Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden of behavioral disclosure. 'Execute a MySQL query' implies a write operation could occur, but it doesn't specify whether this tool is read-only, destructive, requires authentication, has rate limits, or what happens on errors. For a database tool with zero annotation coverage, this is a significant gap in transparency.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.