atomcore · The retailing API

Everything between "book it" and "boarded".

atomcore is our RSP-accredited retailing API: booking, payment, ticket issuing, aftersales and settlement for UK rail — the system that has fulfilled every ticket on traintickets.com and Rail Europe's entire UK rail offer for eight years.

Talk to us about atomcore

A complete retailing system, behind one API.

Retailing rail isn't a booking call — it's accreditation, fulfilment formats, payment flows, refund rules, settlement files and a long tail of edge cases. atomcore carries all of it, so a partner integration is genuinely complete: search results in, travelling customers out.

It is an RSP-accredited ticket issuing system, which means tickets issued through atomcore are the real thing — recognised at every barrier and by every operator on the National Rail network.

From booking to barrier.

  • Booking

    Reservations, seat selection, and the full UK fares range surfaced by atomsearch or your own search layer.

  • Payment, your way

    We take payment (card, Apple Pay, Google Pay) or hand over to your own payment flow; retail in your customers' currencies with settlement in GBP.

  • Fulfilment, every format

    Etickets, mobile barcodes and Ticket on Departure, issued instantly.

  • Aftersales built in

    Refunds and exchanges in full compliance with the National Conditions of Travel, via API or atomagent.

  • BritRail retailing

    Pass sales, M-Pass mobile fulfilment, self-serve Flexi activation, and seat reservations fully compliant with RDG's updated standard. See BritRail for retail partners →

  • Settlement and reporting

    Automated, itemised settlement reporting per retailer, including the monthly report required by RDG for BritRail.

Built for the integration you actually want to do.

Clean JSON interfaces, sandbox access from day one, documentation written by the engineers who built the endpoints — and those same engineers on the other end of your questions during the build. Partners have integrated atomcore behind consumer websites, native apps, B2B agent platforms and downstream distribution APIs; the API is complete enough that Rail Europe built their own customer-facing Flexi ticket-issuing experience entirely on top of it.

Proven where it counts.

traintickets.com

Every booking on our own retail site.

Rail Europe

Every National Rail product they sell, across B2C, B2B and API channels, for eight years.

Distribusion

UK rail supply to a global ground-transport network connecting carriers to the world's largest travel retailers.

Works with

Pair atomcore with atomsearch for journey planning and split ticketing, atomui for a complete branded store, and atomagent for your support team. Or integrate it alone behind your existing stack.

Start the conversation.

Tell us what you're building — we'll tell you honestly whether and how the platform fits. You'll be talking to the engineers who own the company.

Talk to us about atomcore