Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a complex creation tool with 2 parameters (including nested objects), no annotations, no output schema, and 0% schema description coverage, the description is inadequate. It doesn't explain the task domain, required inputs beyond the schema, expected outcomes, or error handling, leaving critical gaps for agent understanding.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.