Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no behavioral annotations other than a title, the description carries the burden of disclosing side effects. It clearly states that the operation cancels the import and deletes the temporary upload file, which is meaningful destructive context. It does not mention idempotency, irreversibility, or what happens to already-uploaded parts, but the core effects are disclosed.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.