Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Beyond the annotations, the description explains what the template contains, including required flags, formats, extra.{key} checklist items, regulatory notes, and an example. That is useful behavioral context for an otherwise simple read-only tool, though it does not discuss failure modes or response structure in detail.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.