Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With strong annotations (read-only, idempotent, non-destructive), a 100%-documented schema, and an output schema, the description fills the remaining gaps: pagination semantics, search/folder scope, and compatibility behavior. It is fully complete for an AI agent to select and invoke the tool correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.