Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
There are no annotations, so the description must fully disclose behavioral traits. 'Rename or move' implies mutation but provides no details about side effects, such as whether references are updated, whether paths must be within the same directory, or whether the operation is reversible. This is a significant gap for a mutation tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.