diff --git a/plugins/auth/README.md b/plugins/auth/README.md
index 789ae670b4..440d7d294a 100644
--- a/plugins/auth/README.md
+++ b/plugins/auth/README.md
@@ -10,3 +10,7 @@ This plugin is designed to work with the `@backstage/plugin-auth-backend` packag
 # From your Backstage app directory
 yarn --cwd packages/app add @backstage/plugin-auth
 ```
+
+## Usage
+
+The plugin provides the route `/oauth2/authorize/:sessionId` for approving of oauth2 sessions for clients. You should see an approval flow for any sessions created through the `auth-backend`.