Update pages/home/glossary.mdx

Co-authored-by: Nate Barbettini <nate@arcade.dev>

Author: evantahler

pages/home/glossary.mdx

@@ -146,7 +146,7 @@ The 'Arcade client' is the SDK that you use to interact with the Arcade platform
 
 ### Arcade Engine
 
-The 'Arcade engine' is the core of the Arcade platform.  It is responsible for routing tool execution requests to the correct worker, and for managing the lifecycle of tool executions.  It is also responsible for checking the user's permissions to call a tool, and for injecting secrets and other information into the tool call.
+The Arcade Engine is the core of the Arcade platform.  It is responsible for routing tool execution requests to the correct worker, managing the lifecycle of tool executions, and for enforcing security and authorization decisions.
 
 The Arcade Engine is also responsible for the OAuth flow for your agent's users.  This includes granting and elevating permissions and keeping tokens fresh.