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PayLio for WHMCS

Card payments for WHMCS invoices.

Your clients pay hosting, VPS, domain and SaaS invoices by card on the PayLio checkout. The invoice is credited once and your WHMCS automation continues as usual.

Download v3.0.1Create a free account

Version 3.0.1 · 49 KB · GPL-2.0-or-later

Requirements

  • WHMCS 8.x
  • PHP 7.4 or newer with cURL
  • System URL on HTTPS
  • WHMCS cron running
  • A PayLio API key and a Polygon wallet

Installation

Live in a few minutes

Settings: System Settings › Payment Gateways › PayLio

  1. 1Download the module ZIP from this page.
  2. 2Upload its contents into your WHMCS root folder.
  3. 3Open System Settings › Payment Gateways › All Payment Gateways and activate PayLio.
  4. 4Paste your API key from Dashboard › API Keys and save. The connection is tested on save.
  5. 5Optional: choose provider, fee handling and a payout wallet.

What the plugin does

Built so every invoice is paid exactly once

Hosted checkout

Customers pay on the PayLio checkout. No card data reaches your server.

Verified payments

Signed webhook plus a server-to-server status check of amount and currency before the invoice is marked paid.

Automatic recovery

Scheduled status checks catch a missed webhook, and you can re-check any invoice from the admin.

USDC payouts

Payouts arrive as USDC on Polygon. Choose who pays the processing fee.

Settings

The same settings on every platform

Every PayLio plugin uses the same settings, so switching platforms or running several shops stays simple.

  • API key and connection test

    Paste the key from Dashboard › API Keys and check it with one click.

  • Payment provider

    Let the customer choose from all providers, or fix one. Minimum amounts are shown in the list.

  • Processing fee

    Include it in your price or add it to the customer's total.

  • Invoice handling

    Status after payment, automatic cancellation of unpaid invoices where the platform supports it.

  • Checkout look

    Title, description and payment icon, in English and German.

Which payment methods do customers get in WHMCS?

Customers pay by Visa or Mastercard, and with Apple Pay, Google Pay or local methods where the provider handling the payment supports them for the customer's country and amount. The PayLio checkout only shows the options that fit.

When is the invoice marked as paid?

Only after PayLio has confirmed the payment server-to-server. The plugin receives a signed webhook, asks the PayLio API for the payment status and checks amount and currency before it marks the invoice as paid. A lost webhook is caught by the plugin's scheduled status check.

What do I receive and when?

Your payout arrives as USDC on Polygon in the wallet from your PayLio dashboard, or in the payout wallet you set in the plugin. You can choose whether the processing fee is included in your price or added to the customer's total.

Does the customer come back to my shop after paying?

Yes. Once the payment is confirmed, the PayLio checkout shows a "Back to" button and returns the customer to the invoice page after a few seconds. That page checks the status itself, so arriving there never marks the invoice as paid.

Does card data touch my server?

No. The customer is redirected to the PayLio checkout and pays on the provider's page. Your shop only stores the PayLio payment id and status.

More integrations

PayLio works with the tools you already use

Also available for FOSSBilling, Paymenter and more, plus a REST API for custom backends.

All plugins