Booking.com Hotel Management API

UPDATE 3 - 9th Dec 2017

It would appear that Booking.com now have documentation available for their API, but you need to be signed up to them as a business in order to get access.

UPDATE 2 - 8th May 2017

It seems Booking.com have recently completed some Beta testing for their API, it may looks like they are making it even easier for people to connect. For more information regarding Booking.com's API, have a look here

UPDATE

Booking.com DO have an XML API system, however as many people have stated it is not available to Developers. It is internal and only made available to Hotel/Chains who are apart of their partner system. So YES they do, but NO it's not publicly available.

Original Answer

I can categorically state that at the time of writing, Booking.com do not have an API system, I know this because I've contacted them requesting such info, and they kindly advised me that they do not have an API that is currently available to developers.

There are at least two third-party channel management services that say they can synchronize via API with booking.com among many other aggregators:
1) http://verticalbooking.com/en/channel_manager.htm

2) http://beds24.com/channel-manager.html

So, presumably, there is a way to interface via API with booking.com but how to do that directly without a third-party I don't know...

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.