Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The descriptions do not contradict the annotations: setting a selection is a mutation (readOnlyHint=false) and not destructive, which is consistent. The description adds the minor behavioral context that the operation targets the 2D/3D editor viewport, but does not disclose effects such as whether an open scene is required, what happens on invalid paths, or how it interacts with the Scene dock. Note a terminology mismatch: the description says 'viewport' while the schema says the Scene dock, which could mislead.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.