Accept mobile wallet payments at your captive portal via MTN MoMo

How it works

MTN MoMo connects to Powerlynx via four credentials from your MTN developer account: API User, API Key, Subscription Key, and Target Environment. The currency is selected per location and MTN mobile number prefixes must be configured for the target country — for example, +21192 for South Sudan.

A Payment Server URL must be set in your MTN account: your Powerlynx URL followed by /mtn-pay/callback (for example, https://my.powerlynx.app/mtn-pay/callback). The Provider Callback Host must also be set to your Powerlynx domain. When a user selects MTN Pay at the captive portal and clicks the buy button, they are redirected to the MTN confirmation page to complete the payment.

Note: the Target Environment value varies by country — contact MTN MoMo support if you are unsure which value to use for your deployment country.

What this integration provides

• Mobile wallet payments via MTN subscriber number — no card or bank account required.
• Country-specific phone number prefix configuration per deployment.
• Callback-based payment confirmation — Payment Server URL registered in MTN account.
• Currency selection per location.
• Per-location MTN MoMo account configuration.
• Payments tracked under Finance / Payments in Powerlynx.

Countries covered

Benin, Congo, Cameroon, Ghana, Guinea, Guinea-Bissau, Liberia, Nigeria, Rwanda, Eswatini, Uganda, South Africa, Zambia, South Sudan.

Credentials required

API User, API Key, Subscription Key, Target Environment — from your MTN MoMo developer account.

Who uses this

Operators in markets where MTN mobile money is the primary payment method — standard for hotspot deployments in Uganda, Ghana, Rwanda, and Zambia.

Requirements

• MTN MoMo merchant account.
• API User, API Key, Subscription Key, Target Environment.
• Payment Server URL and Provider Callback Host registered in your MTN account.
• Country set to the target country under Config / System / Localization.

How to enable MTN Mobile Money payments at your Powerlynx captive portal — step-by-step guide.