Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint and openWorldHint=false, so the safety profile is covered structurally. The description adds one genuine behavioral trait, case-insensitive title matching, but says nothing about what a page contains, what happens on a miss, or what include_images does. With annotations carrying the safety burden, a 3 is appropriate.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.