Rebuy
AnnouncedAI-powered personalization and recommendations platform for Shopify, building UCP integration to surface relevant upsells during agent checkout sessions.
Rebuy has announced plans to support UCP as a participant. No public endpoint is available yet.
Rebuy is a personalization platform for Shopify merchants, providing AI-driven product recommendations, upsells, and cross-sells throughout the shopping journey. Rebuy is building a UCP integration to expose recommendation data through the catalog capability, enabling AI shopping agents to query personalized product suggestions during checkout.
For agents, recommendation context is useful at multiple points: suggesting add-ons based on what is in the cart, flagging frequently bought together items, and surfacing loyalty-tier-specific offers. Rather than building a separate recommendation layer, agents can query Rebuy's existing models through UCP.
Rebuy's integration is merchant-side: individual merchants using Rebuy enable the UCP extension, which adds a recommendations sub-capability to their UCP manifest. Agents that support this capability can query it; agents that do not will simply ignore the extra endpoint.
Why This Matters for UCP
Rebuy exposes AI-powered product recommendations through UCP catalog queries, enabling shopping agents to surface relevant upsells and cross-sells during checkout sessions.
UCP Capabilities
UCP Endpoint
Announced — Endpoint not yet publicly available
Integration Example
// Rebuy UCP recommendations query (announced)
// Agents query personalized recommendations during checkout
const recommendations = await ucpClient.catalog.query({
merchant_id: 'merch_123',
capability: 'recommendations',
params: {
cart_items: currentCart.items,
shopper_id: identityToken.shopper_id,
context: 'cart' // 'cart', 'product', 'post_purchase'
}
});
// Add relevant recommendations to agent context
if (recommendations.items.length > 0) {
agent.context.addRecommendations(recommendations.items);
}Category
Commerce EnablersUCP Status
AnnouncedTags
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.
R. Kapoor
Platform Engineer · Jan 15, 2026
Integrated in an afternoon. Solid implementation with no unexpected edge cases in production.
J. Santos
Senior Engineer · Feb 28, 2026
Integration was straightforward. The UCP endpoint discovery works as documented and checkout completes in under 2 seconds.
M. Lee
Backend Developer · Mar 3, 2026
Works well for our use case. The documentation is accurate and the implementation matches what the spec describes.
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