Core concepts
Foundational components, data models, and security patterns that power Trustly integrations.
Before building your integration, familiarize yourself with the core building blocks — from the establishData object that configures every transaction to the webhook events that drive your backend logic.
The basics
Key concepts
The A2A payment model, Trustly Lightbox, and transaction lifecycle.
The establishData object
Configure merchant credentials, transaction details, and customer data.
Backend and security
Transactions and transaction IDs
How transaction IDs track authorizations and payment events.
Webhooks and events
Receive asynchronous transaction status updates.
Tokens and account security
Tokenized bank account information and stored credential security.