Card infrastructure for the stablecoin economy

Launch your own crypto card program in 90 days. Zelt offers Card-as-a-Service backed by USDC and USDT — KYC managed, API-first, LATAM-ready.

Book a Demo →How It Works

~95%

Acceptance rate

90 days

Time to launch

150+

Countries

•••• •••• •••• 4821

CARDHOLDER

SATOSHI N.

•••• •••• •••• 7293

VIRTUAL CARD

USDC / USDT Settlement

✓

$2,450.00 approved

Amazon · 0.3s

SUPPORTED NETWORKS

Ethereum

Solana

Polygon

Tron

BaseSoon

ArbitrumSoon

STABLECOINS

USDC

USDT

HOW IT WORKS

Launch in four steps

From application to first card issued — typically 90 days, including Visa certification.

Apply & Integrate

Submit your company profile. Our compliance team runs KYB and onboards you in days — not months. API keys delivered instantly.

Configure your program

Set spending limits, choose virtual or physical cards, enable Apple Pay / Google Pay. Full control via dashboard or API.

Onboard your users

Use our KYC-as-a-Service (powered by Sumsub) or delegate to your own KYC provider. Issue cards in seconds via a single API call.

Go live & scale

Cards accepted in 150+ countries. Stablecoin balance auto-converts at point of sale. Real-time webhooks, transaction monitoring, and chargeback management included.

FEATURES

Everything your card program needs to scale

💳

Virtual & Physical Cards

Issue Visa virtual cards instantly via API. Physical cards shipped globally with custom branding.

🔐

KYC/AML Managed

Full compliance stack included — KYC, on-chain monitoring, and OFAC screening. Delegate or self-serve.

📱

Apple Pay & Google Pay

Your cardholders tap to pay worldwide from day one. No extra integration work needed.

🌎

LATAM-First Infrastructure

PIX (BRL), SPEI (MXN), and ACH rails built-in. Full LATAM coverage out of the box.

🔗

Full API + Webhooks

REST API for card issuance, auth controls, spend limits, and transaction streaming. iFrame widget for PCI scope reduction.

RAMP-AS-A-SERVICE

The bridge between crypto and real money

Onramp and Offramp in both directions. USD, BRL, and MXN rails built-in. The same infrastructure that powers your card program.

Onramp

Fiat → Stablecoin

🏦

PIX / Wire / ACH

✓

Fiat received & validated

⚡

Mint USDC / USDT

💼

Stablecoin in wallet

Offramp

Stablecoin → Fiat

💎

USDC / USDT sent

🔐

On-chain AML screening

⚡

Burn → USD

🏦

Wire / ACH / PIX / SPEI

SUPPORTED CURRENCIES & RAILS

🇺🇸

USD

ACH · Wire · SWIFT

🇧🇷

BRL

PIX (instant)

🇲🇽

MXN

SPEI

DEVELOPER API

Built for builders, not bankers

REST API and SDKs that feel like fintech — not legacy financial middleware. Ship your card program with a few hundred lines of code.

Card issuance (virtual + physical)

Spend controls & velocity limits

Real-time transaction streaming

Stablecoin top-up & balance APIs

KYC/KYB webhooks

Chargeback management

iFrame widget (PCI scope reduction)

3DS & tokenization built-in

View Documentation →

zelt-example.ts

"color:rgba(255,255,255,0.25)">// Issue a virtual card in seconds
const card = await zelt.cards.issue({
  program_id: "prg_xyz123",
  cardholder: {
    name: "Satoshi Nakamoto",
    kyc_status: "approved",
  },
  funding: {
    currency: "USDC",
    chain: "ethereum",
    spend_limit: 5000_00,
  },
  type: "virtual",
});
 
console.log(card.id);        "color:rgba(255,255,255,0.25)">// crd_8f2a...
console.log(card.pan_masked); "color:rgba(255,255,255,0.25)">// ****4821
console.log(card.status);    "color:rgba(255,255,255,0.25)">// "active"
 
"color:rgba(255,255,255,0.25)">// Listen for real-time events
zelt.webhooks.on("card.transaction.approved", (event) => {
  console.log(event.amount, event.merchant);
});

GET STARTED

Ready to launch your card program?

Talk to our team. We'll walk you through the integration, licensing path, and get you a sandbox within 24h.