diff --git a/gulpfile.js b/gulpfile.js
index 1b39e282a8..b979007a35 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -25,6 +25,7 @@ var pubget = require('./tools/build/pubget');
 var linknodemodules = require('./tools/build/linknodemodules');
 var pubbuild = require('./tools/build/pubbuild');
 var dartanalyzer = require('./tools/build/dartanalyzer');
+var dartapidocs = require('./tools/build/dartapidocs');
 var jsserve = require('./tools/build/jsserve');
 var pubserve = require('./tools/build/pubserve');
 var karma = require('karma');
@@ -250,6 +251,11 @@ gulp.task('build/analyze.ddc.dart', dartanalyzer(gulp, gulpPlugins, {
   use_ddc: true
 }));
 
+gulp.task('build/check.apidocs.dart', dartapidocs(gulp, gulpPlugins, {
+  dest: CONFIG.dest.dart,
+  command: DART_SDK.DARTDOCGEN
+}));
+
 // ------------
 // pubbuild
 // WARNING: this task is very slow (~15m as of July 2015)
@@ -843,6 +849,7 @@ gulp.task('build.dart', function(done) {
     'build/packages.dart',
     'build/pubspec.dart',
     'build/analyze.dart',
+    'build/check.apidocs.dart',
     'build.dart.material.css',
     sequenceComplete(done)
   );
diff --git a/modules/angular2/core.ts b/modules/angular2/core.ts
index efbb7ddd13..4ac6b3f0a7 100644
--- a/modules/angular2/core.ts
+++ b/modules/angular2/core.ts
@@ -23,7 +23,6 @@ export {LifeCycle} from 'angular2/src/core/life_cycle/life_cycle';
 
 export {ElementRef} from 'angular2/src/core/compiler/element_ref';
 export {TemplateRef} from 'angular2/src/core/compiler/template_ref';
-export {RenderElementRef} from 'angular2/src/render/api';
 export {ViewRef, HostViewRef, ProtoViewRef} from 'angular2/src/core/compiler/view_ref';
 export {ViewContainerRef} from 'angular2/src/core/compiler/view_container_ref';
 export {ComponentRef} from 'angular2/src/core/compiler/dynamic_component_loader';
diff --git a/modules/angular2/src/test_lib/spies.dart b/modules/angular2/src/test_lib/spies.dart
index 893fac9fc6..d0836acd8f 100644
--- a/modules/angular2/src/test_lib/spies.dart
+++ b/modules/angular2/src/test_lib/spies.dart
@@ -4,27 +4,27 @@ import 'package:angular2/src/change_detection/change_detection.dart';
 import 'package:angular2/di.dart';
 import './test_lib.dart';
 
-@proxy()
+@proxy
 class SpyChangeDetector extends SpyObject implements ChangeDetector {
   noSuchMethod(m) => super.noSuchMethod(m);
 }
 
-@proxy()
+@proxy
 class SpyProtoChangeDetector extends SpyObject implements ProtoChangeDetector {
   noSuchMethod(m) => super.noSuchMethod(m);
 }
 
-@proxy()
+@proxy
 class SpyPipe extends SpyObject implements Pipe {
   noSuchMethod(m) => super.noSuchMethod(m);
 }
 
-@proxy()
+@proxy
 class SpyDependencyProvider extends SpyObject implements DependencyProvider {
   noSuchMethod(m) => super.noSuchMethod(m);
 }
 
-@proxy()
+@proxy
 class SpyChangeDetectorRef extends SpyObject implements ChangeDetectorRef {
   noSuchMethod(m) => super.noSuchMethod(m);
 }
diff --git a/tools/build/dart.js b/tools/build/dart.js
index 7fe991809e..923f9ef1b1 100644
--- a/tools/build/dart.js
+++ b/tools/build/dart.js
@@ -8,6 +8,7 @@ module.exports.detect = function(gulp) {
     if (process.platform === 'win32') {
       DART_SDK = {
         ANALYZER: 'dartanalyzer.bat',
+        DARTDOCGEN: 'dartdocgen.bat',
         DARTFMT: 'dartfmt.bat',
         PUB: 'pub.bat',
         VM: 'dart.exe'
@@ -15,6 +16,7 @@ module.exports.detect = function(gulp) {
     } else {
       DART_SDK = {
         ANALYZER: 'dartanalyzer',
+        DARTDOCGEN: 'dartdocgen',
         DARTFMT: 'dartfmt',
         PUB: 'pub',
         VM: 'dart'
diff --git a/tools/build/dartapidocs.js b/tools/build/dartapidocs.js
new file mode 100644
index 0000000000..5efa4172c6
--- /dev/null
+++ b/tools/build/dartapidocs.js
@@ -0,0 +1,44 @@
+var Q = require('q');
+var readline = require('readline');
+var spawn = require('child_process').spawn;
+var util = require('./util');
+
+module.exports = function(gulp, plugins, config) {
+  return function() {
+    return util.forEachSubDirSequential(config.dest, function(dir) {
+      var defer = Q.defer();
+      var done = defer.makeNodeResolver();
+
+      var supportedModules = [
+        'dist/dart/angular2',
+        // TODO: blocked by https://github.com/angular/angular/issues/3518
+        // 'dist/dart/angular2_material',
+        'dist/dart/benchpress'
+      ];
+
+      if (supportedModules.indexOf(dir) === -1) {
+        done();
+      } else {
+        console.log('INFO: running dartdocgen for ', dir);
+
+        var stream = spawn(config.command, ['.'], {
+          stdio: [process.stdin, process.stdout, process.stderr],
+          cwd: dir
+        });
+
+        stream.on('exit', function(code) {
+          if (code !== 0) {
+            done('ERROR: dartdocgen exited with non-zero status ' + code);
+          } else {
+            done();
+          }
+        });
+
+        stream.on('error', function(e) {
+          done('ERROR: dartdocgen reported error: ' + e);
+        });
+      }
+      return defer.promise;
+    });
+  };
+};