post https://rest.sandbox.karhoo.com/v1/quotes/
This endpoint will return a list of quotes by the fleets who serve the location. You can either request a trip for a future date-time or ASAP (by leaving the date-time blank). You can also, optionally, specify the number of passengers and luggage.
The response will contain a quote list id and a validity period in seconds (presently the defaults for ASAP and prebooks are 300 and 600 seconds, respectively).