Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations provide critical behavioral information: readOnlyHint=false (write operation), destructiveHint=false (non-destructive), idempotentHint=false (not idempotent), and openWorldHint=true (can create new resources). The description adds no behavioral context beyond what annotations already declare. It doesn't explain what 'redeploy' actually does (e.g., restarts containers, pulls new images, reapplies configurations), whether it causes downtime, or any side effects. With annotations covering the basic safety profile, a 3 is appropriate as the description adds no value.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.