Detailed technical benchmark and comparison between GT Pay (GTPay) API and Mono Connect API. Analyze pricing structures, verified webhooks, sandbox testing, authentication, and compliance for teams building in Nigeria.
Accept Verve card payments through a legacy gateway backed by GTBank
Link bank accounts to access transaction history & income data
GT Pay (GTPay) API is best for existing GTBank business customers and Nigerian e-commerce platforms that need a legacy payment gateway backed by Guaranty Trust Bank for accepting Verve, Visa, and Mastercard payments both locally and internationally.
Mono Connect API is best for nigerian lenders, neobanks, savings apps, and personal finance tools that need to link customer bank accounts for transaction history, income verification, direct bank debits (DirectPay), and identity verification all via one open banking API covering 30+ Nigerian financial institutions.
| Highlight | G GT Pay (GTPay) API | M Mono Connect API |
|---|---|---|
| Authentication | Merchant ID + Hash Key (obtained from GTBank branch) | Client Secret Key (passed as mono-sec-key in request headers) |
| Rate Limit | Not publicly specified | Not publicly specified |
| Sandbox Mode | ✓ Available | ✓ Available |
| Webhooks | ✗ Not supported | ✓ Supported |
| API Services | Card Payments (Visa / Mastercard / Verve)Bank Transfer / Pay by TransferUSSD PaymentsInternational / Multi-Currency Payments | Virtual Account & Account OpeningAccount Balance & Transaction HistoryDirect Debit / Mandate PaymentsBVN / KYC Identity Verification |
| Supported Regions |
| Fee Component | G GT Pay (GTPay) API | M Mono Connect API |
|---|---|---|
| Local Transactions / Cards | Local card transactions:1.5% capped at ₦2,000 | Contact provider |
| Free Tier / Trial Credits | Contact provider | Free sandbox available |
| Rates & Additional Terms |
|
|
Discover head-to-head comparisons between GT Pay (GTPay) API and Verto (VertoFX) API
Discover head-to-head comparisons between Mono Connect API and Verto (VertoFX) API
Discover head-to-head comparisons between GT Pay (GTPay) API and Bitmama API
Discover head-to-head comparisons between Mono Connect API and Bitmama API
Discover head-to-head comparisons between GT Pay (GTPay) API and Cellulant (Tingg) API
Discover head-to-head comparisons between Mono Connect API and Cellulant (Tingg) API