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POST
/
v2
/
billing
/
prepay
Prepay with Crypto
curl --request POST \
  --url https://api.tusky.io/v2/billing/prepay \
  --header 'Content-Type: application/json' \
  --data '
{
  "amount": "<string>"
}
'
{
  "paymentId": "<string>",
  "amount": "<string>",
  "txHash": "<string>",
  "newBalance": "<string>"
}
Prepay for Tusky services by depositing SUI tokens via the x402 protocol. The payment is settled on-chain and credited to your managed wallet balance.

​
Request Body

​
amount
string
required
Amount of SUI to deposit (e.g., "10.0").

​
Response

​
paymentId
string
Payment transaction ID.
​
amount
string
SUI amount deposited.
​
txHash
string
Sui blockchain transaction hash.
​
newBalance
string
Updated SUI balance after deposit.

​
Example

curl -X POST https://api.tusky.io/v2/billing/prepay \
  -H "Api-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"amount": "10.0"}'

​
Response

{
  "paymentId": "pay_xyz789",
  "amount": "10.0",
  "txHash": "0xabcdef1234567890...",
  "newBalance": "55.2"
}
This endpoint uses the x402 protocol for HTTP-native crypto payments. The Tusky SDK handles the x402 payment flow automatically.