Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
The tool has an output schema and annotations that cover return structure and safety behavior, so the description does not need to explain those. However, with five optional parameters and a sizeable sibling set, it leaves notable gaps: the 'tag' and 'locale' parameters are not addressed, and there is no guidance on when this digest is preferable to 'search', 'timeline', or 'series'.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.