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POST
/
v1
/
api
/
payment
/
initiate
/
{currency}
Initiate Payment By Fiat Currency
curl --request POST \
  --url https://secureapi.tender.cash/v1/api/payment/initiate/{currency} \
  --header 'Content-Type: <content-type>' \
  --header 'authorization: <api-key>' \
  --header 'x-access-id: <x-access-id>' \
  --header 'x-request-id: <x-request-id>' \
  --header 'x-timestamp: <x-timestamp>' \
  --data '
{
  "amount": "100.00",
  "chain": "ethereum",
  "currency": "usdc"
}
'
{
  "status": "<string>",
  "message": "<string>",
  "data": {
    "type": "<string>",
    "chain": "<string>",
    "chainId": "<string>",
    "amount": "<string>",
    "agentId": "<string>",
    "merchantId": "<string>",
    "usdAmount": "<string>",
    "coinAmount": "<string>",
    "fee": 123,
    "feeUSD": 123,
    "feeSent": true,
    "rate": 123,
    "walletAddress": "<string>",
    "walletAddressIndex": 123,
    "currency": "<string>",
    "activationFee": 123,
    "activationFeeUSD": 123,
    "contractAddress": "<string>",
    "agentAmount": "<string>",
    "agentRate": "<string>",
    "agentCurrency": "<string>",
    "txId": "<string>"
  }
}

​
Path Parameters

​
currency
string
required
Currency code for the paymentExample: "ngn"

​
Headers

​
authorization
string
required
Base64-encoded HMAC-SHA256 signature of the request payload using the API secretMinimum string length: 1Example: "5e73d044c44d733fcf819ad3409aaaddca840d421b69cb0b04e2c750fc62e-ce7526d36296237663ad1f06f62a730c0466516507196b3ce6567493c-c52a7cf63d"
​
x-timestamp
string
required
Current timestamp in ISO 8601 formatExample: "2025-03-15T09:45:53.000Z"
​
x-request-id
string
required
Unique identifier for the request (UUID v4)Example: "550e8400-e29b-41d4-a716-446655440000"
​
x-access-id
string
required
Your API access ID provided by TenderExample: "your-access-id-here"
​
Content-Type
string
required
Media type of the request bodyExample: "application/json"

​
Body

​
amount
string
required
Payment amount in the specified currencyExample: "1.023"
​
chain
string
required
Blockchain network to use for the transactionExample: "avalanche"
​
currency
string
required
Cryptocurrency for the paymentExample: "avalanche"
​
reference
string
Optional reference or transaction ID for your own tracking purposesExample: "ORDER-12345"

​
Response

​
status
string
required
Status of the API requestExample: "success"
​
message
string
required
Human-readable message describing the resultExample: "success"
​
data
object
required
The initiated payment transaction details

Authorizations

​
authorization
string
header
required

HMAC-SHA256 signature. Required headers: x-access-id, x-request-id (UUID), x-timestamp (ISO), authorization (HMAC signature)

Headers

​
authorization
string
required

Base64-encoded HMAC-SHA256 signature of the request payload using the API secret

​
x-timestamp
string<date-time>
required

Current timestamp in ISO 8601 format

​
x-request-id
string<uuid>
required

Unique identifier for the request (UUID v4)

​
x-access-id
string
required

Your API access ID provided by Tender

​
Content-Type
string
required

Media type of the request body

Path Parameters

​
currency
string
required

Fiat currency code (e.g., ngn, usd)

Body

application/json
​
amount
string
required

Payment amount in fiat currency

Example:

"1.023"

​
chain
string
required

Blockchain network

Example:

"avalanche"

​
currency
string
required

Cryptocurrency to receive

Example:

"avalanche"

​
reference
string

Optional reference or transaction ID for your own tracking purposes

Example:

"ORDER-12345"

Response

200 - application/json

Payment initiated successfully

​
status
string
​
message
string
​
data
object