Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a batch read tool with complex nested parameters (array of objects with id, properties, and associations), no annotations, and no output schema, the description is severely incomplete. It doesn't explain parameter requirements, return format, error handling, or operational constraints. The minimal description is inadequate for the tool's complexity.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.