Stablecoin On-Ramp & Off-Ramp Infrastructure

Fonbnk provides B2B on-ramp and off-ramp infrastructure that enables wallet applications, dApps, and crypto platforms to offer stablecoin purchase and sale to users in Africa and the Global South using local mobile payment methods.

Product Overview

The Fonbnk PayWidget is a zero-code embeddable widget that integrates into any wallet or app, allowing end users to buy (on-ramp) and sell (off-ramp) USDT using local payment rails including mobile money (M-Pesa, MTN Mobile Money, Airtel Money), airtime top-ups, and bank transfers. The Merchant API provides full server-to-server programmatic control over on-ramp and off-ramp transaction flows for advanced integrations. Both sandbox and production environments are available.

Key Features

• Embeddable PayWidget with zero-code configuration for instant deployment
• Full server-to-server API with Postman collection and webhook event support
• USDT support across 12 blockchain networks: Base, Polygon, Stellar, Solana, Ethereum, TON, Celo, Avalanche, Arbitrum, Lisk, Optimism, and Tron
• Coverage across 15+ African countries including Nigeria, Kenya, Uganda, Ghana, South Africa, Tanzania, Senegal, Ivory Coast, Cameroon, Benin, Rwanda, and Zambia
• Real-time FX rates with chargeback-free, riskless settlement
• Merchant dashboard for integration configuration and order monitoring

Use Cases

Fonbnk's on-ramp/off-ramp infrastructure is trusted by wallets and platforms including Opera, MetaMask, Trust Wallet, Brave, Cenoa, and Onramper, enabling their African users to access the stablecoin economy using the payment methods they already use daily.