Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
The description fully covers all necessary context for a mutation tool: prerequisites (author, karma, time, no replies), constraints on the new parent, side effects (no notification), rate limiting, and authentication. With an output schema present, no return-value details are needed. It is complete for an agent to safely select and invoke the tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.