diff --git a/oauth3.core.js b/oauth3.core.js
index 3396a65..ac9249e 100644
--- a/oauth3.core.js
+++ b/oauth3.core.js
@@ -458,6 +458,7 @@
           return OAUTH3.PromiseA.resolve(OAUTH3.hooks.session.set(providerUri, oldSession));
         }
       , check: function (preq, opts) {
+          opts = opts || {};
           if (!preq.session) {
             return OAUTH3.PromiseA.resolve(null);
           }
@@ -954,6 +955,13 @@
         );
       }
     }
+  , api: function (providerUri, opts) {
+      if (!OAUTH3.api[opts.api]) {
+        throw new Error("No API for '" + providerUri + "'");
+      }
+
+      return OAUTH3.api[opts.api](providerUri, opts);
+    }
   };
   OAUTH3.login = OAUTH3.implicitGrant;
 
@@ -1031,7 +1039,8 @@
     , session: function () {
         return JSON.parse(JSON.stringify(OAUTH3.hooks.session._getCached(this._providerUri)));
       }
-    , request: function (preq) {
+    , request: function (preq, opts) {
+        opts = opts || {};
         preq.client_uri = this._clientUri;
         preq.client_id = this._clientUri;
         preq.method = preq.method || 'GET';
@@ -1040,7 +1049,7 @@
         }
         // TODO maybe use a baseUrl from the directives file?
         preq.url = OAUTH3.url.resolve(this._providerUri, preq.url);
-        return OAUTH3.request(preq);
+        return OAUTH3.request(preq, opts);
       }
     , logout: function (opts) {
         opts = opts || {};
@@ -1050,6 +1059,12 @@
 
         return OAUTH3.logout(this._providerUri, opts);
       }
+    , api: function (api, opts) {
+        opts = opts || {};
+        opts.api = api;
+        opts.session = OAUTH3.hooks.session._getCached(this._providerUri);
+        OAUTH3.api(this._providerUri, opts);
+      }
     };
     result.authenticate = result.login;
     result.authorize = result.login;
diff --git a/oauth3.domains.js b/oauth3.domains.js
new file mode 100644
index 0000000..d9320ff
--- /dev/null
+++ b/oauth3.domains.js
@@ -0,0 +1,19 @@
+;(function (exports) {
+'use strict';
+
+var OAUTH3 = exports.OAUTH3 = exports.OAUTH3 || require('./oauth3.core.js').OAUTH3;
+
+OAUTH3.api['domains.list'] = function (providerUri, opts) {
+  var session = opts.session;
+
+  return OAUTH3.request({
+    method: 'GET'
+  , url: OAUTH3.url.normalize(providerUri)
+      + '/api/com.daplie.domains/accounts/' + session.token.sub + '/registrations'
+  , session: session
+  }).then(function (res) {
+    return res.data;
+  });
+};
+
+}('undefined' !== typeof exports ? exports : window));
diff --git a/oauth3.issuer.js b/oauth3.issuer.js
index 80e2462..7bd137a 100644
--- a/oauth3.issuer.js
+++ b/oauth3.issuer.js
@@ -1,7 +1,7 @@
 ;(function (exports) {
 'use strict';
 
-var OAUTH3 = exports.OAUTH3 = exports.OAUTH3 || require('./oauth3.implicit.js').OAUTH3;
+var OAUTH3 = exports.OAUTH3 = exports.OAUTH3 || require('./oauth3.core.js').OAUTH3;
 
 OAUTH3.query.parse = function (search) {
   // parse a query or a hash
diff --git a/oauth3.ng.js b/oauth3.ng.js
index b5fdefb..97f0b96 100644
--- a/oauth3.ng.js
+++ b/oauth3.ng.js
@@ -2,7 +2,7 @@
 'use strict';
 
 angular
-  .module('oauth3', [])
+  .module('org.oauth3', [])
   .service('Oauth3', [
     '$timeout'
   , '$q'