Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simple nature (one parameter, string return), the description covers the essential aspects: what it does, when to use, and what it returns. However, it does not elaborate on the nature of the 'summarized' results or any potential limitations, which would enhance completeness, but for a straightforward web search tool, it is largely sufficient.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.