Description
PayNexus Payment Gateway lets you accept M-Pesa mobile money payments on your WordPress website. Money flows directly from the customer to your own M-Pesa payment account — PayNexus never holds or delays your funds.
Features:
- M-Pesa STK Push — Customers receive a payment prompt on their phone
- WooCommerce integration — Full checkout gateway for WooCommerce stores
- Shortcode support — Embed payment forms on any page with
[paynexus_payment_form] - Real-time polling — Automatic status updates without page refresh
- Webhook support — Receive instant payment notifications via REST API
- Admin dashboard — View and filter all payments from WordPress admin
- Secure — HMAC-SHA256 webhook signature verification with replay protection
- Local records — Every payment is stored locally for your records
How It Works:
- Customer enters their phone number and amount
- PayNexus sends an M-Pesa STK Push to the customer’s phone
- Customer enters their M-Pesa PIN to confirm payment
- Payment status is updated automatically via webhook
- WooCommerce orders are marked as paid automatically
Installation
- Download the plugin ZIP file
- Go to Plugins Add New Upload Plugin in WordPress admin
- Upload the ZIP file and click Install Now
- Activate the plugin
- Go to PayNexus Settings to enter your API keys
- For WooCommerce: enable the gateway at WooCommerce Settings Payments M-Pesa (PayNexus)
Getting API Keys:
- Sign up at paynexus.co.ke
- Go to Merchant Dashboard API Keys
- Copy your Secret Key (sk_…) and optionally the Public Key (pk_…)
FAQ
-
Does PayNexus hold my funds?
-
No. PayNexus is a payment orchestrator. Money flows directly from the customer to your own M-Pesa payment account.
-
Do I need WooCommerce?
-
No. You can use the
[paynexus_payment_form]shortcode on any page without WooCommerce. WooCommerce integration is optional. -
What phone number format should customers use?
-
Kenyan phone numbers in the format 254746990866 (with country code, no +).
-
How do I receive webhook notifications?
-
Set your webhook URL to
https://yoursite.com/wp-json/paynexus/v1/webhookin the PayNexus dashboard.
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Contributors & Developers
“PayNexus Payment Gateway” is open source software. The following people have contributed to this plugin.
Contributors
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Changelog
1.0.2
- Updated plugin to meet WordPress plugin standards
1.0.1
- Fixed security vulnerabilities
1.0.0
- Initial release
- M-Pesa STK Push payment initiation
- WooCommerce payment gateway
- Payment form shortcode
- Payment status shortcode
- Admin settings page
- Admin payments list
- Webhook handler with HMAC verification
- Real-time JavaScript status polling