Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden for behavioral disclosure but provides minimal information. 'Add a person to an automation' implies a mutation/write operation, but doesn't specify whether this is idempotent, what permissions are required, what happens if the person is already in the automation, what side effects occur, or what the response contains. The description lacks critical behavioral context for a mutation tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.