Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple, one-parameter fetch tool with no output schema, the description adequately specifies both the input format (name or id with examples) and the return contents (role, lane, lead-shape, tagline, address, brood conversion summary). It provides sufficient context for an agent to invoke it correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.