Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full behavioral burden. It does disclose ordering (newest first), the default filter (open), and a real permission trait ('every project the key allows'), which is meaningful. It stops short of anything about pagination/truncation, rate limits, or what a returned report contains.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.