Sezzle
EcosystemBNPL platform for US and Canadian e-commerce merchants, offering pay-in-4 installments with no interest for consumers and full upfront payment to merchants.
Sezzle is a UCP payment handler, enabling secure payment processing for UCP transactions.
Sezzle is a buy now pay later platform focused on North American e-commerce. Consumers split purchases into four equal payments over six weeks. Sezzle pays the merchant in full upfront and collects installments from the consumer directly. The model reduces purchase friction without exposing merchants to repayment risk.
Sezzle is used by tens of thousands of small and mid-size merchants in the US and Canada. It integrates with Shopify, WooCommerce, BigCommerce, and other platforms via plugins. Merchants in fashion, home goods, health and wellness, and electronics use Sezzle to increase average order value and reduce cart abandonment from price sensitivity.
Sezzle has not announced UCP integration. Its merchant API and checkout SDK allow programmatic order creation and payment status tracking. For agents, the relevant flow is selecting Sezzle as the payment method at checkout on a merchant that has Sezzle enabled, which routes the order through Sezzle's installment infrastructure.
Why This Matters for UCP
Sezzle enables AI agents to surface BNPL payment options at checkout for North American consumers, supporting installment-based purchasing flows where agents select Sezzle as the payment method on compatible merchant checkouts.
UCP Capabilities
UCP Endpoint
Ecosystem — Endpoint not yet publicly available
Integration Example
// Sezzle Merchant API for order and payment status management.
// Agents can verify BNPL eligibility and retrieve order status.
// Authenticate and get a token
const auth = await fetch('https://gateway.sezzle.com/v2/authentication', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({
public_key: process.env.SEZZLE_PUBLIC_KEY,
private_key: process.env.SEZZLE_PRIVATE_KEY,
}),
}).then(r => r.json());
const token = auth.token;
// Retrieve an order to check installment status
const order = await fetch('https://gateway.sezzle.com/v2/order/' + orderId, {
headers: { Authorization: 'Bearer ' + token },
}).then(r => r.json());
// order.intent: 'AUTH' or 'CAPTURE'
// order.payments: array of scheduled installments with due dates
console.log('Installment schedule:', order.payments);Category
Payment HandlersUCP Status
EcosystemTags
Pricing
free
Is this your listing? Claim it to get analytics, a verified badge, and priority placement. Claim your listing →
Related Guides
Reviews
★★★★★4.7 (3 reviews)These are illustrative examples to show what reviews will look like. Submit your own experience below.
N. Bergman
Senior Backend Engineer · Feb 7, 2026
The UCP payment handling is correct. Latency is a bit higher than our non-UCP flows, but still within acceptable bounds for checkout.
A. Kim
Fintech Developer · Jan 25, 2026
Used this to add UCP checkout support to our app. The spec compliance is exact — everything we tested against the conformance suite passed.
C. Russo
Payments Engineer · Mar 2, 2026
Payment token exchange is solid. We process UCP transactions across multiple merchants and have not hit any protocol-level issues in three months.
37 other tools in Payment Handlers
Is this your tool? Claim this listing
Related Payment Handlers
Stripe
Payment Handlers
Payments infrastructure for the internet.
Payment infrastructure provider building UCP payment token exchange and checkout integration.
Integrations