Send USDT

You can send USDT from your main wallet (HD index 0) in two ways:

Method	Auth	Use case
Dashboard	Email OTP	Manual withdrawals, moving funds to your own wallet
API (/merchant/wallets/send)	Session cookie + OTP	Automated sends authenticated as you

For programmatic sends on behalf of your users, use the derive API instead.

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Dashboard

1. Go to Wallets in the dashboard sidebar
2. Your current USDT balance is shown on each network card
3. Click Send USDT and fill in the destination address, amount, and network
4. Click Continue — HelaMesh sends a 6-digit OTP to your email
5. Enter the OTP and click Confirm send
6. The transaction hash appears with a link to the block explorer

Sweep before send

Before broadcasting the outbound transaction, HelaMesh automatically sweeps USDT from all confirmed invoice addresses (index 1, 2, 3…) back to your main address (index 0). This consolidates your funds so the send always goes from a single address. The sweep confirms on-chain before the send is broadcast.

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API

Step 1 — Request OTP

POST /merchant/wallets/request-send-otp
Cookie: hm_session=…

Response:

{ "ok": true, "message": "OTP sent to you@example.com" }

Step 2 — Send

POST /merchant/wallets/send
Cookie: hm_session=…
Content-Type: application/json

Body

Field	Type	Required	Notes
toAddress	string	yes	TRON base58 or BSC hex destination
amount	string	yes	Decimal USDT, up to 6 decimal places
network	string	yes	"TRON" or "BSC"
otp	string	yes	6-digit code from the email sent in step 1

Example

// Step 1
await fetch('https://api.helamesh.com/merchant/wallets/request-send-otp', {
  method: 'POST',
  credentials: 'include',
});

// Step 2 — after user enters OTP
const res = await fetch('https://api.helamesh.com/merchant/wallets/send', {
  method: 'POST',
  credentials: 'include',
  headers: { 'content-type': 'application/json' },
  body: JSON.stringify({
    toAddress: 'TQn9Y2khEsLJW1ChVWFMSMeRDow5KcbLSE',
    amount: '50.00',
    network: 'TRON',
    otp: '123456',
  }),
});

const result = await res.json();
console.log('txHash:', result.txHash);

Response

200 OK

{
  "ok": true,
  "txHash": "a1b2c3d4e5f6...",
  "network": "TRON",
  "amount": "50.00",
  "toAddress": "TQn9Y2khEsLJW1ChVWFMSMeRDow5KcbLSE",
  "swept": true
}

Field	Notes
txHash	The on-chain transaction hash. Verify on Tronscan or BSCScan.
swept	true if invoice addresses were swept into index-0 before the send

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Check your balance

GET /merchant/wallets/balance?network=TRON
GET /merchant/wallets/balance?network=BSC
Cookie: hm_session=…

200 OK

{
  "network": "TRON",
  "balance": "125.50"
}

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Gas requirements

Sends require native gas at your main address (index 0):

Network	Token	Minimum	Typical cost
TRON	TRX	10 TRX	5–8 TRX per transfer
BSC	BNB	0.001 BNB	~0.0003 BNB per transfer

If your address lacks gas, the send endpoint returns 400 Insufficient TRX/BNB for gas. Top up your main address with TRX or BNB from any exchange or wallet before retrying.