Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
This is a mutation tool with 3 parameters, no annotations, no output schema, and multiple sibling alternatives, yet the description provides minimal information. It fails to explain what a milestone is in this context, how it differs from other project management artifacts, what the parameters mean, or what happens after creation. For a tool of this complexity and context, the description is completely inadequate.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.