Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false. The description adds meaningful behavioral context beyond those flags: the verification is based on a published integrity manifest, and path resolution is restricted to known snapshots, preventing arbitrary access. This usefully clarifies the safety and scope boundaries.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.