Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a tool with 1 parameter (a complex array structure), 0% schema description coverage, no annotations, and no output schema, the description is inadequate. It doesn't explain what 'Get tasks' returns, how to interpret the items array, error handling, or how this differs from similar retrieval tools in the sibling set.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.