Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a tool with no output schema, no annotations, and only a one-line description, important context is missing: what the generated analytics look like, where they are written, whether the tool is read-only, and what 'Pro feature' means for invocation. The description gives the agent just enough to guess the purpose but not enough to confidently call the tool correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.