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Build on Inzi

Accept stablecoin payments with 3 API calls. Create checkout → get webhook → done.

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Get API keys

Why Inzi?

POST /v1/checkouts → create session. GET /v1/checkouts/:id → check status. Webhook → payment confirmed. That’s it. No SDK required.

3 endpoints, 1 webhook

Use sk_test_ keys to simulate payments. Mock webhooks fire in 5 seconds. No testnet tokens needed.

Test mode built in

Polygon, Base, Ethereum, Tron, TON, Solana. Your API call is the same regardless of chain. Inzi handles the blockchain.

Multi-chain, one API

Quick example

Create a checkout in one API call:

Create a checkout
curl -X POST https://api.inzilink.com/api/v1/checkouts \
  -H "Authorization: Bearer sk_test_xxxxx" \
  -H "Content-Type: application/json" \
  -d '{
    "amount": "25.00",
    "currency": "USD",
    "metadata": { "order_id": "ORD-123" },
    "redirect_url": "https://yoursite.com/success"
  }'

Response:

Response
{
  "id": "chk_test_abc123def456",
  "status": "pending",
  "amount": "25.00",
  "currency": "USD",
  "checkout_url": "https://pay.inzilink.com/c/abc123",
  "expires_at": "2026-04-04T12:30:00Z",
  "created_at": "2026-04-04T12:00:00Z"
}

Redirect your user to checkout_url. They pick a chain, pay in USDC or USDT, and you get a webhook when it’s confirmed.

Supported chains & tokens

ChainTokensConfirm TimeGas Tier
SolanaUSDC~1 secondLow
PolygonUSDC, USDT~24 secondsLow
BaseUSDC~24 secondsLow
TONUSDT~5 secondsLow
TronUSDT~60 secondsMedium
EthereumUSDC, USDT~72 secondsHigh

Your API call is identical across all chains. Inzi abstracts the blockchain away — merchants never deal with RPC nodes, gas fees, or wallet management. Use GET /v1/chains to get real-time chain metadata for your UI.

Ready to integrate? Start with the quickstart →