diff --git a/resource.go b/resource.go
index c5cb9dab..5695669f 100644
--- a/resource.go
+++ b/resource.go
@@ -1,3 +1,19 @@
+/*
+Copyright 2016 The Fission Authors.
+
+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 fission
 
 func (f Function) Key() string {
@@ -11,3 +27,7 @@ func (e Environment) Key() string {
 func (ht HTTPTrigger) Key() string {
 	return ht.Metadata.Name
 }
+
+func (w Watch) Key() string {
+	return w.Metadata.Name
+}
diff --git a/types.go b/types.go
index f8325b4d..044a5b00 100644
--- a/types.go
+++ b/types.go
@@ -53,6 +53,20 @@ type (
 		Function   Metadata `json:"function"`
 	}
 
+	// Watch is a specification of Kubernetes watch along with a URL to post events to.
+	Watch struct {
+		Metadata `json:"metadata"`
+
+		Namespace     string `json:"namespace"`
+		ObjType       string `json:"objtype"`
+		LabelSelector string `json:"labelselector"`
+		FieldSelector string `json:"fieldselector"`
+
+		Function Metadata `json:"function"`
+
+		Url string `json:"url"` // POST request made to this URL.
+	}
+
 	// Errors returned by the Fission API.
 	Error struct {
 		Code    errorCode `json:"code"`
@@ -69,4 +83,5 @@ const (
 	ErrorNameExists
 	ErrorInvalidArgument
 	ErrorNoSpace
+	ErrorNotImplmented
 )