Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple one-parameter tool this is mostly adequate: it states the action, the compiler used, and the return value. However, with no output schema, no annotations, and an ambiguous sibling (compile_and_load_pawn), the description should have addressed side effects (e.g., generated .amx file) and the selection boundary between the two compile siblings. These gaps leave an agent to guess.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.