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Sell your products using our Merchant API in a safe, secure and realiable way.

Our Crypto Merchant API will provide you with a way to sell your products without the need of a messy code implementation. With our API, the only thing you need to do is to create your invoice. After the invoice has been paid, you will be notified by email and/or callback.

Your payments are forwarded according to your vendor settings to prevent any unwanted scenarios.
Crypto rates are valid for 30 minutes.

A small fee is taken automatically before system forwards the payment, we use those fees to keep the services up and running.

The minimum supported transaction size is 1 "your fiat currency here". Forwarding transactions will include a network fee paid from the amount you received.

In high fee times for Bitcoin, please try to generate transactions larger than the fee itself. :)

Plugin Installation

  1. Download the plugin from our plugins page for your CMS version.
  2. If you haven’t done so already, head over and sign up and create a merchant account.
  3. if you need help installing the plugin, you can read our integration guide for Wordpress, Opencart, WHMCS


Our rates are updated every 5 minutes.

Generating Invoices

Please use the following link to register for a Litepay Merchant account.

Once you registered, go to Vendor page, and create your VendorID. Fill in all the required fields and double check. At the moment we provide checkout plugins only for WORDPRESS (WOOCOMMERCE), WHMCS and OPENCART but we are currently working on adding more plugins.

If you wish us to help you incorporate the Merchant API in your system, contact us through email, Telegram or Discord.

If you want to create your own plugin, you can send a POST request to our API servers, with the following information:

method: POST
data required:

vendor  = vendor id #(required)
invoice = invoice number you generated #(required)
secret  = SecretKey needed to confirm that you are said vendor #(required)
price   = price of the invoice #(required)
currency = currency of the invoice. #(optional, defaults to USD)
email   = Buyers email. #(optional)
callbackUrl = a callback url where you can receive callbacks from our system. (urlencoded) #(required)
returnUrl   = a returnUrl for us to send the client to after the payment. (urlencoded) #(required)

A correct input of data will return a JSON response with the status of the POST REQUEST. If the status of the request is success, you will get a second variable named url, which contains the url of the invoice. Your code must redirect the user to the url received.
A request that is incomplete will result in the status being error and the next variable being message, which will contain the error message.

An example successful invoice:

status : success
url :

An example of a error returned by the API

status: error
message: You did not send the vendor / invoice  / secret / price / callbackUrl /  returnUrl , try again.

The API is still under development. Information can and will change.

For automated shops, using our plugins listed above, the POST will be done automatically and the client will be redirected to our payment system. If the invoice is already in our system, the buyer will be redirected to the existing invoice.

If you want to use the VENDOR ID on more than one website, make sure that your invoice # is not duplicated.

Invoices are permanent, once created they can't be modified or deleted. That being said, when using your vendor id on multiple website, make sure the invoice numbers don't match the already created ones. If you have more questions about this, you can contact us.

Already created invoices won't change, if you are testing our plugins make sure you always test with a new invoice.

Once the invoice has been paid, our system will send you an email confirming that.

This is how the email might look like:

Subject: Merchant | Invoice Example-818 has been paid!


Hello, Coffee Shop
Invoice number #Example-818 has been paid.

Payment information:
Used BTC address : 3LNUEC3cCMqXCr5yhLDxjv1BhYrnhzGmXP
Amount:  0.004546 BTC / ~32 USD
TxID: a781b7bccbee0c1ea5b2f4c3ddca4c7396b4508f3067e0a4bf644a19e68db8ce
TxTime: 2017-11-01 22:35:45
Status: Payment has 0 confirmations

Best Regards, Team
Thank you for using
Support is available at:


Callback is sent once the payment has been received and has the necesary number of confirmations.

If you are using Cloudflare service, make sure you are allowing our GET request, if you do not receive callbacks from us, check your cloudflare rules first.

Make sure our ip is whitelisted

Address Expiration

Crypto Addresses will expire once the invoice has been paid. Unpaid/Paid invoices expire after 30 days since their creation.

Incomplete payments

In the event of a incomplete payment (a user sends less than the required amount and doesn't follow up with the rest of the payment), we are required to refund your transaction in 30 days since that payment was made.

If 30 days have passed, we will consider that payment a donation.

Please contact us at with your payment information if you are in such a pickle.