New to tokenized currency payments? Read Atum infrastructure first.
Browse by topic
Full alphabetical index: Glossary.
Core concepts
Core concepts
Key ideas to understand before you integrate — browse by topic below.
These pages explain the vocabulary and boundaries you need before calling the Payment Gateway. For the end-to-end flow, start with Atum payment lifecycle.
Payment request
What a payment request is, what you sign, and what happens after you submit it.
Idempotency
How Atum deduplicates retries so a payment or quote request is never created twice.
Policy enforcement
Two ways to constrain who may fulfill a payment.
Network participants
Who does what in an Atum payment — your app, the gateway, settlement providers, and recipients.
Corridors and assets
Which rail and token pairs are supported, how assets are identified, and how amounts work.
Token approvals
One-time setup that lets Atum move tokens from your source account before a payment.
Identity
What is Atum ID?
Identity on a payment, not a login — and not permission to move funds.
Know Your Agent
Who is answerable when software spends on your behalf.
Credentials
What 'credential' means if you come from cards or wallets
Verifiable presentations
The W3C wrapper that binds credentials to a specific payment or quote.