diff --git a/config/example.json b/config/example.json
index e5ac3aaf7b..8487b5159d 100644
--- a/config/example.json
+++ b/config/example.json
@@ -12,6 +12,7 @@
     ],
     "externs": [
       "externs/bingmaps.js",
+      "externs/cartodb.js",
       "externs/bootstrap.js",
       "externs/closure-compiler.js",
       "externs/esrijson.js",
diff --git a/config/examples-all.json b/config/examples-all.json
index 40d452b4b3..3eee28d504 100644
--- a/config/examples-all.json
+++ b/config/examples-all.json
@@ -13,6 +13,7 @@
     "externs": [
       "externs/bingmaps.js",
       "externs/bootstrap.js",
+      "externs/cartodb.js",
       "externs/closure-compiler.js",
       "externs/esrijson.js",
       "externs/example.js",
diff --git a/config/ol.json b/config/ol.json
index 37039fac71..eb542af685 100644
--- a/config/ol.json
+++ b/config/ol.json
@@ -4,6 +4,7 @@
   "compile": {
     "externs": [
       "externs/bingmaps.js",
+      "externs/cartodb.js",
       "externs/closure-compiler.js",
       "externs/esrijson.js",
       "externs/geojson.js",
diff --git a/externs/cartodb.js b/externs/cartodb.js
new file mode 100644
index 0000000000..7d3c15e029
--- /dev/null
+++ b/externs/cartodb.js
@@ -0,0 +1,34 @@
+/**
+ * @externs
+ */
+
+
+
+/**
+ * @constructor
+ */
+var CartoDBLayerInfo = function() {};
+
+
+/**
+ * @type {string}
+ */
+CartoDBLayerInfo.prototype.layergroupid;
+
+
+/**
+ * @type {string}
+ */
+CartoDBLayerInfo.prototype.updated_at;
+
+
+/**
+ * @type {Object}
+ */
+CartoDBLayerInfo.prototype.metadata;
+
+
+/**
+ * @type {{http: string, https: string}}
+ */
+CartoDBLayerInfo.prototype.cdn_url;
diff --git a/externs/olx.js b/externs/olx.js
index 8348707365..30907968f4 100644
--- a/externs/olx.js
+++ b/externs/olx.js
@@ -6210,7 +6210,8 @@ olx.source.XYZOptions.prototype.urls;
 olx.source.XYZOptions.prototype.wrapX;
 
 /**
- * @typedef {{attributions: (Array.<ol.Attribution>|undefined),
+ * @typedef {{attributions: (olx.source.AttributionOption|undefined),
+ *     cacheSize: (number|undefined),
  *     crossOrigin: (null|string|undefined),
  *     logo: (string|olx.LogoOptions|undefined),
  *     projection: ol.proj.ProjectionLike,
@@ -6219,7 +6220,7 @@ olx.source.XYZOptions.prototype.wrapX;
  *     wrapX: (boolean|undefined),
  *     config: (Object|undefined),
  *     map: (string|undefined),
- *     account: (string|undefined)}}
+ *     account: string}}
  * @api
  */
 olx.source.CartoDBOptions;
@@ -6227,12 +6228,20 @@ olx.source.CartoDBOptions;
 
 /**
  * Attributions.
- * @type {Array.<ol.Attribution>|undefined}
+ * @type {olx.source.AttributionOption|undefined}
  * @api stable
  */
 olx.source.CartoDBOptions.prototype.attributions;
 
 
+/**
+ * Cache size. Default is `2048`.
+ * @type {number|undefined}
+ * @api
+ */
+olx.source.CartoDBOptions.prototype.cacheSize;
+
+
 /**
  * The `crossOrigin` attribute for loaded images.  Note that you must provide a
  * `crossOrigin` value if you are using the WebGL renderer or if you want to
@@ -6269,6 +6278,14 @@ olx.source.CartoDBOptions.prototype.projection;
 olx.source.CartoDBOptions.prototype.maxZoom;
 
 
+/**
+ * Minimum zoom.
+ * @type {number|undefined}
+ * @api
+ */
+olx.source.CartoDBOptions.prototype.minZoom;
+
+
 /**
  * Whether to wrap the world horizontally. Default is `true`.
  * @type {boolean|undefined}
@@ -6279,10 +6296,10 @@ olx.source.CartoDBOptions.prototype.wrapX;
 
 /**
  * If using anonymous maps, the CartoDB config to use. See
- * {@link http://docs.cartodb.com/cartodb-platform/maps-api.html#anonymous-maps}
+ * {@link http://docs.cartodb.com/cartodb-platform/maps-api/anonymous-maps/}
  * for more detail.
  * If using named maps, a key-value lookup with the template parameters.
- * See {@link http://docs.cartodb.com/cartodb-platform/maps-api.html#named-maps}
+ * See {@link http://docs.cartodb.com/cartodb-platform/maps-api/named-maps/}
  * for more detail.
  * @type {Object|undefined}
  * @api
@@ -6292,7 +6309,7 @@ olx.source.CartoDBOptions.prototype.config;
 
 /**
  * If using named maps, this will be the name of the template to load.
- * See {@link http://docs.cartodb.com/cartodb-platform/maps-api.html#named-maps}
+ * See {@link http://docs.cartodb.com/cartodb-platform/maps-api/named-maps/}
  * for more detail.
  * @type {string|undefined}
  * @api
diff --git a/src/ol/source/cartodb.js b/src/ol/source/cartodb.js
index afb9c8c262..9ff67ac463 100644
--- a/src/ol/source/cartodb.js
+++ b/src/ol/source/cartodb.js
@@ -14,12 +14,41 @@ goog.require('ol.source.XYZ');
  * @api
  */
 ol.source.CartoDB = function(options) {
+
+  /**
+   * @type {string}
+   * @private
+   */
   this.account_ = options.account;
+
+  /**
+   * @type {string}
+   * @private
+   */
   this.mapId_ = options.map || '';
+
+  /**
+   * @type {Object}
+   * @private
+   */
   this.config_ = options.config || {};
+
+  /**
+   * @type {!Object.<string, CartoDBLayerInfo>}
+   * @private
+   */
   this.templateCache_ = {};
-  delete options.map;
-  goog.base(this, options);
+
+  goog.base(this, {
+    attributions: options.attributions,
+    cacheSize: options.cacheSize,
+    crossOrigin: options.crossOrigin,
+    logo: options.logo,
+    maxZoom: options.maxZoom !== undefined ? options.maxZoom : 18,
+    minZoom: options.minZoom,
+    projection: options.projection,
+    wrapX: options.wrapX
+  });
   this.initializeMap_();
 };
 goog.inherits(ol.source.CartoDB, ol.source.XYZ);
@@ -99,7 +128,7 @@ ol.source.CartoDB.prototype.handleInitResponse_ = function(paramHash, event) {
   if (client.status >= 200 && client.status < 300) {
     var response;
     try {
-      response = /** @type {Object} */(JSON.parse(client.responseText));
+      response = /** @type {CartoDBLayerInfo} */(JSON.parse(client.responseText));
     } catch (err) {
       this.setState(ol.source.State.ERROR);
       return;
@@ -111,6 +140,7 @@ ol.source.CartoDB.prototype.handleInitResponse_ = function(paramHash, event) {
   }
 };
 
+
 /**
  * @private
  * @param {Event} event Event.
@@ -119,14 +149,14 @@ ol.source.CartoDB.prototype.handleInitError_ = function(event) {
   this.setState(ol.source.State.ERROR);
 }
 
+
 /**
  * Apply the new tile urls returned by carto db
- * @param {Object} data Result of carto db call.
+ * @param {CartoDBLayerInfo} data Result of carto db call.
  * @private
  */
 ol.source.CartoDB.prototype.applyTemplate_ = function(data) {
-  var layerId = data['layergroupid'];
-  var tilesUrl = 'https://' + data['cdn_url']['https'] + '/' + this.account_ +
-      '/api/v1/map/' + layerId + '/{z}/{x}/{y}.png';
+  var tilesUrl = 'https://' + data.cdn_url.https + '/' + this.account_ +
+      '/api/v1/map/' + data.layergroupid + '/{z}/{x}/{y}.png';
   this.setUrl(tilesUrl);
 };
diff --git a/test/spec/ol/source/cartodbsource.test.js b/test/spec/ol/source/cartodbsource.test.js
index 9f62f6981c..201d276d84 100644
--- a/test/spec/ol/source/cartodbsource.test.js
+++ b/test/spec/ol/source/cartodbsource.test.js
@@ -8,7 +8,7 @@ describe('ol.source.CartoDB', function() {
   describe('constructor', function() {
     it('returns a CartoDB source', function() {
       var source = new ol.source.CartoDB({
-        map: 'example',
+        account: 'documentation',
         config: {}
       });
       expect(source).to.be.a(ol.source.XYZ);