Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The annotations already establish that this is a non-destructive, non-open-world read operation. The description adds two useful behavioral facts beyond them: the return payload (table plus optional paragraph) and the guarantee that a real algorithm engine, not an LLM, performs the computation. It says nothing about how the grouping or test-method choices affect output, so the added disclosure is modest.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.