Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicit when-to-use: insurance lines not quoted in chat (renters, condo, landlord, umbrella, life, commercial, motorcycle, boat, RV) or a home/auto customer who would rather talk later. It also states a prerequisite ('Best to confirm with the customer before sending their contact details'). It stops short of naming a sibling alternative or stating an explicit when-not condition, which keeps it from a 5.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.