curl "https://sandbox-api.tender.cash/v1/api/payout/fee/tron/usdt/50" \
-H "x-access-id: your-access-id-here" \
-H "x-request-id: 550e8400-e29b-41d4-a716-446655440000" \
-H "x-timestamp: 2026-10-15T09:45:53.000Z" \
-H "authorization: <signature>"
{
"status": "success",
"message": "success",
"data": {
"amount": 50,
"amountUSD": 50,
"fee": 0.5,
"feeUSD": 0.5,
"feePercent": 1,
"baseFeeUSD": 100,
"amountAfterFee": 50.5,
"amountAfterFeeUSD": 50.5,
"activationFee": 0,
"activationFeeUSD": 0,
"amountDeductedFee": 49.5,
"amountDeductedFeeUSD": 49.5,
"activationScope": "none",
"inclusive": false,
"currency": "usdt",
"chain": "tron",
"estimatedArrival": "1-3 minutes"
}
}
Payouts
Calculate Payout Fee
Get the fee for a crypto payout of a given coin and amount on a chain
GET
/
v1
/
api
/
payout
/
fee
/
{chain}
/
{coin}
/
{amount}
curl "https://sandbox-api.tender.cash/v1/api/payout/fee/tron/usdt/50" \
-H "x-access-id: your-access-id-here" \
-H "x-request-id: 550e8400-e29b-41d4-a716-446655440000" \
-H "x-timestamp: 2026-10-15T09:45:53.000Z" \
-H "authorization: <signature>"
{
"status": "success",
"message": "success",
"data": {
"amount": 50,
"amountUSD": 50,
"fee": 0.5,
"feeUSD": 0.5,
"feePercent": 1,
"baseFeeUSD": 100,
"amountAfterFee": 50.5,
"amountAfterFeeUSD": 50.5,
"activationFee": 0,
"activationFeeUSD": 0,
"amountDeductedFee": 49.5,
"amountDeductedFeeUSD": 49.5,
"activationScope": "none",
"inclusive": false,
"currency": "usdt",
"chain": "tron",
"estimatedArrival": "1-3 minutes"
}
}
Auth method: Signed (HMAC) — this endpoint requires the full set of signed
headers:
x-access-id, x-request-id, x-timestamp, and an HMAC-SHA256
authorization signature. See Authentication.amount, your balance is debited
amount and the recipient receives amountDeductedFee (amount − fee).
Headers
string
required
Base64-encoded HMAC-SHA256 signature of
{"timeStamp":"<x-timestamp>","requestId":"<x-request-id>","accessId":"<x-access-id>"}, signed with your access secret. The request body is not part of the signature.Example: "pV3n0o8kq0lK2mJ8bZ1yq3Yt6hR0cXK9u4mVJ2l9sE0="string
required
ISO 8601 timestamp; must be within 5 minutes of server timeExample:
"2026-10-15T09:45:53.000Z"string
required
A unique UUID v4 per requestExample:
"550e8400-e29b-41d4-a716-446655440000"string
required
Your API access ID provided by TenderExample:
"your-access-id-here"Path parameters
string
required
Chain IDExample:
"tron"string
required
Coin IDExample:
"usdt"string
required
Amount to pay out, in the coin. Must be greater than zero.Example:
"50"Response
string
required
success on successExample: "success"string
required
Human-readable result messageExample:
"success"object
required
Payout fee breakdown
Show data properties
Show data properties
number
The amount you asked to pay outExample:
50number
USD value of
amountExample: 50number
Total fee in the coin, including any activation feeExample:
0.5number
Total fee in USDExample:
0.5number
Percentage fee applied to
amountExample: 1number
Cap on the percentage fee, in USD. The activation fee is added on top.Example:
100number
What the recipient receives:
amount − feeExample: 49.5number
USD value of
amountDeductedFeeExample: 49.5number
amount + fee (gross). This is not the amount delivered; use amountDeductedFee for that.Example: 50.5number
USD value of
amountAfterFeeExample: 50.5number
Part of
fee charged to activate the destination on chains that need it, in the coin.
0 when none applies.Example: 0number
Activation fee in USDExample:
0string
Which fee setting the activation fee came from:
merchant-coin, merchant-chain,
global-coin, global-chain, or none when no activation fee appliesExample: "none"boolean
Whether your account is set up for fee-inclusive pricingExample:
falsestring
Coin IDExample:
"usdt"string
Chain IDExample:
"tron"string
Typical arrival time on this chain, or
"Not available"Example: "1-3 minutes"Errors
All return HTTP 400.| Message | Cause |
|---|---|
Invalid chain | Unknown chain |
Invalid currency | Unknown coin |
Exchange price not available | No price for the coin |
Amount must be greater than zero | amount is zero or negative |
curl "https://sandbox-api.tender.cash/v1/api/payout/fee/tron/usdt/50" \
-H "x-access-id: your-access-id-here" \
-H "x-request-id: 550e8400-e29b-41d4-a716-446655440000" \
-H "x-timestamp: 2026-10-15T09:45:53.000Z" \
-H "authorization: <signature>"
{
"status": "success",
"message": "success",
"data": {
"amount": 50,
"amountUSD": 50,
"fee": 0.5,
"feeUSD": 0.5,
"feePercent": 1,
"baseFeeUSD": 100,
"amountAfterFee": 50.5,
"amountAfterFeeUSD": 50.5,
"activationFee": 0,
"activationFeeUSD": 0,
"amountDeductedFee": 49.5,
"amountDeductedFeeUSD": 49.5,
"activationScope": "none",
"inclusive": false,
"currency": "usdt",
"chain": "tron",
"estimatedArrival": "1-3 minutes"
}
}
Authorizations
Signed (HMAC) authentication. Required headers: x-access-id, x-request-id (UUID v4), x-timestamp (ISO 8601, must be within 5 minutes of server time), and authorization: the Base64 HMAC-SHA256 of the JSON string {"timeStamp":"","requestId":"","accessId":""} (keys in that order, no whitespace) using your access secret. The request body, method and path are not signed. The API key must be linked to an outlet.
Headers
Base64-encoded HMAC-SHA256 signature of {"timeStamp":"<x-timestamp>","requestId":"<x-request-id>","accessId":"<x-access-id>"}, signed with your access secret. The request body is not part of the signature.
ISO 8601 timestamp; must be within 5 minutes of server time
A unique UUID v4 per request
Path Parameters
Chain ID
Coin ID
Amount; must be greater than zero