Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a tool with no parameters and no output schema, the description covers the name, type, and default. However, it does not explain the range of possible values or the meaning of the value in terms of RC stick input (e.g., units, typical range). This leaves the agent with incomplete information to interpret the output.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.