Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
There is no output schema and no annotations, so the description must explain what the tool returns. 'Detailed information' is vague—an agent cannot know if this includes DNS records, PHP settings, SSL status, or other domain-specific data. For a domain-info tool with no structured schema, this is a significant gap.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.