Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It states the tool deletes nodes, implying a destructive mutation, but doesn't mention whether deletions are permanent, reversible, require specific permissions, or have rate limits. It also doesn't describe the response format or error handling, leaving significant gaps for a destructive operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.