> For the complete documentation index, see [llms.txt](https://developers.cryptopay.me/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.cryptopay.me/guides/invoices/payment-links.md).

# Payment links

Merchants can use payment links instead of custom API integration to accept payments.

Payment link is a tool which can be flexibly integrated into payment and sales scripts. Payment link can create multiple invoices.

Examples of usage:

* The "Payment by Crypto" button from the shopping cart
* QR code for cryptocurrency payment on the web, a PDF or a paper version of the invoice
* Sending the payment link to an online chat while talking to the client.

Here is an example of a USDT payment link created via merchant account: <https://catalog-business-sandbox.cryptopay.me/items/AX0KTD>

### How to use the payment link

1. Log in to your Cryptopay Business account
2. Navigate to Integration → Online checkout
3. Generate a new key
4. Create a link with the required GET parameters
5. Provide a link to the customer to make a payment.

To create a link, please use the domain depending on the environment:

| Environment | URL                                                                                                |
| ----------- | -------------------------------------------------------------------------------------------------- |
| Sandbox     | [https://pay-business-sandbox.cryptopay.me](<https://pay-business-sandbox.cryptopay.me&#xA;&#xA;>) |
| Production  | [https://business-pay.cryptopay.me](<https://business-pay.cryptopay.me&#xA;&#xA;>)                 |
|             |                                                                                                    |

Here's example of a payment link created via widget key - <https://pay-business-sandbox.cryptopay.me/?widgetKey=2b581fc0-41ff-4864-8b25-a4b2b7514b8f&priceAmount=10&priceCurrency=USD>

### Parameters

<table><thead><tr><th width="197">Parameter</th><th>Type</th><th>Usage</th><th>Description</th></tr></thead><tbody><tr><td>widgetKey</td><td>string</td><td>Required</td><td>Your widget key</td></tr><tr><td>priceAmount</td><td>number (double)</td><td>Required</td><td>Purchase amount</td></tr><tr><td>priceCurrency</td><td>string</td><td>Required</td><td>Purchase currency</td></tr><tr><td>customId</td><td>string</td><td>Optional</td><td>Purchase reference ID in your system</td></tr><tr><td>successRedirectUrl</td><td>string</td><td>Optional</td><td>URL of the page the user will be redirected to if the payment is successful.</td></tr><tr><td>unsuccessRedirectUrl</td><td>string</td><td>Optional</td><td>URL of the page the user will be redirected to in case of an error.</td></tr><tr><td>description</td><td>string</td><td>Optional</td><td>Purchase description</td></tr><tr><td>name</td><td>string</td><td>Optional</td><td>Purchase name</td></tr><tr><td>locale</td><td>string</td><td>Optional</td><td><p>Can be <code>en</code>, <code>de</code>, <code>fr</code>, <code>es</code>, <code>pt</code>, <code>ru</code> and <code>jp</code> which means English, German, French, Spanish, Portuguese, Russian or Japanese language. </p><p>If parameter is not set, the language will be taken from the browser settings.</p></td></tr></tbody></table>