The Stablecoin Cards API is REST-based with JSON responses. No proprietary SDKs required to get started - though we have client libraries for common stacks. Your backend team can be making live calls the same day credentials land in their inbox.
The core surface covers five areas
- Customer onboarding with embedded KYC: you pass the user data, we run the compliance flow.
- Deposit address generation and management: generate and rotate addresses across Ethereum, Tron, Solana, Base, and Polygon.
- Card creation with stablecoin funding: one call to issue a card, another to tie a deposit address to it.
- Real-time transaction webhooks: on-chain confirmations push events directly to your endpoint, so you're not polling.
- Balance queries and transaction history: standard read endpoints for your UI layer.
Supported stablecoins
USDC, USDT, PYUSD. All dollar-pegged. No exchange rate logic on your side.
On timeline - most engineering teams are in testnet within a day. Production integration typically runs one to two weeks, depending largely on your internal compliance review process. The API side is not the bottleneck.
The documentation is written for engineers, not for sales calls. Testnet credentials are available immediately. And our team is responsive when something doesn't behave the way the docs say it should.
If you want to get your engineers access today - start here: www.payscribe.co