Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a batch mutation tool with 1 complex parameter (an array of objects), 0% schema description coverage, no annotations, and no output schema, the description is inadequate. It doesn't explain the parameter structure, required fields, updatable properties, behavioral constraints, or expected outcomes. The agent would struggle to use this tool correctly without additional documentation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.