Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the complexity of restarting a session (a mutation operation with potential side effects), no annotations, and no output schema, the description is incomplete. It lacks details on behavior, outcomes, error conditions, or dependencies, leaving the agent with insufficient context to use the tool effectively beyond its basic purpose.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.