# Voucher (discount code)

The voucher (discount code) feature is a promotional tool that allows customers to enter a code during the checkout in their Shopping cart to receive a discount on their purchase.

When adding a voucher to the Shopping cart, check if it's available.

[This API call](https://demo.theshop.dev/api-documentation/v1#/voucher/c1d082164d07f7e24dbb0fa6a79a8846) checks if a voucher is available.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://wiki.theshop.dev/docs/frontstore/basic-selling-flow/shopping-cart-basket/voucher-discount-code.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.