What is Atum?

Atum is the first open payments network — a multi-sided network that connects payment initiators, settlement providers, and payment rails under a single coordination layer for tokenized currency payments. You submit a payment request; Atum handles authorization, routes it to a settlement provider, orchestrates delivery to the destination rail, and returns a settlement receipt — without you managing correspondent relationships, liquidity, or rail infrastructure.

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The big idea

Most payment infrastructure bundles coordination, liquidity, and rail access into one opaque system. When something breaks or costs too much, you have no leverage — you’re locked in. Atum separates these concerns into four distinct layers. Each layer has a clear owner and a clear responsibility. You integrate once at the top; everything below is Atum’s problem to coordinate.

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What Atum does

When you submit a payment request, Atum:

1. Authorizes — validates the request, checks credentials and policy
2. Selects a quote — settlement providers submit competing price quotes to fulfill the request, and the Gateway selects one
3. Orchestrates — coordinates multi-rail value transfer from source to destination
4. Confirms — returns a settlement receipt with delivery proof from both rails

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Who can initiate a payment

Atum accepts payment requests from any application layer:

• Traditional apps — server-side services, payment backends, PSP integrations
• AI agents — autonomous workflows that call Atum
• Merchant endpoints — checkout flows and B2B invoice acceptance

The integration is the same regardless of who initiates — one API call, one receipt.

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Where Atum fits

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Who owns what

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What you can build

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What Atum is not

Atum is the coordination layer. By design, Atum does not:

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Next steps