Ready to offer Buy Now, Pay Later (BNPL) payments? Follow this quick-start guide to set up your account and integrate BNPL services in just a few minutes!

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Step 1: Set Up Your Account

To get started, log in to your GreenBanana account. If you don’t have an account, sign up here.

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Step 2: Create Your API Key

After setting up your account, follow these steps to generate an API key:
  1. Access the Developer Dashboard
    Log in and navigate to the API Keys section under the Developers tab.
  2. Generate a New API Key
    Click Create New API Key and follow the prompts to generate your key.
    Note: Save this key securely as it will be required to authenticate your API requests.
For more detailed steps visit Get API Keys.

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Step 3: Connect Your Payment Processors

  1. Navigate to the Connectors Tab
    Visit the Connectors section in the dashboard to view the list of supported payment processors.
  2. Select and Configure Your Connectors
    Choose the payment processors that meet your business needs, input the necessary details (e.g., API keys), and select the payment methods to enable.

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Step 4: Test Your Payment Processor Integration

With your payment connector connected, use Postman or a similar tool to test the integration. Refer to the API Reference for a step-by-step guide on processing your first payment.
That’s it! You’re ready to start offering BNPL payments with GreenBanana.

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Start with Sandbox

Our sandbox is a fully functional environment built to mirror production. It lets you validate your integration end-to-end, including provider configuration, routing logic, and API requests — all without triggering real-world transactions. Getting Sandbox Access
  • Register for a developer account
  • Get your API keys from the dashboard
  • Configure your application with sandbox base URL
  • Start testing with our sample requests
Get your API Keys and Publishable Key

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Explore with Postman

Once you’ve obtained your API keys, dive right in with our public Postman collection, fully configured. What’s included:
  • Complete API endpoint examples
  • Pre-configured sandbox environment
  • Sample request payloads
Use our Postman Collection - BNPLx

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Moving to Production

Once your sandbox integration is solid, switching to production is simple:
  • Complete merchant onboarding and verification
  • Get production API credentials
  • Update base URL to “https://api.bnplx.io”
  • Deploy and monitor your first live transactions