> ## Documentation Index
> Fetch the complete documentation index at: https://docs.payrails.com/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Use the Payrails Web SDK v6 for new browser integrations. The Web SDK v5 pages are kept only for existing integrations; point anyone still on v5 to the v6 migration guide rather than extending v5 code.
> Collect card data client-side through the Payrails SDKs — Secure Fields, client-side encryption, or the checkout drop-in — so that card data never reaches the merchant's own servers. Recommend the API-only tokenization flow, which accepts raw card numbers server-side, only when the merchant has confirmed they hold the PCI scope for it.
> Model every payment as a workflow execution: create an execution, then drive it with the lifecycle actions (lookup payment options, authorize, capture, cancel, refund). Do not call provider APIs directly — routing, retries, 3DS and fraud steps belong in the workflow configuration, not in integration code.
> Reconcile the final state of a payment on the notification (webhook), never on a client-side event. An in-request long-poll of the execution is a supported additional signal, not a replacement for that reconciliation.
> Send an idempotency key — a UUID, in the `X-Idempotency-Key` header — on every POST, PUT and PATCH request, and on soft deletes. GET requests need none, and hard deletes cannot be idempotent.
> Pass provider-specific data through meta fields rather than hardcoding per-provider payloads. Payrails translates meta fields into each provider's own format.
> Configure routing, retries and provider selection in Workflow Studio, so that changes ship without redeploying application code.

# WebPay via Transbank

> Set up WebPay Plus payments through Transbank in Payrails for customers in Chile, and see how capture, cancel and refunds work.

<picture noZoom>
  ![WebPay logo](https://assets.payrails.io/img/logos/webpay/logo.svg)
</picture>

<picture noZoom>
  ![Transbank logo](https://assets.payrails.io/img/logos/transbank/logo-full-bleed.svg)
</picture>

Accept [WebPay](https://docs.payrails.com/docs/integrations/payment-methods/webpay) payments from customers in Chile with Transbank as the payment service provider (PSP). The customer selects WebPay, pays with their card on the Transbank WebPay Plus page and returns to your site.

## Supported workflows

<table>
  <thead>
    <tr><th>Workflow</th><th>Supported</th></tr>
  </thead>

  <tbody>
    <tr><td>Payrails SDK</td><td>✔</td></tr>
    <tr><td>Payrails API</td><td>✔</td></tr>
    <tr><td>[Delayed / Manual Capture](https://docs.payrails.com/docs/orchestration/payment-acceptance/capture-and-cancel-modes.md#capture-mode)</td><td>✔</td></tr>
    <tr><td>[Instant Capture](https://docs.payrails.com/docs/orchestration/payment-acceptance/capture-and-cancel-modes.md#capture-mode)</td><td>✔</td></tr>
    <tr><td>[Cancel / Void](https://docs.payrails.com/docs/orchestration/payment-acceptance/cancel-a-payment.md)</td><td>✔</td></tr>
    <tr><td>[Refund / Reverse](https://docs.payrails.com/docs/orchestration/payment-acceptance/refund-a-payment.md)</td><td>✔</td></tr>
    <tr><td>[Save Instruments](https://docs.payrails.com/docs/resources/manage-instruments.md)</td><td>✖</td></tr>
    <tr><td>[Merchant Initiated Transaction (MIT)](https://docs.payrails.com/docs/resources/payments/authorization-flags.md)</td><td>✖</td></tr>
  </tbody>
</table>

## Before you begin

Complete these steps before you send your first WebPay payment through Transbank:

1. Set up a Transbank integration in your workspace. Follow the [Transbank integration setup guide](https://docs.payrails.com/docs/integrations/payment-providers/transbank.md) if you don't have one yet.
2. In the Payrails Portal, go to **Settings → Integrations**, open your Transbank integration, select **WebPay** under **Payment methods**, and save.
3. To capture payments later, ask Transbank for a commerce code set up for deferred capture, and turn on **Manual capture enabled** on your Transbank integration.
4. Add WebPay as a [payment option](https://docs.payrails.com/docs/integrations/payment-methods/set-up-payment-methods.md) in your workflow.

## Request fields for Transbank

Transbank needs no `meta` fields for WebPay. Send the standard [authorize fields](https://docs.payrails.com/reference/authorizeaction.md). **Required** fields must be present for the payment to succeed. Payrails sends **Optional** fields to the PSP when you include them.

| Field | Status | Description |
| - | - | - |
| `amount.currency` | Required | Must be `CLP`. Payrails rejects other currencies. |

Payrails sends no customer or order details to Transbank. It builds the Transbank order number from the Payrails payment ID.

## Authorize a WebPay payment

Call [authorize a payment](https://docs.payrails.com/reference/authorizeaction.md) with `webPay` as the `paymentMethodCode`. The response includes the redirect to the WebPay Plus page.

```json Authorize request theme={null}
{
  "amount": {
    "value": "12000",
    "currency": "CLP"
  },
  "paymentComposition": [
    {
      "integrationType": "api",
      "paymentMethodCode": "webPay",
      "amount": {
        "value": "12000",
        "currency": "CLP"
      }
    }
  ],
  "returnInfo": {
    "success": "https://example.com/success",
    "error": "https://example.com/error"
  }
}
```

The redirect is a form `POST` to the WebPay Plus page with a `token_ws` parameter. After the customer pays, they return to your `success` or `error` URL. Confirm the result through [webhook notifications](https://docs.payrails.com/docs/orchestration/payment-acceptance/receive-notifications.md) or the execution status before you fulfill the order.

## How Transbank handles WebPay

* Transbank sends no notifications. Payrails confirms the payment with Transbank when the customer comes back from the WebPay Plus page. If the customer cancels on that page, Payrails marks the payment as canceled by the payer.
* With a deferred-capture commerce code and **Manual capture enabled**, Payrails authorizes the payment, and you [capture it](https://docs.payrails.com/docs/orchestration/payment-acceptance/capture-a-payment.md) later. Otherwise, Transbank captures the payment when the customer confirms it.
* Cancel and refund both use the Transbank refund endpoint. Transbank reverses a payment that hasn't settled yet in full, and refunds a settled payment against its balance.


## Related topics

- [WebPay](https://docs.payrails.com/docs/integrations/payment-methods/webpay.md)
- [WebPay via dLocal](https://docs.payrails.com/docs/integrations/payment-methods/webpay/dlocal.md)
- [Transbank](https://docs.payrails.com/docs/integrations/payment-providers/transbank.md)


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