Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the three-parameter schema, the output schema, and the annotations, the description gives enough for an agent to call the tool correctly: purpose, return shape, alternative tool, and a critical security constraint. A minor gap is that it does not explain what happens if the user cancels or closes the form, but the output schema likely conveys that via the {action, content} structure.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.