Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations indicate readOnlyHint=false, confirming mutation. The description adds 'partial modifications,' which implies it is not a full replacement. However, it does not disclose other behavioral traits such as idempotency, error behavior, or whether it follows SCIM standards. For a mutation tool with no destructiveHint annotation, the description provides minimal extra behavioral insight.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.