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Developer overview

Card payments for Belize. Take Visa and Mastercard online, without building the integration yourself.

Verified 6 November 2026Explain this to your team →

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How it fits together

You create a payment_intent saying what you are charging, then a checkout_session, which gives you a URL. Your customer enters their card on a page hosted by the bank, so card details never reach your servers or ours. When the payment lands we send you a signed webhook.

That last part matters more than it looks: your webhook arrives once the payment is confirmed, even if a notification along the way goes missing.

Two rules that save time

Amounts are integers in the currency’s minor unit. 6000 is $60.00. No decimals cross the boundary in either direction, so there is nothing to round and nothing to argue about.

Test keys can never move real money. A key beginning sk_test_ operates on a separate set of books. Build the whole integration before anything is at stake.

Authentication

Send your secret key as a bearer token. That is the whole of it.

bash
curl https://api.secureprocessing.app/v1/payment_intents \
  -H "Authorization: Bearer sk_test_..."
A secret key is shown once, when it is created. We store only a hash, so we cannot show it to you again — if it is lost, roll it and update your integration.

Where to go next

The quickstart takes a payment in about five minutes.