diff --git a/adapters/beop/beop.go b/adapters/beop/beop.go
new file mode 100644
index 00000000000..ffbb4c94bd8
--- /dev/null
+++ b/adapters/beop/beop.go
@@ -0,0 +1,172 @@
+package beop
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/url"
+
+	"github.com/prebid/openrtb/v20/openrtb2"
+	"github.com/prebid/prebid-server/v3/adapters"
+	"github.com/prebid/prebid-server/v3/config"
+	"github.com/prebid/prebid-server/v3/errortypes"
+	"github.com/prebid/prebid-server/v3/openrtb_ext"
+	"github.com/prebid/prebid-server/v3/util/jsonutil"
+)
+
+type adapter struct {
+	endpoint string
+}
+
+func Builder(
+	bidderName openrtb_ext.BidderName,
+	config config.Adapter,
+	server config.Server) (
+	adapters.Bidder, error,
+) {
+	bidder := &adapter{
+		endpoint: config.Endpoint,
+	}
+	return bidder, nil
+}
+
+func (a *adapter) getRequestExtImpBeop(imp *openrtb2.Imp) (*openrtb_ext.ExtImpBeop, error) {
+	var bidderExt adapters.ExtImpBidder
+	if err := jsonutil.Unmarshal(imp.Ext, &bidderExt); err != nil {
+		return nil, &errortypes.BadInput{
+			Message: "ext.bidder not provided",
+		}
+	}
+	var beopExt openrtb_ext.ExtImpBeop
+	if err := jsonutil.Unmarshal(bidderExt.Bidder, &beopExt); err != nil {
+		return nil, &errortypes.BadInput{
+			Message: "ext.bidder not provided",
+		}
+	}
+	return &beopExt, nil
+}
+
+func (a *adapter) buildEndpointURL(params *openrtb_ext.ExtImpBeop) (string, error) {
+	url, _ := url.Parse(a.endpoint)
+	query := url.Query()
+	if pid := params.BeopPublisherID; len(pid) != 0 {
+		query.Set("pid", pid)
+	}
+	if nid := params.BeopNetworkID; len(nid) != 0 {
+		query.Set("nid", nid)
+	}
+	if nptnid := params.BeopNetworkPartnerID; len(nptnid) != 0 {
+		query.Set("nptnid", nptnid)
+	}
+	url.RawQuery = query.Encode()
+	return url.String(), nil
+}
+
+func (a *adapter) MakeRequests(
+	request *openrtb2.BidRequest,
+	requestInfo *adapters.ExtraRequestInfo) (
+	[]*adapters.RequestData, []error,
+) {
+	var beopExt *openrtb_ext.ExtImpBeop
+	var err error
+
+	beopExt, err = a.getRequestExtImpBeop(&request.Imp[0])
+	if err != nil {
+		return nil, []error{err}
+	}
+
+	requestJSON, err := json.Marshal(request)
+	if err != nil {
+		return nil, []error{err}
+	}
+
+	headers := http.Header{}
+	headers.Add("Content-Type", "application/json;charset=utf-8")
+	headers.Add("Accept", "application/json")
+
+	url, err := a.buildEndpointURL(beopExt)
+	if err != nil {
+		return nil, []error{err}
+	}
+
+	requestData := &adapters.RequestData{
+		Method:  "POST",
+		Uri:     url,
+		Body:    requestJSON,
+		Headers: headers,
+		ImpIDs:  openrtb_ext.GetImpIDs(request.Imp),
+	}
+
+	return []*adapters.RequestData{requestData}, nil
+}
+
+func getMediaTypeForBid(bid *openrtb2.Bid) (openrtb_ext.BidType, error) {
+	mType := bid.MType
+	var bidType openrtb_ext.BidType
+	switch mType {
+	case openrtb2.MarkupBanner:
+		bidType = openrtb_ext.BidTypeBanner
+	case openrtb2.MarkupVideo:
+		bidType = openrtb_ext.BidTypeVideo
+	default:
+		return bidType, fmt.Errorf("Failed to parse bid mType for impression \"%s\"", bid.ImpID)
+	}
+	return bidType, nil
+}
+
+func (a *adapter) MakeBids(
+	request *openrtb2.BidRequest,
+	requestData *adapters.RequestData,
+	responseData *adapters.ResponseData) (
+	*adapters.BidderResponse, []error,
+) {
+	if responseData.StatusCode == http.StatusNoContent {
+		return nil, nil
+	}
+
+	if responseData.StatusCode == http.StatusServiceUnavailable {
+		return nil, []error{&errortypes.BadInput{
+			Message: fmt.Sprintf("Service Unavailable. Status Code: [ %d ] ", responseData.StatusCode),
+		}}
+	}
+
+	if responseData.StatusCode == http.StatusBadRequest {
+		err := &errortypes.BadServerResponse{
+			Message: fmt.Sprintf("Unexpected status code: %d. Run with request.debug = 1 for more info.", responseData.StatusCode),
+		}
+		return nil, []error{err}
+	}
+
+	var responseBody openrtb2.BidResponse
+	if err := jsonutil.Unmarshal(responseData.Body, &responseBody); err != nil {
+		return nil, []error{&errortypes.BadServerResponse{
+			Message: "Bad Server Response",
+		}}
+	}
+
+	if len(responseBody.SeatBid) == 0 {
+		return nil, []error{&errortypes.BadServerResponse{
+			Message: "Empty SeatBid array",
+		}}
+	}
+
+	bidResponseFinal := adapters.NewBidderResponseWithBidsCapacity(len(responseBody.SeatBid[0].Bid))
+	seatBid := responseBody.SeatBid[0]
+	var errors []error
+	for i := range seatBid.Bid {
+		bid := &seatBid.Bid[i]
+		bidType, err := getMediaTypeForBid(bid)
+		if err != nil {
+			errors = append(errors, err)
+			continue
+		}
+		bidResponseFinal.Bids = append(bidResponseFinal.Bids, &adapters.TypedBid{
+			Bid:     bid,
+			BidType: bidType,
+		})
+	}
+	if len(bidResponseFinal.Bids) == 0 {
+		return nil, errors
+	}
+	return bidResponseFinal, errors
+}
diff --git a/adapters/beop/beop_test.go b/adapters/beop/beop_test.go
new file mode 100644
index 00000000000..5960bc09f1c
--- /dev/null
+++ b/adapters/beop/beop_test.go
@@ -0,0 +1,21 @@
+package beop
+
+import (
+	"testing"
+
+	"github.com/prebid/prebid-server/v3/adapters/adapterstest"
+	"github.com/prebid/prebid-server/v3/config"
+	"github.com/prebid/prebid-server/v3/openrtb_ext"
+)
+
+func TestJsonSamples(t *testing.T) {
+	bidder, buildErr := Builder(openrtb_ext.BidderBeop, config.Adapter{
+		Endpoint: "http://hb-test.collectiveaudience.co/rtb/bid"},
+		config.Server{ExternalUrl: "http://hosturl.com", GvlID: 1, DataCenter: "2"})
+
+	if buildErr != nil {
+		t.Fatalf("Builder returned unexpected error %v", buildErr)
+	}
+
+	adapterstest.RunJSONBidderTest(t, "beoptest", bidder)
+}
diff --git a/adapters/beop/beoptest/exemplary/banner-web-with-nid.json b/adapters/beop/beoptest/exemplary/banner-web-with-nid.json
new file mode 100644
index 00000000000..e0c6f9a880c
--- /dev/null
+++ b/adapters/beop/beoptest/exemplary/banner-web-with-nid.json
@@ -0,0 +1,155 @@
+{
+  "mockBidRequest": {
+    "id": "request-id",
+    "site": {
+      "page": "test.com/page",
+      "domain": "test.com",
+      "cat": [
+        "IAB9-1"
+      ],
+      "publisher": {
+        "id": "123456789"
+      }
+    },
+    "device": {
+      "ua": "useragent",
+      "ip": "100.100.100.100",
+      "language": "en"
+    },
+    "tmax": 1000,
+    "user": {
+      "id": "some-user"
+    },
+    "imp": [
+      {
+        "id": "impression-id",
+        "tagid": "tid",
+        "banner": {
+          "w": 320,
+          "h": 50
+        },
+        "ext": {
+          "bidder": {
+            "nid": "aaaaaaaaaaaaaaaaaaaaaaaa",
+            "nptnid": "1234"
+          }
+        }
+      }
+    ]
+  },
+  "httpCalls": [
+    {
+      "expectedRequest": {
+        "method": "POST",
+        "uri": "http://hb-test.collectiveaudience.co/rtb/bid?nid=aaaaaaaaaaaaaaaaaaaaaaaa&nptnid=1234",
+        "headers": {
+          "Content-Type": [
+            "application/json;charset=utf-8"
+          ],
+          "Accept": [
+            "application/json"
+          ]
+        },
+        "body": {
+          "id": "request-id",
+          "device": {
+            "ua": "useragent",
+            "ip": "100.100.100.100",
+            "language": "en"
+          },
+          "imp": [
+            {
+              "id": "impression-id",
+              "banner": {
+                "w": 320,
+                "h": 50
+              },
+              "tagid": "tid",
+              "ext": {
+                "bidder": {
+                  "nid": "aaaaaaaaaaaaaaaaaaaaaaaa",
+                  "nptnid": "1234"
+                }
+              }
+            }
+          ],
+          "site": {
+            "page": "test.com/page",
+            "domain": "test.com",
+            "cat": [
+              "IAB9-1"
+            ],
+            "publisher": {
+              "id": "123456789"
+            }
+          },
+          "user": {
+            "id": "some-user"
+          },
+          "tmax": 1000
+        },
+        "impIDs": [
+          "impression-id"
+        ]
+      },
+      "mockResponse": {
+        "status": 200,
+        "body": {
+          "id": "resp-id",
+          "seatbid": [
+            {
+              "bid": [
+                {
+                  "id": "123456789",
+                  "impid": "impression-id",
+                  "price": 2,
+                  "adm": "adm code",
+                  "adomain": [
+                    "testdomain.com"
+                  ],
+                  "crid": "100",
+                  "w": 320,
+                  "h": 50,
+                  "mtype": 1,
+                  "ext": {
+                    "prebid": {
+                      "type": "banner"
+                    }
+                  }
+                }
+              ]
+            }
+          ],
+          "cur": "USD"
+        }
+      }
+    }
+  ],
+  "expectedBidResponses": [
+    {
+      "bids": [
+        {
+          "bid": {
+            "id": "123456789",
+            "impid": "impression-id",
+            "price": 2,
+            "adm": "adm code",
+            "adomain": [
+              "testdomain.com"
+            ],
+            "crid": "100",
+            "w": 320,
+            "h": 50,
+            "mtype": 1,
+            "ext": {
+              "prebid": {
+                "type": "banner"
+              }
+            }
+          },
+          "type": "banner"
+        }
+      ]
+    }
+  ]
+}
diff --git a/adapters/beop/beoptest/exemplary/banner-web.json b/adapters/beop/beoptest/exemplary/banner-web.json
new file mode 100644
index 00000000000..a757171e346
--- /dev/null
+++ b/adapters/beop/beoptest/exemplary/banner-web.json
@@ -0,0 +1,153 @@
+{
+  "mockBidRequest": {
+    "id": "request-id",
+    "site": {
+      "page": "test.com/page",
+      "domain": "test.com",
+      "cat": [
+        "IAB9-1"
+      ],
+      "publisher": {
+        "id": "123456789"
+      }
+    },
+    "device": {
+      "ua": "useragent",
+      "ip": "100.100.100.100",
+      "language": "en"
+    },
+    "tmax": 1000,
+    "user": {
+      "id": "some-user"
+    },
+    "imp": [
+      {
+        "id": "impression-id",
+        "tagid": "tid",
+        "banner": {
+          "w": 320,
+          "h": 50
+        },
+        "ext": {
+          "bidder": {
+            "pid": "aaaaaaaaaaaaaaaaaaaaaaaa"
+          }
+        }
+      }
+    ]
+  },
+  "httpCalls": [
+    {
+      "expectedRequest": {
+        "method": "POST",
+        "uri": "http://hb-test.collectiveaudience.co/rtb/bid?pid=aaaaaaaaaaaaaaaaaaaaaaaa",
+        "headers": {
+          "Content-Type": [
+            "application/json;charset=utf-8"
+          ],
+          "Accept": [
+            "application/json"
+          ]
+        },
+        "body": {
+          "id": "request-id",
+          "device": {
+            "ua": "useragent",
+            "ip": "100.100.100.100",
+            "language": "en"
+          },
+          "imp": [
+            {
+              "id": "impression-id",
+              "banner": {
+                "w": 320,
+                "h": 50
+              },
+              "tagid": "tid",
+              "ext": {
+                "bidder": {
+                  "pid": "aaaaaaaaaaaaaaaaaaaaaaaa"
+                }
+              }
+            }
+          ],
+          "site": {
+            "page": "test.com/page",
+            "domain": "test.com",
+            "cat": [
+              "IAB9-1"
+            ],
+            "publisher": {
+              "id": "123456789"
+            }
+          },
+          "user": {
+            "id": "some-user"
+          },
+          "tmax": 1000
+        },
+        "impIDs": [
+          "impression-id"
+        ]
+      },
+      "mockResponse": {
+        "status": 200,
+        "body": {
+          "id": "resp-id",
+          "seatbid": [
+            {
+              "bid": [
+                {
+                  "id": "123456789",
+                  "impid": "impression-id",
+                  "price": 2,
+                  "adm": "adm code",
+                  "adomain": [
+                    "testdomain.com"
+                  ],
+                  "crid": "100",
+                  "w": 320,
+                  "h": 50,
+                  "mtype": 1,
+                  "ext": {
+                    "prebid": {
+                      "type": "banner"
+                    }
+                  }
+                }
+              ]
+            }
+          ],
+          "cur": "USD"
+        }
+      }
+    }
+  ],
+  "expectedBidResponses": [
+    {
+      "bids": [
+        {
+          "bid": {
+            "id": "123456789",
+            "impid": "impression-id",
+            "price": 2,
+            "adm": "adm code",
+            "adomain": [
+              "testdomain.com"
+            ],
+            "crid": "100",
+            "w": 320,
+            "h": 50,
+            "mtype": 1,
+            "ext": {
+              "prebid": {
+                "type": "banner"
+              }
+            }
+          },
+          "type": "banner"
+        }
+      ]
+    }
+  ]
+}
diff --git a/adapters/beop/beoptest/exemplary/video-web.json b/adapters/beop/beoptest/exemplary/video-web.json
new file mode 100644
index 00000000000..bd4ff7acfec
--- /dev/null
+++ b/adapters/beop/beoptest/exemplary/video-web.json
@@ -0,0 +1,163 @@
+{
+  "mockBidRequest": {
+    "id": "request-id",
+    "site": {
+      "page": "test.com/page",
+      "domain": "test.com",
+      "cat": [
+        "IAB9-1"
+      ],
+      "publisher": {
+        "id": "123456789"
+      }
+    },
+    "device": {
+      "ua": "useragent",
+      "ip": "100.100.100.100",
+      "language": "en"
+    },
+    "tmax": 1000,
+    "user": {
+      "id": "some-user"
+    },
+    "imp": [
+      {
+        "id": "impression-id",
+        "tagid": "tid",
+        "video": {
+          "mimes": [
+            "video/mp4"
+          ],
+          "w": 640,
+          "h": 480,
+          "minduration": 30,
+          "maxduration": 150
+        },
+        "ext": {
+          "bidder": {
+            "pid": "aaaaaaaaaaaaaaaaaaaaaaaa"
+          }
+        }
+      }
+    ]
+  },
+  "httpCalls": [
+    {
+      "expectedRequest": {
+        "method": "POST",
+        "uri": "http://hb-test.collectiveaudience.co/rtb/bid?pid=aaaaaaaaaaaaaaaaaaaaaaaa",
+        "headers": {
+          "Content-Type": [
+            "application/json;charset=utf-8"
+          ],
+          "Accept": [
+            "application/json"
+          ]
+        },
+        "body": {
+          "id": "request-id",
+          "device": {
+            "ua": "useragent",
+            "ip": "100.100.100.100",
+            "language": "en"
+          },
+          "imp": [
+            {
+              "id": "impression-id",
+              "video": {
+                "mimes": [
+                  "video/mp4"
+                ],
+                "minduration": 30,
+                "maxduration": 150,
+                "w": 640,
+                "h": 480
+              },
+              "tagid": "tid",
+              "ext": {
+                "bidder": {
+                  "pid": "aaaaaaaaaaaaaaaaaaaaaaaa"
+                }
+              }
+            }
+          ],
+          "site": {
+            "page": "test.com/page",
+            "domain": "test.com",
+            "cat": [
+              "IAB9-1"
+            ],
+            "publisher": {
+              "id": "123456789"
+            }
+          },
+          "user": {
+            "id": "some-user"
+          },
+          "tmax": 1000
+        },
+        "impIDs": [
+          "impression-id"
+        ]
+      },
+      "mockResponse": {
+        "status": 200,
+        "body": {
+          "id": "resp-id",
+          "seatbid": [
+            {
+              "bid": [
+                {
+                  "id": "123456789",
+                  "impid": "impression-id",
+                  "price": 2,
+                  "adm": "adm code",
+                  "adomain": [
+                    "testdomain.com"
+                  ],
+                  "crid": "100",
+                  "w": 1280,
+                  "h": 720,
+                  "mtype": 2,
+                  "ext": {
+                    "prebid": {
+                      "type": "video"
+                    }
+                  }
+                }
+              ]
+            }
+          ],
+          "cur": "USD"
+        }
+      }
+    }
+  ],
+  "expectedBidResponses": [
+    {
+      "bids": [
+        {
+          "bid": {
+            "id": "123456789",
+            "impid": "impression-id",
+            "price": 2,
+            "adm": "adm code",
+            "adomain": [
+              "testdomain.com"
+            ],
+            "crid": "100",
+            "w": 1280,
+            "h": 720,
+            "mtype": 2,
+            "ext": {
+              "prebid": {
+                "type": "video"
+              }
+            }
+          },
+          "type": "video"
+        }
+      ]
+    }
+  ]
+}
diff --git a/adapters/beop/beoptest/supplemental/empty-seatbid-array.json b/adapters/beop/beoptest/supplemental/empty-seatbid-array.json
new file mode 100644
index 00000000000..0b709b2b935
--- /dev/null
+++ b/adapters/beop/beoptest/supplemental/empty-seatbid-array.json
@@ -0,0 +1,111 @@
+{
+  "mockBidRequest": {
+    "id": "request-id",
+    "site": {
+      "page": "test.com/page",
+      "domain": "test.com",
+      "cat": [
+        "IAB9-1"
+      ],
+      "publisher": {
+        "id": "123456789"
+      }
+    },
+    "device": {
+      "ua": "useragent",
+      "ip": "100.100.100.100",
+      "language": "en"
+    },
+    "tmax": 1000,
+    "user": {
+      "id": "some-user"
+    },
+    "imp": [
+      {
+        "id": "impression-id",
+        "tagid": "tid",
+        "banner": {
+          "w": 320,
+          "h": 50
+        },
+        "ext": {
+          "bidder": {
+            "pid": "aaaaaaaaaaaaaaaaaaaaaaaa"
+          }
+        }
+      }
+    ]
+  },
+  "httpCalls": [
+    {
+      "expectedRequest": {
+        "headers": {
+          "Content-Type": [
+            "application/json;charset=utf-8"
+          ],
+          "Accept": [
+            "application/json"
+          ]
+        },
+        "uri": "http://hb-test.collectiveaudience.co/rtb/bid?pid=aaaaaaaaaaaaaaaaaaaaaaaa",
+        "body": {
+          "id": "request-id",
+          "device": {
+            "ua": "useragent",
+            "ip": "100.100.100.100",
+            "language": "en"
+          },
+          "imp": [
+            {
+              "id": "impression-id",
+              "banner": {
+                "w": 320,
+                "h": 50
+              },
+              "tagid": "tid",
+              "ext": {
+                "bidder": {
+                  "pid": "aaaaaaaaaaaaaaaaaaaaaaaa"
+                }
+              }
+            }
+          ],
+          "site": {
+            "page": "test.com/page",
+            "domain": "test.com",
+            "cat": [
+              "IAB9-1"
+            ],
+            "publisher": {
+              "id": "123456789"
+            }
+          },
+          "user": {
+            "id": "some-user"
+          },
+          "tmax": 1000
+        },
+        "impIDs": [
+          "impression-id"
+        ]
+      },
+      "mockResponse": {
+        "status": 200,
+        "body": {
+          "id": "resp-id",
+          "seatbid": []
+        }
+      }
+    }
+  ],
+  "mockResponse": {
+    "status": 200,
+    "body": "invalid response"
+  },
+  "expectedMakeBidsErrors": [
+    {
+      "value": "Empty SeatBid array",
+      "comparison": "literal"
+    }
+  ]
+}
diff --git a/adapters/beop/beoptest/supplemental/invalid-bid-type.json b/adapters/beop/beoptest/supplemental/invalid-bid-type.json
new file mode 100644
index 00000000000..d0a8580963d
--- /dev/null
+++ b/adapters/beop/beoptest/supplemental/invalid-bid-type.json
@@ -0,0 +1,131 @@
+{
+  "mockBidRequest": {
+    "id": "request-id",
+    "site": {
+      "page": "test.com/page",
+      "domain": "test.com",
+      "cat": [
+        "IAB9-1"
+      ],
+      "publisher": {
+        "id": "123456789"
+      }
+    },
+    "device": {
+      "ua": "useragent",
+      "ip": "100.100.100.100",
+      "language": "en"
+    },
+    "tmax": 1000,
+    "user": {
+      "id": "some-user"
+    },
+    "imp": [
+      {
+        "id": "impression-id",
+        "tagid": "tid",
+        "banner": {
+          "w": 320,
+          "h": 50
+        },
+        "ext": {
+          "bidder": {
+            "pid": "aaaaaaaaaaaaaaaaaaaaaaaa"
+          }
+        }
+      }
+    ]
+  },
+  "httpCalls": [
+    {
+      "expectedRequest": {
+        "headers": {
+          "Content-Type": [
+            "application/json;charset=utf-8"
+          ],
+          "Accept": [
+            "application/json"
+          ]
+        },
+        "uri": "http://hb-test.collectiveaudience.co/rtb/bid?pid=aaaaaaaaaaaaaaaaaaaaaaaa",
+        "body": {
+          "id": "request-id",
+          "device": {
+            "ua": "useragent",
+            "ip": "100.100.100.100",
+            "language": "en"
+          },
+          "imp": [
+            {
+              "id": "impression-id",
+              "banner": {
+                "w": 320,
+                "h": 50
+              },
+              "tagid": "tid",
+              "ext": {
+                "bidder": {
+                  "pid": "aaaaaaaaaaaaaaaaaaaaaaaa"
+                }
+              }
+            }
+          ],
+          "site": {
+            "page": "test.com/page",
+            "domain": "test.com",
+            "cat": [
+              "IAB9-1"
+            ],
+            "publisher": {
+              "id": "123456789"
+            }
+          },
+          "user": {
+            "id": "some-user"
+          },
+          "tmax": 1000
+        },
+        "impIDs": [
+          "impression-id"
+        ]
+      },
+      "mockResponse": {
+        "status": 200,
+        "body": {
+          "id": "resp-id",
+          "seatbid": [
+            {
+              "bid": [
+                {
+                  "id": "123456789",
+                  "impid": "impression-id",
+                  "price": 2,
+                  "adm": "adm code",
+                  "adomain": [
+                    "testdomain.com"
+                  ],
+                  "crid": "100",
+                  "w": 320,
+                  "h": 50,
+                  "mtype": 3,
+                  "ext": {
+                    "prebid": {
+                      "type": "audio"
+                    }
+                  }
+                }
+              ]
+            }
+          ],
+          "cur": "USD"
+        }
+      }
+    }
+  ],
+  "expectedMakeBidsErrors": [
+    {
+      "value": "Failed to parse bid mType for impression \"impression-id\"",
+      "comparison": "literal"
+    }
+  ]
+}
diff --git a/adapters/beop/beoptest/supplemental/invalid-response.json b/adapters/beop/beoptest/supplemental/invalid-response.json
new file mode 100644
index 00000000000..8c5537acefd
--- /dev/null
+++ b/adapters/beop/beoptest/supplemental/invalid-response.json
@@ -0,0 +1,104 @@
+{
+  "mockBidRequest": {
+    "id": "request-id",
+    "site": {
+      "page": "test.com/page",
+      "domain": "test.com",
+      "cat": [
+        "IAB9-1"
+      ],
+      "publisher": {
+        "id": "123456789"
+      }
+    },
+    "device": {
+      "ua": "useragent",
+      "ip": "100.100.100.100",
+      "language": "en"
+    },
+    "tmax": 1000,
+    "user": {
+      "id": "some-user"
+    },
+    "imp": [
+      {
+        "id": "impression-id",
+        "tagid": "tid",
+        "banner": {
+          "w": 320,
+          "h": 50
+        },
+        "ext": {
+          "bidder": {
+            "pid": "aaaaaaaaaaaaaaaaaaaaaaaa"
+          }
+        }
+      }
+    ]
+  },
+  "httpCalls": [
+    {
+      "expectedRequest": {
+        "headers": {
+          "Content-Type": [
+            "application/json;charset=utf-8"
+          ],
+          "Accept": [
+            "application/json"
+          ]
+        },
+        "uri": "http://hb-test.collectiveaudience.co/rtb/bid?pid=aaaaaaaaaaaaaaaaaaaaaaaa",
+        "body": {
+          "id": "request-id",
+          "device": {
+            "ua": "useragent",
+            "ip": "100.100.100.100",
+            "language": "en"
+          },
+          "imp": [
+            {
+              "id": "impression-id",
+              "banner": {
+                "w": 320,
+                "h": 50
+              },
+              "tagid": "tid",
+              "ext": {
+                "bidder": {
+                  "pid": "aaaaaaaaaaaaaaaaaaaaaaaa"
+                }
+              }
+            }
+          ],
+          "site": {
+            "page": "test.com/page",
+            "domain": "test.com",
+            "cat": [
+              "IAB9-1"
+            ],
+            "publisher": {
+              "id": "123456789"
+            }
+          },
+          "user": {
+            "id": "some-user"
+          },
+          "tmax": 1000
+        },
+        "impIDs": [
+          "impression-id"
+        ]
+      },
+      "mockResponse": {
+        "status": 200,
+        "body": "invalid response"
+      }
+    }
+  ],
+  "expectedMakeBidsErrors": [
+    {
+      "value": "Bad Server Response",
+      "comparison": "literal"
+    }
+  ]
+}
diff --git a/adapters/beop/beoptest/supplemental/missing-bidder-params.json b/adapters/beop/beoptest/supplemental/missing-bidder-params.json
new file mode 100644
index 00000000000..4c2de07072d
--- /dev/null
+++ b/adapters/beop/beoptest/supplemental/missing-bidder-params.json
@@ -0,0 +1,41 @@
+{
+  "mockBidRequest": {
+    "id": "request-id",
+    "site": {
+      "page": "test.com/page",
+      "domain": "test.com",
+      "cat": [
+        "IAB9-1"
+      ],
+      "publisher": {
+        "id": "123456789"
+      }
+    },
+    "device": {
+      "ua": "useragent",
+      "ip": "100.100.100.100",
+      "language": "en"
+    },
+    "tmax": 1000,
+    "user": {
+      "id": "some-user"
+    },
+    "imp": [
+      {
+        "id": "impression-id",
+        "tagid": "tid",
+        "banner": {
+          "w": 320,
+          "h": 50
+        },
+        "ext": {}
+      }
+    ]
+  },
+  "expectedMakeRequestsErrors": [
+    {
+      "value": "ext.bidder not provided",
+      "comparison": "literal"
+    }
+  ]
+}
diff --git a/adapters/beop/beoptest/supplemental/status-code-bad-request.json b/adapters/beop/beoptest/supplemental/status-code-bad-request.json
new file mode 100644
index 00000000000..f8c0eb2d564
--- /dev/null
+++ b/adapters/beop/beoptest/supplemental/status-code-bad-request.json
@@ -0,0 +1,104 @@
+{
+  "mockBidRequest": {
+    "id": "request-id",
+    "site": {
+      "page": "test.com/page",
+      "domain": "test.com",
+      "cat": [
+        "IAB9-1"
+      ],
+      "publisher": {
+        "id": "123456789"
+      }
+    },
+    "device": {
+      "ua": "useragent",
+      "ip": "100.100.100.100",
+      "language": "en"
+    },
+    "tmax": 1000,
+    "user": {
+      "id": "some-user"
+    },
+    "imp": [
+      {
+        "id": "impression-id",
+        "tagid": "tid",
+        "banner": {
+          "w": 320,
+          "h": 50
+        },
+        "ext": {
+          "bidder": {
+            "pid": "aaaaaaaaaaaaaaaaaaaaaaaa"
+          }
+        }
+      }
+    ]
+  },
+  "httpCalls": [
+    {
+      "expectedRequest": {
+        "headers": {
+          "Content-Type": [
+            "application/json;charset=utf-8"
+          ],
+          "Accept": [
+            "application/json"
+          ]
+        },
+        "uri": "http://hb-test.collectiveaudience.co/rtb/bid?pid=aaaaaaaaaaaaaaaaaaaaaaaa",
+        "body": {
+          "id": "request-id",
+          "device": {
+            "ua": "useragent",
+            "ip": "100.100.100.100",
+            "language": "en"
+          },
+          "imp": [
+            {
+              "id": "impression-id",
+              "banner": {
+                "w": 320,
+                "h": 50
+              },
+              "tagid": "tid",
+              "ext": {
+                "bidder": {
+                  "pid": "aaaaaaaaaaaaaaaaaaaaaaaa"
+                }
+              }
+            }
+          ],
+          "site": {
+            "page": "test.com/page",
+            "domain": "test.com",
+            "cat": [
+              "IAB9-1"
+            ],
+            "publisher": {
+              "id": "123456789"
+            }
+          },
+          "user": {
+            "id": "some-user"
+          },
+          "tmax": 1000
+        },
+        "impIDs": [
+          "impression-id"
+        ]
+      },
+      "mockResponse": {
+        "status": 400
+      }
+    }
+  ],
+  "expectedBidResponses": [],
+  "expectedMakeBidsErrors": [
+    {
+      "value": "Unexpected status code: 400. Run with request.debug = 1 for more info.",
+      "comparison": "literal"
+    }
+  ]
+}
diff --git a/adapters/beop/beoptest/supplemental/status-code-no-content.json b/adapters/beop/beoptest/supplemental/status-code-no-content.json
new file mode 100644
index 00000000000..25280c2395d
--- /dev/null
+++ b/adapters/beop/beoptest/supplemental/status-code-no-content.json
@@ -0,0 +1,98 @@
+{
+  "mockBidRequest": {
+    "id": "request-id",
+    "site": {
+      "page": "test.com/page",
+      "domain": "test.com",
+      "cat": [
+        "IAB9-1"
+      ],
+      "publisher": {
+        "id": "123456789"
+      }
+    },
+    "device": {
+      "ua": "useragent",
+      "ip": "100.100.100.100",
+      "language": "en"
+    },
+    "tmax": 1000,
+    "user": {
+      "id": "some-user"
+    },
+    "imp": [
+      {
+        "id": "impression-id",
+        "tagid": "tid",
+        "banner": {
+          "w": 320,
+          "h": 50
+        },
+        "ext": {
+          "bidder": {
+            "pid": "aaaaaaaaaaaaaaaaaaaaaaaa"
+          }
+        }
+      }
+    ]
+  },
+  "httpCalls": [
+    {
+      "expectedRequest": {
+        "headers": {
+          "Content-Type": [
+            "application/json;charset=utf-8"
+          ],
+          "Accept": [
+            "application/json"
+          ]
+        },
+        "uri": "http://hb-test.collectiveaudience.co/rtb/bid?pid=aaaaaaaaaaaaaaaaaaaaaaaa",
+        "body": {
+          "id": "request-id",
+          "device": {
+            "ua": "useragent",
+            "ip": "100.100.100.100",
+            "language": "en"
+          },
+          "imp": [
+            {
+              "id": "impression-id",
+              "banner": {
+                "w": 320,
+                "h": 50
+              },
+              "tagid": "tid",
+              "ext": {
+                "bidder": {
+                  "pid": "aaaaaaaaaaaaaaaaaaaaaaaa"
+                }
+              }
+            }
+          ],
+          "site": {
+            "page": "test.com/page",
+            "domain": "test.com",
+            "cat": [
+              "IAB9-1"
+            ],
+            "publisher": {
+              "id": "123456789"
+            }
+          },
+          "user": {
+            "id": "some-user"
+          },
+          "tmax": 1000
+        },
+        "impIDs": [
+          "impression-id"
+        ]
+      },
+      "mockResponse": {
+        "status": 204
+      }
+    }
+  ],
+  "expectedBidResponses": []
+}
diff --git a/adapters/beop/beoptest/supplemental/status-code-service-unavailable.json b/adapters/beop/beoptest/supplemental/status-code-service-unavailable.json
new file mode 100644
index 00000000000..ce3742ab852
--- /dev/null
+++ b/adapters/beop/beoptest/supplemental/status-code-service-unavailable.json
@@ -0,0 +1,104 @@
+{
+  "mockBidRequest": {
+    "id": "request-id",
+    "site": {
+      "page": "test.com/page",
+      "domain": "test.com",
+      "cat": [
+        "IAB9-1"
+      ],
+      "publisher": {
+        "id": "123456789"
+      }
+    },
+    "device": {
+      "ua": "useragent",
+      "ip": "100.100.100.100",
+      "language": "en"
+    },
+    "tmax": 1000,
+    "user": {
+      "id": "some-user"
+    },
+    "imp": [
+      {
+        "id": "impression-id",
+        "tagid": "tid",
+        "banner": {
+          "w": 320,
+          "h": 50
+        },
+        "ext": {
+          "bidder": {
+            "pid": "aaaaaaaaaaaaaaaaaaaaaaaa"
+          }
+        }
+      }
+    ]
+  },
+  "httpCalls": [
+    {
+      "expectedRequest": {
+        "headers": {
+          "Content-Type": [
+            "application/json;charset=utf-8"
+          ],
+          "Accept": [
+            "application/json"
+          ]
+        },
+        "uri": "http://hb-test.collectiveaudience.co/rtb/bid?pid=aaaaaaaaaaaaaaaaaaaaaaaa",
+        "body": {
+          "id": "request-id",
+          "device": {
+            "ua": "useragent",
+            "ip": "100.100.100.100",
+            "language": "en"
+          },
+          "imp": [
+            {
+              "id": "impression-id",
+              "banner": {
+                "w": 320,
+                "h": 50
+              },
+              "tagid": "tid",
+              "ext": {
+                "bidder": {
+                  "pid": "aaaaaaaaaaaaaaaaaaaaaaaa"
+                }
+              }
+            }
+          ],
+          "site": {
+            "page": "test.com/page",
+            "domain": "test.com",
+            "cat": [
+              "IAB9-1"
+            ],
+            "publisher": {
+              "id": "123456789"
+            }
+          },
+          "user": {
+            "id": "some-user"
+          },
+          "tmax": 1000
+        },
+        "impIDs": [
+          "impression-id"
+        ]
+      },
+      "mockResponse": {
+        "status": 503
+      }
+    }
+  ],
+  "expectedBidResponses": [],
+  "expectedMakeBidsErrors": [
+    {
+      "value": "Service Unavailable. Status Code: [ 503 ] ",
+      "comparison": "literal"
+    }
+  ]
+}
diff --git a/adapters/beop/params_test.go b/adapters/beop/params_test.go
new file mode 100644
index 00000000000..5b854bd3af5
--- /dev/null
+++ b/adapters/beop/params_test.go
@@ -0,0 +1,49 @@
+package beop
+
+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.BidderBeop, json.RawMessage(validParam)); err != nil {
+			t.Errorf("Schema rejected adverxo params: %s", validParam)
+		}
+	}
+}
+
+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.BidderBeop, json.RawMessage(invalidParam)); err == nil {
+			t.Errorf("Schema allowed unexpected params: %s", invalidParam)
+		}
+	}
+}
+
+var validParams = []string{
+	`{ "pid": "aaaaaaaaaaaaaaaaaaaaaaaa"}`,
+	`{ "nid": "aaaaaaaaaaaaaaaaaaaaaaaa", "ntpnid": "1234"}`,
+}
+
+var invalidParams = []string{
+	``,
+	`null`,
+	`{}`,
+	`{ "fid": 5 }`,
+	`{ "pid": 5 }`,
+	`{ "pid": 5 }`,
+	`{ "nid": "", "nptnid": "" }`,
+}
diff --git a/exchange/adapter_builders.go b/exchange/adapter_builders.go
index 9a2aaa0bd21..ac33c868db8 100755
--- a/exchange/adapter_builders.go
+++ b/exchange/adapter_builders.go
@@ -52,6 +52,7 @@ import (
 	"github.com/prebid/prebid-server/v3/adapters/beachfront"
 	"github.com/prebid/prebid-server/v3/adapters/beintoo"
 	"github.com/prebid/prebid-server/v3/adapters/bematterfull"
+	"github.com/prebid/prebid-server/v3/adapters/beop"
 	"github.com/prebid/prebid-server/v3/adapters/between"
 	"github.com/prebid/prebid-server/v3/adapters/beyondmedia"
 	"github.com/prebid/prebid-server/v3/adapters/bidmachine"
@@ -318,6 +319,7 @@ func newAdapterBuilders() map[openrtb_ext.BidderName]adapters.Builder {
 		openrtb_ext.BidderBeachfront:        beachfront.Builder,
 		openrtb_ext.BidderBeintoo:           beintoo.Builder,
 		openrtb_ext.BidderBematterfull:      bematterfull.Builder,
+		openrtb_ext.BidderBeop:              beop.Builder,
 		openrtb_ext.BidderBetween:           between.Builder,
 		openrtb_ext.BidderBeyondMedia:       beyondmedia.Builder,
 		openrtb_ext.BidderBidmachine:        bidmachine.Builder,
diff --git a/openrtb_ext/bidders.go b/openrtb_ext/bidders.go
index 8cd543c1f16..9eed12b7650 100644
--- a/openrtb_ext/bidders.go
+++ b/openrtb_ext/bidders.go
@@ -68,6 +68,7 @@ var coreBidderNames []BidderName = []BidderName{
 	BidderBeachfront,
 	BidderBeintoo,
 	BidderBematterfull,
+	BidderBeop,
 	BidderBetween,
 	BidderBeyondMedia,
 	BidderBidmachine,
@@ -441,6 +442,7 @@ const (
 	BidderBeachfront        BidderName = "beachfront"
 	BidderBeintoo           BidderName = "beintoo"
 	BidderBematterfull      BidderName = "bematterfull"
+	BidderBeop              BidderName = "beop"
 	BidderBetween           BidderName = "between"
 	BidderBeyondMedia       BidderName = "beyondmedia"
 	BidderBidmachine        BidderName = "bidmachine"
diff --git a/openrtb_ext/imp_beop.go b/openrtb_ext/imp_beop.go
new file mode 100644
index 00000000000..797ac92ef02
--- /dev/null
+++ b/openrtb_ext/imp_beop.go
@@ -0,0 +1,7 @@
+package openrtb_ext
+
+type ExtImpBeop struct {
+	BeopPublisherID      string `json:"pid,omitempty"`
+	BeopNetworkID        string `json:"nid,omitempty"`
+	BeopNetworkPartnerID string `json:"nptnid,omitempty"`
+}
diff --git a/static/bidder-info/beop.yaml b/static/bidder-info/beop.yaml
new file mode 100644
index 00000000000..1129818f857
--- /dev/null
+++ b/static/bidder-info/beop.yaml
@@ -0,0 +1,12 @@
+endpoint: "https://hb.collectiveaudience.co/rtb/bid"
+endpointCompression: gzip
+maintainer:
+  email: tech@collectiveaudience.co
+gvlVendorID: 666
+openrtb:
+  version: 2.6
+capabilities:
+  site:
+    mediaTypes:
+      - banner
+      - video
diff --git a/static/bidder-params/beop.json b/static/bidder-params/beop.json
new file mode 100644
index 00000000000..8b34ac91f70
--- /dev/null
+++ b/static/bidder-params/beop.json
@@ -0,0 +1,33 @@
+{
+  "$schema": "http://json-schema.org/draft-04/schema#",
+  "title": "BeOp Adapter Params",
+  "description": "A schema which validates params accepted by the BeOp adapter",
+  "type": "object",
+  "properties": {
+    "pid": {
+      "type": "string",
+      "description": "Beop publisher ID"
+    },
+    "nid": {
+      "type": "string",
+      "description": "Beop Network ID"
+    },
+    "ntpnid": {
+      "type": "string",
+      "description": "Network partner ID"
+    }
+  },
+  "oneOf": [
+    {
+      "required": [
+        "pid"
+      ]
+    },
+    {
+      "required": [
+        "nid",
+        "ntpnid"
+      ]
+    }
+  ]
+}