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Atomic Money is the home for everything that moves money on Sumvin. It covers three surfaces: getting funds in and out (ramps and banking), spending them on a card (card issuing), and getting paid (payment links and x402 acceptance). Each surface has its own pages below — this page is the map.

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The three surfaces

Ramps & banking

On-ramp and off-ramp, plus bank linking — move funds between fiat and crypto, and connect a user’s bank account.

Cards — your Sigil on Visa

Issue a card backed by a user’s identity, with a funding wallet and a card record you manage through the API.

Payment links & x402

Shareable payment request links that any x402-capable wallet, agent, or browser can settle.

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Maturity at a glance

Buy and sell on-ramp is live. Off-ramp and bank linking are in private preview. End-to-end Visa card issuance is in private preview — the Card Management API and funding wallets are live today.
  • Errand — Errands settle through Atomic Money rails.
  • Sigil — the portable, KYC-verified identity that a Visa card is issued against.