Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description explicitly states '[write, altera dados]' and the PUT method, reinforcing that this tool mutates data, which aligns with readOnlyHint=false. It also discloses bulk execution via 'accepts ids for batched execution', a behavior not captured in annotations. It does not describe response behavior, but annotations cover the safety profile sufficiently.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.