clotho — Non-custodial USDT payment gateway
Accept TRC-20 and BEP-20 USDT without ever giving up your keys. clotho is a developer-first,
non-custodial USDT payment gateway. The server only ever sees your extended public key — enough to
derive a fresh deposit address per order, never enough to spend.
Features
- Actually non-custodial — wallets are generated in your browser; only public keys are uploaded.
- One address per order — BIP44-derived from your xpub; orders map exactly to deposits.
- HMAC-SHA256 signed webhooks with replay window, delivery dedup and 3-day retry.
- Hosted checkout — QR code, countdown, live payment status, bilingual.
- Real-time OFAC sanctions screening on every sender.
- Developer-first: idempotency keys, RFC 7807 errors, OpenAPI 3.1, Go/Node/Python samples.
Live in three steps
- Generate a wallet — a 24-word mnemonic, created in your browser; only public keys are uploaded.
- Create an order — one API call returns a deposit address and a hosted checkout URL.
- Get the webhook — after on-chain finality, a signed webhook hits your server.
Documentation ·
Merchant console ·
API reference
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