diff --git a/pkg/api/errors/doc.go b/pkg/api/errors/doc.go
new file mode 100644
index 00000000000..f9697e349bf
--- /dev/null
+++ b/pkg/api/errors/doc.go
@@ -0,0 +1,18 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package errors provides detailed error types for api field validation.
+package errors
diff --git a/pkg/cloudprovider/fake/doc.go b/pkg/cloudprovider/fake/doc.go
new file mode 100644
index 00000000000..5b048a7deeb
--- /dev/null
+++ b/pkg/cloudprovider/fake/doc.go
@@ -0,0 +1,19 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package fake_cloud is a test-double implementation of cloudprovider
+// Interface, TCPLoadBalancer and Instances. It is useful for testing.
+package fake_cloud
diff --git a/pkg/cloudprovider/gce/doc.go b/pkg/cloudprovider/gce/doc.go
new file mode 100644
index 00000000000..b9c524602e8
--- /dev/null
+++ b/pkg/cloudprovider/gce/doc.go
@@ -0,0 +1,19 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package gce_cloud is an implementation of Interface, TCPLoadBalancer
+// and Instances for Google Compute Engine.
+package gce_cloud
diff --git a/pkg/cloudprovider/vagrant/doc.go b/pkg/cloudprovider/vagrant/doc.go
new file mode 100644
index 00000000000..a5116eea707
--- /dev/null
+++ b/pkg/cloudprovider/vagrant/doc.go
@@ -0,0 +1,19 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package vagrant_cloud is an implementation of Interface, TCPLoadBalancer
+// and Instances for developer managed Vagrant cluster.
+package vagrant_cloud
diff --git a/pkg/kubelet/config/doc.go b/pkg/kubelet/config/doc.go
new file mode 100644
index 00000000000..b87406154fb
--- /dev/null
+++ b/pkg/kubelet/config/doc.go
@@ -0,0 +1,18 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package config implements the pod configuration readers.
+package config
diff --git a/pkg/registry/controller/doc.go b/pkg/registry/controller/doc.go
new file mode 100644
index 00000000000..a7f831f1014
--- /dev/null
+++ b/pkg/registry/controller/doc.go
@@ -0,0 +1,19 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package controller provides Registry interface and it's RESTStorage
+// implementation for storing ReplicationController api objects.
+package controller
diff --git a/pkg/registry/endpoint/doc.go b/pkg/registry/endpoint/doc.go
new file mode 100644
index 00000000000..316913e92dc
--- /dev/null
+++ b/pkg/registry/endpoint/doc.go
@@ -0,0 +1,19 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package endpoint provides Registry interface and it's RESTStorage
+// implementation for storing Endpoint api objects.
+package endpoint
diff --git a/pkg/registry/etcd/doc.go b/pkg/registry/etcd/doc.go
new file mode 100644
index 00000000000..79d6f587bce
--- /dev/null
+++ b/pkg/registry/etcd/doc.go
@@ -0,0 +1,19 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package etcd provides etcd backend implementation for storing
+// PodRegistry, ControllerRegistry and ServiceRegistry api objects.
+package etcd
diff --git a/pkg/registry/minion/doc.go b/pkg/registry/minion/doc.go
new file mode 100644
index 00000000000..b821ced0b48
--- /dev/null
+++ b/pkg/registry/minion/doc.go
@@ -0,0 +1,19 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package minion provides Registry interface and implementation
+// for storing Minions.
+package minion
diff --git a/pkg/registry/pod/doc.go b/pkg/registry/pod/doc.go
new file mode 100644
index 00000000000..44b244de976
--- /dev/null
+++ b/pkg/registry/pod/doc.go
@@ -0,0 +1,19 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package pod provides Registry interface and it's RESTStorage
+// implementation for storing Pod api objects.
+package pod
diff --git a/pkg/registry/registrytest/doc.go b/pkg/registry/registrytest/doc.go
new file mode 100644
index 00000000000..a5dc9321bf6
--- /dev/null
+++ b/pkg/registry/registrytest/doc.go
@@ -0,0 +1,19 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package registrytest provides tests for Registry implementations
+// for storing Minions, Pods, Schedulers and Services.
+package registrytest
diff --git a/pkg/registry/service/doc.go b/pkg/registry/service/doc.go
new file mode 100644
index 00000000000..bd503f2b0e1
--- /dev/null
+++ b/pkg/registry/service/doc.go
@@ -0,0 +1,19 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package service provides Registry interface and it's RESTStorage
+// implementation for storing Service api objects.
+package service
diff --git a/pkg/service/doc.go b/pkg/service/doc.go
new file mode 100644
index 00000000000..72faf1ea8d7
--- /dev/null
+++ b/pkg/service/doc.go
@@ -0,0 +1,19 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package service provides EndpointController implementation
+// to manage and sync service endpoints.
+package service