Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With zero annotations, the description carries the full behavioral burden. It does disclose one useful fact — that the artifact is a 'prompt pack' containing a prompt, usage guide, and edge-case handling — implying the tool returns prompt content rather than a finished report. Beyond that it says nothing about output format, permissions, or side effects, and the sales-pitch framing obscures rather than clarifies behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.