Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. It discloses that deletion affects three systems (Git, search index, knowledge graph), which adds transparency. However, it does not mention whether the operation is reversible, requires permissions, or has cascading effects on related data. This is adequate but not thorough.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.