Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a single-parameter mutation tool with a present output schema and a destructiveHint annotation, the description covers action, scope, retention, recovery, permissions, and side effects on submissions. Remaining gaps such as idempotent re-deletion or permission-denied error codes are minor edge cases, and the output schema covers return-value expectations.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.