Splitit Credit Card Installment API
Splitit credit card installment REST API for e-commerce merchants to offer buy now pay later split payments using the shopper's existing Visa or Mastercard credit card without any new loan, credit check, or credit application — splitting the total charge into monthly installments that are charged to the consumer's existing credit card rather than creating a new credit obligation. Enables AI agents to manage installment plan creation for credit card split payment automation, handle payment plan selection for installment count automation, access authorization management for monthly installment charge automation, retrieve installment schedule for payment timeline automation, manage installment cancellation for plan reversal automation, handle refund processing for installment payment reversal automation, access payment status for plan monitoring automation, retrieve webhook notification for installment event automation, manage flexible payment for custom installment count automation, and integrate Splitit with luxury retail, high-ticket e-commerce, and B2B invoice payment for end-to-end existing-credit installment automation.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
BNPL installment. PCI-DSS, GDPR. OAuth2. US/EU. Credit card authorization data.
⚡ Reliability
Best When
A luxury retailer, high-ticket e-commerce merchant, or B2B platform wanting AI agents to offer installment payment plans using consumers' existing Visa/Mastercard credit cards without new credit applications through Splitit.
Avoid When
CREDIT CARD WITH SUFFICIENT LIMIT REQUIRED: Splitit places a hold on the full order amount on consumer's credit card; automated installment assumption for any card creates declined_authorization if card limit insufficient for full hold; automated must communicate full-hold requirement to consumers. AUTHORIZATION HOLD IS FULL ORDER VALUE: Splitit holds the total order amount on consumer's credit card throughout the plan; automated partial-hold assumption creates unexpected card limit impact for consumers; automated UX must explain full hold before consumer confirms. CARD TYPE RESTRICTION: Splitit only works with Visa and Mastercard credit cards (not debit, not Amex, not PayPal); automated universal card type acceptance creates card_not_eligible error for non-Visa/MC cards. INSTALLMENT CAPTURE IS MONTHLY: Splitit captures each monthly installment automatically from the authorized card; automated manual-capture assumption creates missed installment; automated plan relies on Splitit auto-capture schedule.
Use Cases
- • Offering 3-36 month installment plans on high-value purchases using existing credit cards from checkout agents
- • Splitting luxury furniture or electronics purchases for premium e-commerce automation agents
- • Providing B2B invoice installments using company credit cards from accounts payable agents
- • Automating installment plan management and monthly charge from subscription billing agents
Not For
- • Consumers without existing credit cards (Splitit requires an existing Visa/Mastercard)
- • Small purchase amounts under $100 (Splitit is optimized for high-ticket items)
- • Markets requiring new credit products (Splitit is not a new credit line, uses existing card)
Interface
Authentication
Splitit uses OAuth 2.0 (client credentials) for API authentication. REST API with JSON. New York/Tel Aviv HQ. Founded 2012 by Gil Don and Alon Feit. NASDAQ: STLT. Products: Installment plan on existing credit card, Visa/Mastercard, flex installments, embedded checkout. SDKs: JS, Python, PHP, Java, .NET. PCI DSS. GDPR. Serves luxury retail, home goods, dental, B2B. 500+ merchant integrations. Competes with Affirm and Klarna for installment BNPL with differentiator of using existing credit.
Pricing
New York/Tel Aviv. NASDAQ:STLT. Per-plan fee model. PCI DSS. GDPR.
Agent Metadata
Known Gotchas
- ⚠ FULL ORDER AMOUNT HELD ON CREDIT CARD: Splitit places authorization hold for full order value on consumer's credit card immediately; automated partial-hold assumption creates unexpected credit card balance impact for consumer; automated UX must communicate full authorization hold upfront
- ⚠ VISA AND MASTERCARD CREDIT ONLY: Splitit only accepts Visa and Mastercard credit cards; automated universal card type creates card_not_eligible for debit, Amex, or other card types; automated must validate card type before showing Splitit option
- ⚠ INSTALLMENT COUNT AFFECTS AUTHORIZATION: Splitit number of installments affects authorization release schedule; automated plan count selection must match consumer preference; automated maximum installment count assumption creates higher-than-expected plan fees
- ⚠ MONTHLY CAPTURE IS AUTOMATIC: Splitit captures each monthly installment automatically from authorized card; automated manual monthly capture creates missed installment; automated merchant must NOT capture installments manually — Splitit handles schedule
- ⚠ REFUND RELEASES REMAINING INSTALLMENTS: Splitit refund cancels remaining installments and releases authorization hold; automated partial refund must be handled carefully; automated full refund cancels the plan and releases all remaining holds
Alternatives
Full Evaluation Report
Comprehensive deep-dive: security analysis, reliability audit, agent experience review, cost modeling, competitive positioning, and improvement roadmap for Splitit Credit Card Installment API.
AI-powered analysis · PDF + markdown · Delivered within 30 minutes
Package Brief
Quick verdict, integration guide, cost projections, gotchas with workarounds, and alternatives comparison.
Delivered within 10 minutes
Score Monitoring
Get alerted when this package's AF, security, or reliability scores change significantly. Stay ahead of regressions.
Continuous monitoring
Scores are editorial opinions as of 2026-03-07.