Step-by-step guides to help you integrate Kvell into your application. From basic setup to advanced payment flows.
Create your account, grab API keys, and make your first signed request in minutes.
How Kvell's HMAC-SHA256 request signing works, with working signature examples in TypeScript, Python, and PHP.
Hosted checkout sessions, direct card charges, and the 3DS 2.0 challenge flow end to end.
Receive payment events, verify signatures, handle retries, and stay idempotent.
Offer Turkish card installments: BIN lookup, plan validation, and commission handling.
Onboard submerchants, split captures across sellers, and pay out to each seller.
Simulation mode, X-Sim-Scenario headers, test cards, and scripting full payment flows.
KYC onboarding, production keys, webhook hardening, and the pre-launch checklist.
Connect the Kvell docs MCP server to Claude, Cursor, or ChatGPT and build with llms.txt.
Our developer support team is available 24/7 to help you with integration questions, debugging, and best practices.
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