Crypto payments on your own server.
Your keys. Your funds.

WildGazelle is a self-hosted crypto payment gateway for USDT TRC-20. No custodial intermediary between your client and your wallet — funds go straight to addresses only you control. NOWPayments-compatible API: switch in hours, not weeks.

Get the gateway See the API

🔑 Non-custodial by design

The server holds only a public key (xpub). Payment addresses are derived from it; private keys never exist on the server — even a full server compromise can't touch funds.

🎯 Unique address per payment

Every invoice gets its own TRC-20 address. Payments match to orders automatically — no memos, no manual reconciliation, no "who sent this $99?"

⚡ Instant automation

On-chain detection with 19+ block finality, strict USDT contract validation, signed IPN callbacks to your backend, hosted payment page with QR out of the box.

🔁 NOWPayments-compatible

Same x-api-key auth, same payment object fields, same HMAC-SHA512 IPN signature pattern. Existing integration code ports with minimal changes.

🧾 Audit-grade ledger

Append-only event log with TXIDs for every payment — your accounting record from day one, reconcilable against the blockchain.

🛡 No chargebacks, no bans

No processor can freeze your account, reject your vertical, or hold settlements. You run the rail — high-risk friendly by architecture.

Two ways to get it

Available now: source license. Hosted API opens in Phase 2.

SOURCE LICENSE

Buy the code

One-time license · deploy on your infrastructure
  • Full source code (Node.js + PostgreSQL), no obfuscation
  • Deploy on any VPS — you own the stack end-to-end
  • Multi-merchant: run it for your own projects or your clients
  • Offline wallet ceremony scripts + sweep tooling included
  • Deployment guide, API docs, update access
HOSTED API — COMING SOON

Use our gateway

Phase 2 · join the waitlist
  • API keys, no infrastructure needed
  • Your own xpub: funds land on addresses only you control
  • Hosted payment pages, signed IPN callbacks
  • Same API as self-hosted — migrate either way, zero code changes
  • Opening after the production battle-test period — email us to reserve a spot

Integration in two calls

Create a payment, redirect to the hosted page (or show the address). Done.

POST /v1/payment   x-api-key: YOUR_KEY
{ "price_amount": 299, "price_currency": "usd",
  "pay_currency": "usdttrc20", "order_id": "user123-pro" }

→ { "payment_id": "9f2c4b1a8e77d310",
    "pay_address": "TX8h6D...unique per payment...",
    "pay_amount": 299, "payment_status": "waiting",
    "pay_url": "https://pay.wildgazelle.com/pay/9f2c4b1a8e77d310" }

IPN → your backend  (x-wildgazelle-sig: HMAC-SHA512)
{ "payment_id": "9f2c4b1a8e77d310", "payment_status": "finished",
  "actually_paid": 299, "order_id": "user123-pro" }