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Mobiamo In-App Payments (SDK)

Please use Mobiamo Android SDK, which is the SDK wrapper for this API.

API Description

Mobiamo API allows merchants to charge users via mobile carrier billing by using Paymentwall's API and merchant's own payment forms.

This API is activated by request. To activate it please email us at

This API powers steps 2 and 3 on the payment flow below.

Payment Flow

Initializing a payment

API Endpoint

Request type


Protocols supported


Request Parameters

Parameter Description
uid ID of the end-user who's making the payment in Merchant's system
key Project Key provided by Paymentwall
product_name name of the product purchased by the user
product_id ID of the product purchased by the user
amount pricepoint amount, e.g. 9.99
currency pricepoint currency code, e.g. EUR
country pricepoint country code, e.g. DE
mnc Mobile Network Code, needed along with mcc to identify user's carrier and provide relevant instructions
mcc Mobile Country Code
ts unix timestamp when the request was initiated, in seconds
sign request signature, for more details on signature calculation click here
sign_version version of signature, required to be at least 2

Response Parameters:

Parameter Description
transaction_id id of the order
keyword keyword to be sent in the MO SMS message
shortcode a number where the MO SMS message needs to be sent
regulatory_text text, required by carriers to be shown to the user before purchasing

Billing the user

User then needs to send an MO SMS to the given shortcode with the following text: keyword transaction_id

If the merchant has access to sending text messages on behalf of the user, e.g. an Android Application, the message can be sent automatically.

Payment Confirmation

Once the payment is processed, Paymentwall will send a server-to-server pingback to merchant's server. The format of the pingback matches Digital Goods API.

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