Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations supplied, the description carries the full behavioral burden, and it discloses almost nothing: no indication of whether the tool returns a static prompt, a multi-step playbook, an interactive analysis, or how the optional query changes the output. 'Save hours every week' and 'no setup' are marketing claims, not behavioral facts. The only usable signal is that it works in any chatbot.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.