Real-time hotel sync booking calendar

Questions
1

Is it realistically possible to build a real-time hotel inventory sync (like a mini channel manager) in self-hosted n8n for Booking.com, Expedia, Agoda, Trip.com, Hotels.com etc.? Looking for a solid, production-ready approach?

Goal -
When a room is booked on any of these platforms → instantly reduce the available inventory on all the others (and ideally also pull new bookings from all platforms into one central calendar/airtable/google-sheet/database so I have a single source of truth).

In other words: a poor-man’s channel manager that works in real-time (or near real-time) built entirely in n8n (self-hosted)

If anyone has actually built something like this (even partially) for hotels/apartments and is willing to share workflow JSON, tips, gotchas, or why it’s a terrible idea and I should just pay for a real channel manager

2

Yes, it’s possible to build a basic real-time sync in n8n, but with some limitations:

- You’ll need API access from each platform (some may require partner status)

- Consider using webhooks for real-time updates where available, or frequent polling (every 5-15 mins)

- Start with 1-2 platforms first to test reliability

For production use, you might want to:

- Add error handling for API failures

- Implement a reconciliation process

- Consider a database (not just sheets) for reliability

I can share some workflow snippets if you’d like - which platform would you want to start with?