How to connect a restaurant booking system without an API
Five practical connection methods for bringing external reservations into one live service book when provider API access is unavailable.
Key takeaways
Provider reservation IDs are the strongest duplicate-prevention key.
Email ingestion is usually the fastest near-real-time fallback.
Daily reconciliation is essential because every non-API method can miss an update.
1. Ingest provider booking emails
A unique forwarding address can receive new-booking, modification, cancellation, no-show and waitlist messages. The parser extracts the provider reference, guest, time, covers and status, then updates the same reservation rather than creating duplicates.
Email formats can change, so rejected messages need a visible review queue rather than silent failure.
2. Schedule CSV and calendar imports
Scheduled CSV exports can contain richer guest and status data than a calendar feed. A safe importer maps columns, validates rows, detects duplicates, shows a preview and supports rollback.
Calendar feeds are useful as an availability safeguard but often omit the consent and identity detail required for a complete guest profile.
3. Make manual entry genuinely fast
Phone bookings and last-minute external reservations still need a quick host workflow. Name, contact, covers, time, table, provider and reference should be enough to update the room in seconds.
4. Reconcile every service
Compare provider covers, Tische reservations, seated guests and connected POS orders. Exceptions such as ‘provider shows 42 covers; live book shows 38’ should appear in an inbox for review before they distort forecasting.