Does the description explain when to use this tool, when not to, or what alternatives exist?
Explains the result-scoping rule (entries follow the user's register access, empty list = no openable entries), which is genuine usage context. However, it never names an alternative tool or states when to prefer this over list_innovations, list_strategies, or search, so routing guidance is only implied.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.