An API is a defined interface that lets one software system request data or trigger actions in another in a structured, repeatable way. In travel payments, APIs connect booking platforms, payment providers, acquirers, reconciliation engines and accounting systems so that the same booking, payment, refund or settlement record can flow between them without manual rekeying. Modern travel-payment APIs are typically REST or GraphQL, with webhook callbacks for events the merchant cannot poll for.
Travel payments glossary
API (Application Programming Interface) in travel payments
A defined interface that lets travel and finance systems exchange payment and booking data programmatically.
Why it matters in travel
A booking platform that exposes APIs for payments, status, refunds and settlement makes it possible to keep the booking, the money trail and the finance picture aligned automatically. Where APIs are absent or inconsistent, finance teams build spreadsheets to bridge the gap and pay for that work in operational hours forever.
For travel businesses with multi-system stacks, the quality of the APIs between booking, payment and finance systems decides whether automation is possible at all. A clean API surface lets the operator build automation that compounds in value; a fragmented or undocumented one forces every cross-system question through a person.
The travel businesses that get API design right treat their booking and payment APIs as products with their own roadmaps, versioning and reliability commitments. The businesses that treat APIs as integration glue find that the glue keeps breaking and the manual workarounds quietly settle in.
How felloh helps
felloh provides booking-aware payment APIs, SDKs and webhooks so engineering teams can wire payment movement, settlement and protected-funds context into the systems their finance and operations teams actually use. The same APIs are exposed to AI agents through the felloh MCP server.
Where this shows up for engineering and AI.
API (Application Programming Interface) in travel payments touches more than one workflow at felloh. Start with the pages most travel teams reach for next.
- Agentic AI
Booking-aware endpoints, MCP server and prompt playbooks for AI travel agents — with safety built in.
Explore - Financial Operations
The booking-aware ledger that sits behind every felloh API, SDK and MCP tool.
Explore - Financial Visibility
One financial picture every connected agent, integration or system can read from.
Explore
More on the AI-native felloh platform.
Real-world context from the felloh team and customers, written for travel finance and operations.
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UpdatesGiving AI agents access to travel payments: introducing the felloh MCP server
Use ChatGPT or Claude to orchestrate travel payments through felloh's MCP server — a conversational layer on top of existing APIs and SDKs.
Read article -
UpdatesBuilding for a connected travel stack: introducing felloh SDKs
felloh's new C#, Node.js, PHP and Python SDKs make it easier for developers to wire payments into the wider travel stack.
Read article
Connect the dots.
See how payments, settlement, refunds and reporting evidence connect around every booking.