Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the complexity (3 parameters with nested objects, no annotations, no output schema), the description is incomplete. It doesn't explain what the tool returns, how to interpret results, error conditions, or the relationship between keys and prMeta inputs. For a fetch operation that might involve external system integration, more context is needed.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.