Search is the rooms.aero search page as an API. Give it an area and a range of check-in dates and it returns every hotel there with at least one award starting in that range, along with the cheapest standard and suite rates and the check-in dates they fall on. start_date and end_date bound when a stay begins, not when it ends; add nights (1 to 5) to look for one stay length, or leave it out for all.

Describe the area either as a bounding box (all four of sw_lat, sw_lng, ne_lat, ne_lng; zero is a valid edge, and the box may not cross the antimeridian) or as a location to geocode, such as a city, island or region name. Areas are limited to 500 hotels; for dense cities, narrow the box or add a source filter. Results come cheapest award first and paginate with skip and take like every other list.

Each result embeds the full hotel object, so you can go straight to Get Availability with its hotel.id for the complete calendar.