An API for moving money between accounts, with atomic transfers, streaming balances, and a built-in audit trail.
Financial primitives that handle the hard parts so you don't have to.
Source and destination balances update in the same operation.
Balance changes and operation events stream to your code over WebSocket.
Every transfer links to the operation that created it and the full event chain.
Pick the pieces you need — balances, trading, payments — and ship a working product in days.
Six building blocks, roughly fifty lines of code, and a product your users can pay with
The SDK and the Explorer show the same balances because they read from the same source of truth.
Start buildingYour dev says 'ship in a week.' They mean it.
See why ArcaThe SDK is named and typed so AI-generated code runs correctly without hand-editing.
Build with AIWatch balances, events, and operations update in real time.
Financial infrastructure requires guarantees, not best-effort. These aren't aspirations — they're enforced by the platform.