N8N Tools - Cash App icon

N8N Tools - Cash App

Accept payments and manage transactions through Cash App Pay with extensible Square API integration
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Overview

The node integrates with the Cash App API to manage various financial and business-related resources such as payments, customers, products, subscriptions, invoices, loyalty accounts, gift cards, inventory, and reports. Specifically, for the Update Invoice operation, it allows users to update existing invoice information in their Cash App account.

This node is beneficial in scenarios where automated workflows need to modify invoice details dynamically, such as updating billing information, adjusting amounts, or changing invoice metadata based on external triggers or data changes.

Practical example:
A business could use this node to automatically update an invoice's details when a customer modifies their order or requests changes, ensuring that the invoice reflects the latest information without manual intervention.

Properties

Name Meaning
Invoice ID The unique identifier of the invoice to update. This is required to specify which invoice will be modified.
invoiceData (implied) An object containing the updated invoice fields and values. This property holds the new data to apply to the invoice.

Note: The provided input properties JSON only includes Invoice ID. However, from the source code, the update operation also expects an invoiceData object parameter containing the update details.

Output

The node outputs a JSON object representing the result of the update operation. The output structure includes:

  • resource: The resource type, here "invoice".
  • operation: The operation performed, here "updateInvoice".
  • success: A boolean indicating if the operation was successful.
  • creditsUsed and creditsRemaining: Numbers indicating API usage credits.
  • invoice: The updated invoice object returned by the Cash App API after the update.

Example output snippet:

{
  "resource": "invoice",
  "operation": "updateInvoice",
  "success": true,
  "creditsUsed": 1,
  "creditsRemaining": 99,
  "invoice": {
    /* Updated invoice details */
  }
}

The node does not output binary data.

Dependencies

  • Requires an API key credential for authenticating with the external Cash App API service.
  • Needs configuration of the API base URL and API key within n8n credentials.
  • Uses HTTP POST requests to validate operations before execution.
  • Relies on the bundled CashAppApi helper class for making specific API calls.

Troubleshooting

  • Common issues:

    • Invalid or missing Invoice ID: The node requires a valid invoice identifier; otherwise, the update will fail.
    • Incorrect or incomplete invoiceData: If the update data is malformed or missing required fields, the API may reject the request.
    • API authentication errors: Ensure the API key credential is correctly configured and has sufficient permissions.
    • Exceeding API usage limits: The node tracks credits used; hitting limits may cause failures.

  • Error messages:

    • "N8N Tools API validation failed": Indicates the initial validation call to the API failed, possibly due to invalid credentials or unsupported operation.
    • "Unknown invoice operation: updateInvoice": Should not occur if the operation is correctly specified; indicates a possible internal mismatch.
    • "Cash App operation failed: <message>": General failure message wrapping underlying API or network errors.

  • Resolutions:

    • Verify all required parameters are set and valid.
    • Check API key and endpoint configurations.
    • Review API usage quotas and limits.
    • Enable "Continue On Fail" in the node settings to handle errors gracefully in workflows.

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