Authentication uses two headers on every request: OMPAY-API-Key and OMPAY-API-Secret. You never send a payment method or provider — the gateway routes each card to the right provider by its BIN. Enter your OMPAY-API-Key and OMPAY-API-Secret above (from your own merchant account) and choose an endpoint on the left.
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Sent on every request. The secret is held server-side and shown masked.