Cards
Offer stablecoin-backed debit cards. Customers spend at hundreds of millions of merchants worldwide that accept Visa; your platform can receive interchange.
Lightspark API
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Capabilities / Cards
Balances are held in USDB. Spend at hundreds of millions of merchants worldwide that accept Visa. Lightspark settles with the network when you tap. Swipe to explore.
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Technical specs
01
Overview
Offer stablecoin-backed debit cards. Virtual or physical. Customer balances are held in USDB; they spend at hundreds of millions of merchants worldwide that accept Visa, and Lightspark settles with the network when they tap. Your platform can receive a share of interchange.
02
Cards
- NetworkVisa and Maestro
- FormatVirtual or physical debit cards
- AcceptanceHundreds of millions of merchants worldwide that accept Visa
- Funding sourceCustomer Global Account balance, held in USDB
03
Revenue
- InterchangePlatform may earn a share of interchange on every transaction
04
API
- ProtocolREST, OpenAPI 3.1
- SDKsTypeScript, Kotlin
- AuthHTTP Basic (server-side), Passkeys / OIDC / Email OTP (end-user)
- Money movementQuote → execute → webhook. Same flow for every rail, every currency.
- SigningECDSA P-256, device-held keys, per-action payloadToSign
- IdempotencyIETF-spec Idempotency-Key on every mutation
- WebhooksSigned payloads, exponential retry, deduplicate by delivery ID
05
Integration
- Time to launchWeeks
- BrandingYour brand and product surface
- EconomicsCard interchange share and transaction fees accrue to the platform
- PricingCustom