Crypto top-ups

Add credit to your account with cryptocurrency. Payments are final (no chargebacks), confirmations are fast, and there’s no card or subscription. Your balance is held in USDT, a dollar-pegged stablecoin. Whatever you fund with is converted to USDT at the confirmed rate, so your balance holds a steady value.

Supported methods

Method	`method` value	Notes
USDT	`usdt`	Held as-is. No conversion, lowest minimum. Recommended.
Bitcoin	`btc`	Converted to USDT on confirmation.
Ethereum	`eth`	Converted to USDT on confirmation.
Solana	`sol`	Fast and low fee, converted to USDT.

Create a top-up

curl https://api.heyaskr.ai/topup/create/usdt \
  -H "Authorization: Bearer ASKR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "amount": 10, "currency": "USD" }'

The response contains an address to pay (or a payment URI) and an invoice_id.

Check the status

curl https://api.heyaskr.ai/topup/status/INVOICE_ID \
  -H "Authorization: Bearer ASKR_API_KEY"

Poll until the status is paid. Your balance updates automatically once the payment confirms.

Create the invoice

Call topup/create/{method} with an amount.

Show it to the user

Render the address or payment URI as a QR code.

Poll the status

Check topup/status/{id} until it’s paid.

Balance updates

Credit is added in USDT; the user can start spending.

Fund with BTC, ETH or SOL and it’s converted to USDT at the confirmed exchange rate, so your balance holds a stable dollar-pegged value.

⌘I

Getting started

Core concepts

Capabilities

Billing

Guides

Crypto top-ups

Supported methods

Create a top-up

Check the status

​Supported methods

​Create a top-up

​Check the status

Supported methods

Create a top-up

Check the status