Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=false, idempotentHint=false, destructiveHint=false, so the safety profile is covered. The description usefully adds that the mutation materializes a draft copy of the tree, but says nothing about overwriting an existing draft, permission requirements, or failure conditions — the main behavioral risks for this operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.