Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate readOnlyHint=false, openWorldHint=true, and destructiveHint=false, so the non-read-only nature is covered. The description adds that the summary retains heatmap-compatible block metadata for certain analyses, which is a useful output detail, but it doesn't disclose side effects beyond what 'refreshes' implies. Given the annotations, the description adds modest value without contradicting them.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.