diff --git a/adapters.json b/adapters.json
index 691b0a55bc6..704bb0bd388 100644
--- a/adapters.json
+++ b/adapters.json
@@ -70,6 +70,7 @@
     "trion",
     "prebidServer",
     "adsupply",
+    "cox",
     {
       "appnexus": {
         "alias": "brealtime"
diff --git a/src/adapters/cox.js b/src/adapters/cox.js
new file mode 100644
index 00000000000..e0e2a053251
--- /dev/null
+++ b/src/adapters/cox.js
@@ -0,0 +1,255 @@
+var bidfactory = require('../bidfactory.js');
+var bidmanager = require('../bidmanager.js');
+var adLoader = require('../adloader.js');
+
+var CoxAdapter = function CoxAdapter() {
+  var adZoneAttributeKeys = ['id', 'size', 'thirdPartyClickUrl'],
+    otherKeys = ['siteId', 'wrapper', 'referrerUrl'],
+    placementMap = {},
+    W = window;
+
+  var COX_BIDDER_CODE = 'cox';
+
+  function _callBids(params) {
+    var env = '';
+
+    // Create global cdsTag and CMT object (for the latter, only if needed )
+    W.cdsTag = {};
+    if (!W.CMT) W.CMT = _getCoxLite();
+
+    // Populate the tag with the info from prebid
+    var bids = params.bids || [],
+      tag = W.cdsTag,
+      i,
+      j;
+    for (i = 0; i < bids.length; i++) {
+      var bid = bids[i],
+        cfg = bid.params || {};
+
+      if (cfg.id) {
+        tag.zones = tag.zones || {};
+        var zone = {};
+
+        for (j = 0; j < adZoneAttributeKeys.length; j++) {
+          if (cfg[adZoneAttributeKeys[j]]) zone[adZoneAttributeKeys[j]] = cfg[adZoneAttributeKeys[j]];
+        }
+        for (j = 0; j < otherKeys.length; j++) {
+          if (cfg[otherKeys[j]]) tag[otherKeys[j]] = cfg[otherKeys[j]];
+        }
+        var adZoneKey = 'as' + cfg.id;
+        tag.zones[adZoneKey] = zone;
+
+        // Check for an environment setting
+        if (cfg.env) env = cfg.env;
+
+        // Update the placement map
+        var xy = (cfg.size || '0x0').split('x');
+        placementMap[adZoneKey] = {
+          p: bid.placementCode,
+          w: xy[0],
+          h: xy[1]
+        };
+      }
+    }
+    if (tag.zones && Object.keys(tag.zones).length > 0) {
+      tag.__callback__ = function (r) {
+        tag.response = r;
+        _notify();
+      };
+      adLoader.loadScript(W.CMT.Service.buildSrc(tag, env));
+    }
+  }
+
+  function _notify() {
+    // Will execute in the context of a bid
+    // function finalizeAd(price) {
+    //   this.ad = W.CMT.Service.setAuctionPrice(this.ad, price);
+    //   return this;
+    // }
+
+    for (var adZoneKey in placementMap) {
+      var bid = W.CMT.Service.getBidTrue(adZoneKey),
+        bidObj,
+        data = placementMap[adZoneKey];
+
+      if (bid > 0) {
+        bidObj = bidfactory.createBid(1);
+        bidObj.cpm = bid;
+        bidObj.ad = W.CMT.Service.getAd(adZoneKey);
+        bidObj.width = data.w;
+        bidObj.height = data.h;
+        // bidObj.floor = W.CMT.Service.getSecondPrice(adZoneKey);
+        // bidObj.finalizeAd = finalizeAd;
+      } else {
+        bidObj = bidfactory.createBid(2);
+      }
+      bidObj.bidderCode = COX_BIDDER_CODE;
+      bidmanager.addBidResponse(data.p, bidObj);
+    }
+  }
+
+  function _getCoxLite() {
+    var CMT = {};
+
+    CMT.Util = (function () {
+      return {
+
+        getRand: function getRand() {
+          return Math.round(Math.random() * 100000000);
+        },
+
+        encodeUriObject: function encodeUriObject(obj) {
+          return encodeURIComponent(JSON.stringify(obj));
+        },
+
+        extractUrlInfo: function extractUrlInfo() {
+          function f2(callback) {
+            try {
+              if (!W.location.ancestorOrigins) return;
+              for (var i = 0, len = W.location.ancestorOrigins.length; len > i; i++) {
+                callback.call(null, W.location.ancestorOrigins[i], i);
+              }
+            } catch (ignore) { }
+            return [];
+          }
+
+          function f1(callback) {
+            var oneWindow,
+              infoArray = [];
+            do {
+              try {
+                oneWindow = oneWindow ? oneWindow.parent : W;
+                callback.call(null, oneWindow, infoArray);
+              } catch (t) {
+                infoArray.push({
+                  referrer: null,
+                  location: null,
+                  isTop: !1
+                });
+                return infoArray;
+              }
+            } while (oneWindow !== W.top);
+            return infoArray;
+          }
+          var allInfo = f1(function (oneWindow, infoArray) {
+            try {
+              infoArray.push({ referrer: oneWindow.document.referrer || null, location: oneWindow.location.href || null, isTop: oneWindow === W.top });
+            } catch (e) {
+              infoArray.push({ referrer: null, location: null, isTop: oneWindow === W.top });
+            }
+          });
+          f2(function (n, r) {
+            allInfo[r].ancestor = n;
+          });
+          for (var t = '', e = !1, i = allInfo.length - 1, l = allInfo.length - 1; l >= 0; l--) {
+            t = allInfo[l].location;
+            if (!t && l > 0) {
+              t = allInfo[l - 1].referrer;
+              if (!t) t = allInfo[l - 1].ancestor;
+              if (t) {
+                e = W.location.ancestorOrigins ? !0 : l === allInfo.length - 1 && allInfo[allInfo.length - 1].isTop;
+                break;
+              }
+            }
+          } return { url: t, isTop: e, depth: i };
+        },
+
+        srTestCapabilities: function srTestCapabilities() {
+          var plugins = navigator.plugins,
+            flashVer = -1,
+            sf = 'Shockwave Flash';
+
+          if (plugins && plugins.length > 0) {
+            if (plugins[sf + ' 2.0'] || plugins[sf]) {
+              var swVer2 = plugins[sf + ' 2.0'] ? ' 2.0' : '';
+              var flashDescription = plugins[sf + swVer2].description;
+              flashVer = flashDescription.split(' ')[2].split('.')[0];
+            }
+          }
+          if (flashVer > 4) return 15; else return 7;
+        }
+
+      };
+    }());
+
+    // Ad calling functionality
+    CMT.Service = (function () {
+      // Closure variables shared by the service functions
+      var U = CMT.Util;
+
+      return {
+
+        buildSrc: function buildSrc(tag, env) {
+          var src = (document.location.protocol === 'https:' ? 'https://' : 'http://') + (!env || env === 'PRD' ? '' : env === 'PPE' ? 'ppe-' : env === 'STG' ? 'staging-' : '') + 'ad.afy11.net/ad' + '?mode=11' + '&ct=' + U.srTestCapabilities() + '&nif=0' + '&sf=0' + '&sfd=0' + '&ynw=0' + '&rand=' + U.getRand() + '&hb=1' + '&rk1=' + U.getRand() + '&rk2=' + new Date().valueOf() / 1000;
+
+          // Make sure we don't have a response object...
+          delete tag.response;
+
+          // Extracted url info...
+          var urlInfo = U.extractUrlInfo();
+          tag.pageUrl = urlInfo.url;
+          tag.puTop = urlInfo.isTop;
+
+          // Attach the serialized tag to our string
+          src += '&ab=' + U.encodeUriObject(tag);
+
+          return src;
+        },
+
+        getAd: function (zoneKey) {
+          if (!zoneKey) return;
+
+          return this._getData(zoneKey, 'ad') + (this._getResponse().tpCookieSync || ''); // ...also append cookie sync if present
+        },
+
+        // getSecondPrice: function getSecondPrice(zoneKey) {
+        //  if (zoneKey.substring(0, 2) !== 'as') zoneKey = 'as' + zoneKey;
+        //  var bid = this.getBidTrue(zoneKey),
+        //    floor = this._getData(zoneKey, 'floor');
+
+        //  // If no floor, just set it to 80% of the bid
+        //  if (!floor) floor = bid * 0.80;
+
+        //  // Adjust the floor if it's too high...it needs to always be lower
+        //  if (floor >= bid) {
+        //    floor = floor * 0.80; // Take off 20% to account for possible non-adjusted 2nd highest bid
+
+        //    // If it's still too high, just take 80% to 90% of the bid
+        //    if (floor >= bid) floor = bid * ((Math.random() * 10) + 80) / 100;
+        //  }
+        //  return Math.round(floor * 100) / 100;
+        // },
+
+        // setAuctionPrice: function setAuctionPrice(ad, bid) {
+        //  return ad ? ad.replace('${AUCTION_PRICE}', bid) : ad;
+        // },
+
+        getBidTrue: function getBidTrue(zoneKey) {
+          return Math.round(this._getData(zoneKey, 'price') * 100) / 100;
+        },
+
+        _getData: function (zoneKey, field) {
+          var response = this._getResponse(),
+            zoneResponseData = response.zones ? response.zones[zoneKey] : {};
+
+          return (zoneResponseData || {})[field] || null;
+        },
+
+        _getResponse: function () {
+          var tag = W.cdsTag;
+          return (tag && tag.response) ? tag.response : {};
+        },
+      };
+    }());
+
+    return CMT;
+  }
+
+  // Export the callBids function, so that prebid.js can execute this function
+  // when the page asks to send out bid requests.
+  return {
+    callBids: _callBids,
+  };
+};
+
+module.exports = CoxAdapter;
diff --git a/test/spec/adapters/cox_spec.js b/test/spec/adapters/cox_spec.js
new file mode 100644
index 00000000000..3f1342230db
--- /dev/null
+++ b/test/spec/adapters/cox_spec.js
@@ -0,0 +1,121 @@
+import Adapter from 'src/adapters/cox';
+import bidManager from 'src/bidmanager';
+import adLoader from 'src/adloader';
+import utils from 'src/utils';
+import {expect} from 'chai';
+
+describe('CoxAdapter', () => {
+  let adapter;
+  let loadScriptStub;
+  let addBidResponseSpy;
+
+  let emitScript = (script) => {
+    let node = document.createElement('script');
+    node.type = 'text/javascript';
+    node.appendChild(document.createTextNode(script));
+    document.getElementsByTagName('head')[0].appendChild(node);
+  };
+
+  beforeEach(() => {
+    adapter = new Adapter();
+    addBidResponseSpy = sinon.spy(bidManager, 'addBidResponse');
+  });
+
+  afterEach(() => {
+    loadScriptStub.restore();
+    addBidResponseSpy.restore();
+  });
+
+  describe('response handling', () => {
+    const normalResponse = 'cdsTag.__callback__({"zones":{"as2000005991707":{"ad" : "<h1>FOO<\/h1>","uid" : "","price" : 1.51,"floor" : 0,}},"tpCookieSync":"<h1>FOOKIE<\/h1>"})';
+    const zeroPriceResponse = 'cdsTag.__callback__({"zones":{"as2000005991707":{"ad" : "<h1>DEFAULT FOO<\/h1>","uid" : "","price" : 0,"floor" : 0,}},"tpCookieSync":"<h1>FOOKIE<\/h1>"})';
+    const incompleteResponse = 'cdsTag.__callback__({"zones":{},"tpCookieSync":"<h1>FOOKIE<\/h1>"})';
+
+    const oneBidConfig = {
+      bidderCode: 'cox',
+      bids: [{
+        bidder: 'cox',
+        placementCode: 'FOO456789',
+        sizes: [300, 250],
+        params: { size: '300x250', id: 2000005991707, siteId: 2000100948180, env: 'PROD' },
+      }]
+    };
+
+    // ===== 1
+    it('should provide a correctly populated Bid given a valid response', () => {
+      loadScriptStub = sinon.stub(adLoader, 'loadScript', () => { emitScript(normalResponse); })
+
+      adapter.callBids(oneBidConfig);
+
+      let bid = addBidResponseSpy.args[0][1];
+      expect(bid.cpm).to.equal(1.51);
+      expect(bid.ad).to.be.a('string');
+      expect(bid.bidderCode).to.equal('cox');
+    });
+
+    // ===== 2
+    it('should provide an empty Bid given a zero-price response', () => {
+      loadScriptStub = sinon.stub(adLoader, 'loadScript', () => { emitScript(zeroPriceResponse); })
+
+      adapter.callBids(oneBidConfig);
+
+      let bid = addBidResponseSpy.args[0][1];
+      expect(bid.cpm).to.not.be.ok
+      expect(bid.ad).to.not.be.ok;
+    });
+
+    // ===== 3
+    it('should provide an empty Bid given an incomplete response', () => {
+      loadScriptStub = sinon.stub(adLoader, 'loadScript', () => { emitScript(incompleteResponse); })
+
+      adapter.callBids(oneBidConfig);
+
+      let bid = addBidResponseSpy.args[0][1];
+      expect(bid.cpm).to.not.be.ok
+      expect(bid.ad).to.not.be.ok;
+    });
+
+    // ===== 4
+    it('should not provide a Bid given no response', () => {
+      loadScriptStub = sinon.stub(adLoader, 'loadScript', () => { emitScript(''); });
+
+      adapter.callBids(oneBidConfig);
+
+      expect(addBidResponseSpy.callCount).to.equal(0);
+    });
+  });
+
+  describe('request generation', () => {
+    const missingBidsConfig = {
+      bidderCode: 'cox',
+      bids: null,
+    };
+    const missingParamsConfig = {
+      bidderCode: 'cox',
+      bids: [{
+        bidder: 'cox',
+        placementCode: 'FOO456789',
+        sizes: [300, 250],
+        params: null,
+      }]
+    };
+
+    // ===== 5
+    it('should not make an ad call given missing bids in config', () => {
+      loadScriptStub = sinon.stub(adLoader, 'loadScript');
+
+      adapter.callBids(missingBidsConfig);
+
+      expect(loadScriptStub.callCount).to.equal(0);
+    });
+
+    // ===== 6
+    it('should not make an ad call given missing params in config', () => {
+      loadScriptStub = sinon.stub(adLoader, 'loadScript');
+
+      adapter.callBids(missingParamsConfig);
+
+      expect(loadScriptStub.callCount).to.equal(0);
+    });
+  });
+});