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 retrieves recent commit history, implying a read-only operation, but lacks details on permissions, rate limits, pagination, or what 'recent' means (e.g., time-based vs. count-based). This leaves significant gaps for safe and effective use.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.