Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a read-only tool with full parameter schema, an output schema, and clear annotations, the description covers all necessary context: what artifacts are read, how the transcript is cleaned, where to get the input, and typical use cases. It is complete for an 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.