Who should use this guideThis guide is intended for merchants who:
- Use Payrails as a payment orchestrator
- Use MODO to accept wallet payments in Argentina
- Have an active MODO merchant account
Create a MODO integration in Payrails
- Log in to the Payrails portal.
- Go to Settings → Integrations.
- Select Add instance to create a new integration configuration.
- Select the workspaces where this integration should be available.
About workspacesWorkspaces determine where this integration is available. They let you isolate provider setups by region or business line, or share the same configuration across multiple workspaces.
Step 1: Choose the integration type
- Select Payment.
- Continue to the next step.
Step 2: Choose the provider
- Select Modo.
- Continue to the next step.

Step 3: Configure your MODO integration
Integration instance name
An integration instance is a specific payment provider setup in Payrails. You can create multiple instances for different regions, currencies, or business needs. Choose a clear, consistent name, as it is used in routing.In Payrails
- Enter an Instance name for your integration, for example
merchant_modo.

Payment methods
In Payrails- Select Modo.

Credentials
In Payrails
Payrails sends requests to the MODO pre-production environment in test mode and to the live environment in live mode, so use the credentials for the matching environment.

Account details
In Payrails
Webhooks or notifications
Payrails sends its notification URL to MODO with every payment, so you don’t need to set one up with MODO. Payrails verifies each notification with the signing keys MODO publishes and also checks the payment status with MODO until it reaches a final state.Request fields for MODO
Send these fields in the authorize request, in addition to the standard authorize fields. Required fields must be present for the payment to succeed. Payrails sends Optional fields to MODO when you include them. For more about meta fields, refer to Meta fields.
MODO payments are captured straight away, so use instant capture in your workflow.
Configure MODO settings
Some MODO integration settings change how Payrails processes your payments. The portal shows the same description when you hover over each setting.Enable the integration
In Payrails- Select Save account to enable the integration.
- Confirm the integration shows as Enabled.
Next steps
- Run a test payment in ARS in the MODO pre-production environment, and pay it with the MODO app.
- Verify that:
- Your customer sees the MODO QR code or app link.
- The payment status updates correctly in Payrails.
- Once verified in test mode, repeat the setup in live mode.