Cryptomus

What you need

From Cryptomus → Business → Merchants, for your merchant:

• merchant_id
• api_key (Payment API key)

In your panel choose Settings → Payments → Add method → Cryptomus and enter both.

You do not need to configure a callback URL in the Cryptomus panel: the panel attaches its own callback URL to every invoice it creates:

https://<your-panel-domain>/payments/cryptomus/callback

Flow

1. The customer enters an amount and picks Cryptomus.
2. A Cryptomus invoice opens; the customer pays in the coin of their choice.
3. Cryptomus sends the callback; the signature is verified and the balance is credited.
4. An underpayment stays "partial" on Cryptomus's side and credits nothing; the customer can send the remainder to the same invoice.

Cryptomus's fee is taken from your Cryptomus account; the panel balance is credited with the invoice's full amount.

If you would rather have no intermediary, use the built-in method that pays straight into your own wallet.