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, but it only says what the tool does, not how it behaves. It does not mention whether the material is auto-assigned, what default node setup is created, or whether this is destructive to an existing material.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.