Rebilly
EcosystemPayments OS and subscription billing API designed for high-volume merchants, providing payment orchestration, recurring billing, and fraud tools through a single developer-focused API.
Rebilly is a UCP payment handler, enabling secure payment processing for UCP transactions.
Rebilly is a payments operating system and subscription billing API targeted at high-volume merchants and platform businesses. It provides payment orchestration across multiple gateways, recurring billing, subscription management, and fraud detection through a single REST API. Rebilly positions itself as a developer-first platform, with comprehensive API coverage and an emphasis on customization over out-of-the-box UI.
For UCP, Rebilly's payment orchestration capability is the primary point of relevance. Merchants using Rebilly as their payment layer can route transactions through multiple gateways based on cost, approval rate, or geography. When an agent initiates a purchase via UCP, the payment token exchange would interact with Rebilly's orchestration layer, which then selects the optimal gateway for the transaction.
Rebilly has not announced UCP integration, but its API design aligns well with programmatic commerce. The platform supports customer vault management, which handles stored payment methods in a way that maps to UCP's payment token concept. Developers building high-volume agent commerce applications may find Rebilly's gateway orchestration and billing flexibility more suitable than single-gateway alternatives.
Why This Matters for UCP
Rebilly provides payment orchestration and subscription billing for high-volume merchants, routing agent-initiated transactions across multiple gateways and managing recurring billing through a developer-first API.
UCP Capabilities
UCP Endpoint
Ecosystem — Endpoint not yet publicly available
Integration Example
// Rebilly API for payment orchestration and subscription billing.
import Rebilly from 'rebilly-js-sdk';
const api = Rebilly.getClient({ apiKey: process.env.REBILLY_API_KEY });
// Create a customer and store a payment instrument
const customer = await api.customers.create({ email: buyerEmail });
const paymentInstrument = await api.paymentInstruments.create({
method: 'payment-card',
customerId: customer.fields.id,
paymentCard: { pan: cardNumber, expYear, expMonth, cvv },
});
// Create a subscription with the stored instrument
const subscription = await api.subscriptions.create({
customerId: customer.fields.id,
items: [{ plan: { id: planId }, quantity: 1 }],
paymentInstrumentId: paymentInstrument.fields.id,
});Category
Payment HandlersUCP Status
EcosystemTags
Pricing
paid
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Reviews
★★★★★4.7 (3 reviews)These are illustrative examples to show what reviews will look like. Submit your own experience below.
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.
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.
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