Check real-time appointment availability for one TimePlex shop (slug from search_shops, items from get_shop_services) on a date, optionally at a time. All times are Korea Standard Time (KST).
USE THIS TOOL WHEN: the user asks whether an appointment is available, asks for open slots or possible times, asks for shops that are actually available on a date / at a time / for a party size ("10월 1일 강남 헤드스파 예약 가능한 곳", "any head spa open at 5 PM?", "somewhere I can book tomorrow afternoon for two"), asks for alternatives to an unavailable time, or wants to book (check the slot before start_booking).
DO NOT USE IT FOR: find / recommend / compare requests. A date or time alone is not availability intent — "recommend a head spa in Gangnam for October 1" stays a search_shops request unless the user asks whether a slot is open.
REAL-TIME RULE: only this tool establishes that a slot is open. Never infer availability from bookable=true, business hours, the shop being open, a service or staff member existing, web search, maps, social media, third-party sites or earlier answers. Describe a time as available only when this tool returns it.
PARTY SIZE: check the whole party as the items schema describes (qty for capacity shops). Never stitch separate single-person slots into a group booking unless the result shows it.
RESULTS: if the requested time is unavailable, say so and offer the returned alternatives. If blocked is 'inquiry_only', the service cannot be booked online — tell the customer to contact the shop. If nothing is open, say no confirmed slot was found; you may check other suitable TimePlex shops. Checking availability does not reserve anything.
NEXT: with the open times you may add start_booking links so the customer can book the slot they pick — never call the slot reserved or booked.