Vantiv was a leading American payment processing and technology provider that merged with Worldpay in 2018, forming Worldpay from FIS. Vantiv provided integrated payment processing solutions for merchants, financial institutions, and businesses across eCommerce, in-store, and omni-channel payment scenarios. Their cnpAPI (formerly litleAPI) supported credit card authorizations, captures, sales, refunds, voids, tokenization, chargebacks, and recurring billing.
Website: https://www.vantiv.com Developer Community: https://developer.vantiv.com Current Platform: Worldpay from FIS
The Vantiv Card Not Present (CNP) API (formerly the Litle eCommerce API) enables online and mobile payment processing via XML over HTTPS POST.
- Documentation: https://developer.vantiv.com/community/ecommerce
- OpenAPI Spec: openapi/vantiv-cnp-openapi.yml
Programmatic access to chargeback and dispute management for merchants.
- OpenAPI Spec: openapi/vantiv-chargeback-openapi.yml
HTTP Basic Authentication using Vantiv-assigned merchant username and password credentials.
| Language | Repository |
|---|---|
| Java | Vantiv/cnp-sdk-for-java |
| Python | Vantiv/vantiv-sdk-for-python |
| PHP | Vantiv/cnp-sdk-for-php |
| .NET | Vantiv/cnp-sdk-for-dotnet |
| Ruby | Vantiv/cnp-sdk-for-ruby |
- openapi/vantiv-cnp-openapi.yml - Vantiv CNP eCommerce API
- openapi/vantiv-chargeback-openapi.yml - Vantiv Chargeback API
- rules/vantiv-rules.yml - API linting rules for Vantiv conventions
- capabilities/shared/vantiv-cnp.yaml - Shared per-API capability definition
- capabilities/payment-processing.yaml - Payment processing workflow (8 tools)
- Authorization - Verify funds and hold amount
- Sale - Authorize and capture in one step
- Capture - Settle a prior authorization
- Credit - Refund to cardholder
- Void - Cancel a pending transaction
- Register Token - Tokenize card via Vantiv Vault
- Recurring Transaction - Subscription billing against stored token
- eCheck Sale - ACH bank payment processing
FN: Kin Lane Email: kin@apievangelist.com
Profiled: 2026-05