Developers

A small API that does the job.

Predictable requests and responses, clear statuses and signed webhooks. Full reference and sandbox keys are available in your merchant account.

Signed requests

Every request carries your merchant ID and a signature made with your API key.

Safe retries

Send your own order_id: repeating a request returns the same invoice instead of a duplicate.

Webhooks

Status changes are sent to your URL with a signature and retried until your server confirms.

POST /v1/invoiceresponse

# create an invoice
curl https://api.cryptins.com/v1/invoice \
  -H "merchant: 8c1f…" \
  -H "sign: 4a9e…" \
  -d '{
    "amount": "250.00",
    "currency": "USDT",
    "network": "tron",
    "order_id": "shop-90417",
    "url_callback": "https://shop.com/hook"
  }'

# 200 OK
{ "uuid": "b2e1…", "status": "pending",
  "address": "TQ7r…", "expires_at": 1761141600 }

webhook

{
  "type": "invoice",
  "uuid": "b2e1c4d0-…",
  "order_id": "shop-90417",
  "status": "paid",
  "amount": "250.00",
  "currency": "USDT",
  "network": "tron",
  "txid": "9f2a…c71e",
  "is_final": true,
  "sign": "5d0b…"
}

Always verify the signature and use is_final as the signal to fulfil an order.

Endpoints

Core methods

Method	Purpose
POST /v1/invoice	Create an invoice
POST /v1/invoice/info	Get an invoice by uuid or order_id
POST /v1/invoice/list	Invoice history with filters
POST /v1/wallet	Create or get a static address
POST /v1/wallet/disable	Disable a static address
POST /v1/payout	Create a payout
POST /v1/payout/info	Get payout status
POST /v1/balance	Balances by asset and network
POST /v1/services	Available assets, networks and limits

Need the full reference?

Documentation, sandbox and API keys are available in your merchant account.

Get started →