Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It does disclose the $8.00 price and the output components (feature matrix, pricing, SWOT), which is useful. However, it does not mention whether the tool is read-only, how results are returned, or if there are any rate limits or additional costs, leaving some behavioral aspects opaque.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.