Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description must disclose behavioral traits itself. It explains the content but does not explicitly confirm read-only status, return format, or any special considerations like rate limits or authentication. The reference to the public /today page suggests public accessibility, which is helpful.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.