Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides specific contexts for use: 'when context is stale, the task is done, or you want to clear sensitive data the agent saved earlier.' It also mentions pairing with 'remember' and 'recall', which implicitly guides when not to use it. However, it does not explicitly state when not to use it or list alternatives beyond the pair.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.