Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description adds a definition of a goal (target value + comparison for a saved metric query), which gives some behavioral context beyond the tool name. Annotations already indicate it is not read-only or destructive, and the description confirms it is a creation operation. However, it does not disclose potential side effects (e.g., impact on reports), permission requirements, or whether the goal is immediately persisted. With minimal annotation coverage, the description carries the responsibility for these details but fails to provide them.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.