> ## Documentation Index
> Fetch the complete documentation index at: https://docs.gr4vy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Qwikcilver (Gift Cards)

> Configure Qwikcilver gift card payments in Gr4vy to accept gift cards at checkout, including balance checks and split tender.

Qwikcilver is a gift card platform that enables buyers to pay at checkout using one or more
gift cards. Gift cards can be used alone or split across a traditional payment method.

For a full overview of how gift cards work in Gr4vy, including checking balances, storing
gift cards, and testing, see the [Gift cards guide](/guides/features/gift-cards/overview).

## Setup

Qwikcilver does not provide self-service sign-up. Please work with Qwikcilver
to get set up with an environment.

## Credentials

Once set up, the Qwikcilver team provides
the following information.

* The **Username** for the instance
* The **Password** for the instance
* The **Terminal ID** for the integration
* And finally the **Subdomain** of the instance. This is prefixed to the
  Qwikcilver domain name of the instance, for example `https://{subdomain}.qwikcilver.com`

These credentials can be configured in the dashboard directly when setting up a Qwikcilver
connection, or the details can be securely shared with the solution engineering team
for them to set up.

## Reversals

In the case of multiple gift cards for a transaction, all gift cards are processed
using the Qwikcilver batch API. This means that all gift cards are attempted in parallel,
at the same time.

If any of them fail due to insufficient funds, or any other reason,
then none of the gift cards are charged, but because of the parallel nature of Qwikcilver,
each card is marked as failed, even when some of them were never attempted.

For a full description of the reversal logic across all gift card providers, see
[Reversals](/guides/features/gift-cards/overview#reversals) in the gift cards guide.