Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a news retrieval tool with 2 parameters, 0% schema coverage, no annotations, and no output schema, the description is incomplete. It covers content scope and language but misses parameter explanations, behavioral context (how news is retrieved/filtered), and output expectations. Given the complexity and lack of structured data, the description should do more.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.