diff --git a/stackoverflow/stackoverflow.go b/stackoverflow/stackoverflow.go
new file mode 100644
index 0000000..9541d2b
--- /dev/null
+++ b/stackoverflow/stackoverflow.go
@@ -0,0 +1,16 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package stackoverflow provides constants for using OAuth2 to access stackoverflow.
+package stackoverflow // import "golang.org/x/oauth2/stackoverflow"
+
+import (
+	"golang.org/x/oauth2"
+)
+
+// Endpoint is Stackoverflow's OAuth 2.0 endpoint.
+var Endpoint = oauth2.Endpoint{
+	AuthURL:  "https://stackoverflow.com/oauth",
+	TokenURL: "https://stackoverflow.com/oauth/access_token",
+}