Booking.com has an API but it is only available to "channel managers". I will not recommend a channel manager here but I will outline what you can do with it and what needs to be done:
- Find a channel manager that connects with Booking.com. There are many factors to consider before you choose one:
- Some of channel managers charge a flat monthly fee, others charge a "commission" for each booking
- As far as I know, you can only synchronize the following with Booking.com:
- Per-night rates
- Per-night inventory count
- Per-night restrictions such as minimum and maximum length of stay and closed for booking
- Most channel managers will also fetch new bookings from Booking.com. You might then be able to:
- Poll the channel manager's provided URL every few minutes
- Ask the channel manager to post new bookings at a designated URL immediately
- Either way, you will be able to save new bookings in your PMS
- You can then update your inventory and push new counts to Booking.com
Once you have setup your inventory (rateplan and roomtypes) on Booking.com you will need to do the following:
- Replicate the inventory on the channel manager
- Contact Booking.com and tell them that they need to setup an XML connection with the channel manager. Booking.com will perform initial setup behind the scenes
- Map the channel manager's inventory with Booking.com. A good channel manager will have their staff set things up for you
Finally, you will implement the channel manager's API to push information from your PMS to the channel. The channel will then push that information to Booking.com. You will have to login to the extranet every now and then to make sure all inventory and bookings are synced properly.