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Merchant Warrior is an Australian payment gateway offering secure card processing and payment solutions for businesses across multiple regions including Australia, New Zealand, and Asia-Pacific markets.

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Setup

Registration for Merchant Warrior is available through their website.

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Connector configuration

After signing up with Merchant Warrior, you can configure the connector in Gr4vy using one of the following methods:
  • Flow - Configure payment routing rules through your Gr4vy dashboard
  • API integration - Specify the payment_service_id when creating transactions to explicitly route payments to this connector

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Credentials

Configure the following credentials in the Gr4vy dashboard, which are obtained from your Merchant Warrior dashboard:
  • Merchant UUID - Your unique merchant identifier
  • API Key - Your API authentication key
  • API Passphrase - Your API authentication passphrase

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Features

Merchant Warrior supports the following features:
  • Delayed capture - Authorize a payment and capture it at a later time
  • Partial capture - Capture a portion of the authorized amount
  • Partial refunds - Refund a portion of the captured amount
  • Refunds - Refund a captured payment
  • Void - Cancel an authorized transaction before capture
  • Zero auth - Verify a card without charging it
  • Digital wallets - Support for Apple Pay, Google Pay, and other wallet integrations
  • Network tokens - Network tokenization is enabled by default
  • 3-D Secure - Pass-through 3DS authentication

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Supported countries

Merchant Warrior supports transactions from buyers in the following countries:
Country codeCountry codeCountry codeCountry code
AUGBHKIN
NZSGUS

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Supported currencies

Merchant Warrior supports processing payments in the following currencies:
Currency codeCurrency codeCurrency codeCurrency codeCurrency code
AUDCADCHFEURGBP
HKDJPYNZDSGDUSD

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Limitations

The following features are not supported by this connector:
  • Over capture - Capturing more than the authorized amount is not supported
  • Partial authorization - Partial authorization is not supported
  • Payment method tokenization - Storing payment methods outside of transactions using a separate tokenization flow
  • Transaction sync - Transaction status synchronization is not supported
Additional limitations include:
  • Dynamic statement descriptors - Statement descriptors passed through the API are not sent to Merchant Warrior. Ensure you have a suitable descriptor configured with Merchant Warrior directly.

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Integration

To accept card payments with Merchant Warrior, use one of Gr4vy’s client-side integration methods to securely collect card details. Due to PCI compliance requirements, card data should never be sent directly to your servers. You can integrate using:
  • Embed - A pre-built, customizable payment form that handles the complete payment flow
  • Secure Fields - Embed card input fields for building custom payment forms while maintaining PCI compliance
  • Mobile SDKs - Native SDKs for iOS, Android, React Native, and other platforms
These methods handle card data collection and tokenization. Once the card details are collected and tokenized, create a transaction through the Gr4vy API, which routes the payment to your configured Merchant Warrior connection based on your Flow rules or explicit payment_service_id parameter.

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Required fields

Merchant Warrior requires the following buyer information for all transactions:
  • First name
  • Last name
  • Email address
  • Billing address (including line 1, city, state, postal code, and country)
If values are not provided for email or address fields, Gr4vy automatically populates them with placeholder values (NA for address fields and NA@example.com for email). However, it’s highly recommended to provide actual values when available.

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Recurring payments

When initiating a new recurring payment series, the CVV (Card Verification Value) is mandatory. For subsequent transactions within the same recurring series, the CVV is no longer required.