+                    "publisherId": "123456"
+                  }
+                }
+              }
+            ]
+          },
+          "impIDs": ["test-imp-id"]
+        },
+        "mockResponse": {
+          "status": 500
+        }
+      }
+    ],
+    "expectedMakeBidsErrors": [
+      {
+        "value": "Unexpected status code: 500. Run with request.debug = 1 for more info",
+        "comparison": "literal"
+      }
+    ]
+  }
\ No newline at end of file
diff --git a/adapters/roundhouseads/roundhouseadstest/supplemental/invalid-mtype.json b/adapters/roundhouseads/roundhouseadstest/supplemental/invalid-mtype.json
new file mode 100644
index 0000000000..a001aef769
--- /dev/null
+++ b/adapters/roundhouseads/roundhouseadstest/supplemental/invalid-mtype.json
@@ -0,0 +1,85 @@
+{
+    "mockBidRequest": {
+      "id": "test-request-id",
+      "imp": [
+        {
+          "id": "test-imp-id",
+          "native": {
+            "request": ""
+          },
+          "ext": {
+            "bidder": {
+              "publisherId": "123456"
+            }
+          }
+        }
+      ]
+    },
+    "httpCalls": [
+      {
+        "expectedRequest": {
+          "uri": "https://roundhouseads.com/openrtb2",
+          "headers": {
+            "Content-Type": [
+              "application/json;charset=utf-8"
+            ],
+            "Accept": [
+              "application/json"
+            ],
+            "X-Integration-Type": ["1"]
+          },
+          "body": {
+            "id": "test-request-id",
+            "imp": [
+              {
+                "id": "test-imp-id",
+                "native": {
+                  "request": ""
+                },
+                "ext": {
+                  "bidder": {
+                    "publisherId": "123456"
+                  }
+                }
+              }
+            ]
+          },
+          "impIDs": ["test-imp-id"]
+        },
+        "mockResponse": {
+          "status": 200,
+          "body": {
+            "currency": "USD",
+            "seatbid": [
+              {
+                "bid": [
+                  {
+                    "id": "test-slot-id",
+                    "impid": "test-imp-id",
+                    "price": 0.1,
+                    "crid": "creative-123",
+                    "adm": "<iframe id='789abc' name='789abc' src='http://creative-url.roundhouseads.com'></iframe>",
+                    "h": 250,
+                    "w": 300,
+                    "ext": {
+                      "prebid": {
+                        "type": "native"
+                      }
+                    },
+                    "mtype": -1
+                  }
+                ]
+              }
+            ]
+          }
+        }
+      }
+    ],
+    "expectedBidResponses": [],
+    "expectedMakeBidsErrors": [
+      {
+        "value": "unsupported mtype: -1",
+        "comparison": "literal"
+      }
+    ]
+  }
\ No newline at end of file
diff --git a/adapters/roundhouseads/roundhouseadstest/supplemental/invalid-publisher.json b/adapters/roundhouseads/roundhouseadstest/supplemental/invalid-publisher.json
new file mode 100644
index 0000000000..dd8110906c
--- /dev/null
+++ b/adapters/roundhouseads/roundhouseadstest/supplemental/invalid-publisher.json
@@ -0,0 +1,44 @@
+{
+    "mockBidRequest": {
+      "id": "test-request-id",
+      "app": {
+        "bundle": "test.app.bundle",
+        "publisher": {
+          "id": "this_id_will_be_replaced"
+        }
+      },
+      "device": {
+        "ifa": "test-ifa-123456",
+        "os": "android",
+        "ip": "91.199.242.236",
+        "ua": "random user agent"
+      },
+      "imp": [
+        {
+          "id": "test-imp-id",
+          "banner": {
+            "format": [
+              {
+                "w": 300,
+                "h": 250
+              }
+            ],
+            "w": 300,
+            "h": 250
+          },
+          "ext": {
+            "bidder": {
+              "publisherId": 123456
+            }
+          }
+        }
+      ]
+    },
+    "httpCalls": [],
+    "expectedMakeRequestsErrors": [
+      {
+        "value": "json: cannot unmarshal number into Go struct field ExtImpRoundhouseads.publisherId of type string",
+        "comparison": "literal"
+      }
+    ]
+  }
\ No newline at end of file
diff --git a/exchange/adapter_builders.go b/exchange/adapter_builders.go
index 67e28286f0..3000c612c2 100755
--- a/exchange/adapter_builders.go
+++ b/exchange/adapter_builders.go
@@ -168,6 +168,7 @@ import (
 	"github.com/prebid/prebid-server/v3/adapters/richaudience"
 	"github.com/prebid/prebid-server/v3/adapters/rise"
 	"github.com/prebid/prebid-server/v3/adapters/roulax"
+	"github.com/prebid/prebid-server/v3/adapters/roundhouseads"
 	"github.com/prebid/prebid-server/v3/adapters/rtbhouse"
 	"github.com/prebid/prebid-server/v3/adapters/rubicon"
 	salunamedia "github.com/prebid/prebid-server/v3/adapters/sa_lunamedia"
@@ -400,6 +401,7 @@ func newAdapterBuilders() map[openrtb_ext.BidderName]adapters.Builder {
 		openrtb_ext.BidderRichaudience:      richaudience.Builder,
 		openrtb_ext.BidderRise:              rise.Builder,
 		openrtb_ext.BidderRoulax:            roulax.Builder,
+		openrtb_ext.BidderRoundhouseads:     roundhouseads.Builder,
 		openrtb_ext.BidderRTBHouse:          rtbhouse.Builder,
 		openrtb_ext.BidderRubicon:           rubicon.Builder,
 		openrtb_ext.BidderSeedingAlliance:   seedingAlliance.Builder,
diff --git a/go.mod b/go.mod
index e844fe5bf2..fe1597fc57 100644
--- a/go.mod
+++ b/go.mod
@@ -5,6 +5,7 @@ go 1.21
 retract v3.0.0 // Forgot to update major version in import path and module name
 
 require (
+	github.com/51Degrees/device-detection-go/v4 v4.4.35
 	github.com/DATA-DOG/go-sqlmock v1.5.0
 	github.com/IABTechLab/adscert v0.34.0
 	github.com/NYTimes/gziphandler v1.1.1
@@ -32,8 +33,11 @@ require (
 	github.com/prometheus/client_model v0.2.0
 	github.com/rcrowley/go-metrics v0.0.0-20201227073835-cf1acfcdf475
 	github.com/rs/cors v1.11.0
+	github.com/spf13/cast v1.5.0
 	github.com/spf13/viper v1.12.0
 	github.com/stretchr/testify v1.8.1
+	github.com/tidwall/gjson v1.17.1
+	github.com/tidwall/sjson v1.2.5
 	github.com/vrischmann/go-metrics-influxdb v0.1.1
 	github.com/xeipuuv/gojsonschema v1.2.0
 	github.com/yudai/gojsondiff v1.0.0
@@ -45,7 +49,6 @@ require (
 )
 
 require (
-	github.com/51Degrees/device-detection-go/v4 v4.4.35 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
@@ -65,15 +68,12 @@ require (
 	github.com/prometheus/procfs v0.7.3 // indirect
 	github.com/sergi/go-diff v1.2.0 // indirect
 	github.com/spf13/afero v1.8.2 // indirect
-	github.com/spf13/cast v1.5.0 // indirect
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/stretchr/objx v0.5.0 // indirect
 	github.com/subosito/gotenv v1.3.0 // indirect
-	github.com/tidwall/gjson v1.17.1 // indirect
 	github.com/tidwall/match v1.1.1 // indirect
 	github.com/tidwall/pretty v1.2.0 // indirect
-	github.com/tidwall/sjson v1.2.5 // indirect
 	github.com/xeipuuv/gojsonpointer v0.0.0-20180127040702-4e3ac2762d5f // indirect
 	github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect
 	github.com/yudai/golcs v0.0.0-20170316035057-ecda9a501e82 // indirect
diff --git a/openrtb_ext/bidders.go b/openrtb_ext/bidders.go
index f7706ce5c2..d9d78f2d71 100644
--- a/openrtb_ext/bidders.go
+++ b/openrtb_ext/bidders.go
@@ -186,6 +186,7 @@ var coreBidderNames []BidderName = []BidderName{
 	BidderRichaudience,
 	BidderRise,
 	BidderRoulax,
+	BidderRoundhouseads,
 	BidderRTBHouse,
 	BidderRubicon,
 	BidderSeedingAlliance,
@@ -515,6 +516,7 @@ const (
 	BidderRichaudience      BidderName = "richaudience"
 	BidderRise              BidderName = "rise"
 	BidderRoulax            BidderName = "roulax"
+	BidderRoundhouseads     BidderName = "roundhouseads"
 	BidderRTBHouse          BidderName = "rtbhouse"
 	BidderRubicon           BidderName = "rubicon"
 	BidderSeedingAlliance   BidderName = "seedingAlliance"
diff --git a/openrtb_ext/imp_roundhouseads.go b/openrtb_ext/imp_roundhouseads.go
new file mode 100644
index 0000000000..3102d13612
--- /dev/null
+++ b/openrtb_ext/imp_roundhouseads.go
@@ -0,0 +1,8 @@
+package openrtb_ext
+
+// ExtImpRoundhouseads defines the contract for bidrequest.imp[i].ext
+// PublisherId is a mandatory parameter for the Roundhouseads bidder.
+
+type ExtImpRoundhouseads struct {
+	PublisherId string `json:"publisherId"`
+}
diff --git a/static/bidder-info/roundhouseads.yaml b/static/bidder-info/roundhouseads.yaml
new file mode 100644
index 0000000000..3be74ff3f7
--- /dev/null
+++ b/static/bidder-info/roundhouseads.yaml
@@ -0,0 +1,26 @@
+endpoint: "http://pbsv4-env.eba-qx2kfrgj.us-east-1.elasticbeanstalk.com/openrtb2/auction"
+
+maintainer:
+  email: "info@roundhouseads.com"
+#gvlVendorID: 42 #need assigned ID
+capabilities:
+  app:
+    mediaTypes:
+      - banner
+      - video
+      - native
+  site:
+    mediaTypes:
+      - banner
+      - video
+      - native
+userSync:
+  # Roundhouseads supports user syncing, but requires configuration by the host. Contact a technical account manager
+  # or this bidder directly at the email address in this file to ask about enabling user sync.
+  endpointCompression: gzip
+  supports:
+    - redirect
+    - iframe
+openrtb:
+  gpp-supported: true
+
diff --git a/static/bidder-params/roundhouseads.json b/static/bidder-params/roundhouseads.json
new file mode 100644
index 0000000000..8c64cc99cd
--- /dev/null
+++ b/static/bidder-params/roundhouseads.json
@@ -0,0 +1,13 @@
+{
+	"$schema": "http://json-schema.org/draft-04/schema#",
+	"title": "Roundhouseads Adapter Params",
+	"description": "A schema which validates params accepted by the Roundhouseads adapter",
+	"type": "object",
+	"properties": {
+		"publisherId": {
+			"type": "string",
+			"description": "An ID which identifies the publisher"
+		}
+	},
+	"required": ["publisherId"]
+}
\ No newline at end of file