Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple delete tool with one required parameter and annotations covering destructive behavior, the description is minimally sufficient. However, it omits any context about consequences (e.g., fail if referenced) or confirmation steps, which would be helpful in real-world usage. The presence of complete schema and annotations lifts it from a 2, but it still lacks proactive clarity.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.