search_addresses
Find addresses at a UK postcode
Use when you have a UK postcode and need the exact property (broadband availability differs per property). Ask for the postcode and house number or name in ONE question up front. If the user's message already identifies the property (e.g. '1 Fyfields, SS13 1HJ'), match it against the returned list yourself and proceed straight to the next tool, briefly saying which address you're checking. Only show the numbered list and ask them to pick when the match is ambiguous or they gave postcode only and want precision. Then pass the entry's uprn (never shown to the user) plus its display_address as address_label to the other tools.
postcode必填