-
-
Landing page
Inspiration
Help buyers discover and act on the most attractive time-sensitive financing offers across multiple merchants before the window closes.
What it does
PayLater Pulse is a multi-merchant shopping discovery application that surfaces highly relevant products to buyers only when those products currently offer PayPal payment terms (Pay Later / installments / deferred payments) and the offer remains valid if the purchase is completed within approximately one week.
How we built it
The product combines three core technologies: PayPal Sandbox / Live APIs — for real payment-term verification and checkout Elasticsearch — for fast product search, filtering by financing window, and ranking OpenAI — for personalized ranking and generation of persuasive, benefit-focused recommendation copy
Challenges we ran into
Setting up Sandbox account and making sure personal mode is used. First id and secret did not work. Elastic container in docker performance was slow, so I had to tune docker config OpenAI did not work because I had an extra space in key.
Accomplishments that we're proud of
User can browse products filtered by active financing window
AI suggestions page returns ranked products with generated reasons in less than seconds “Buy with PayPal” successfully creates a Sandbox order and redirects to approval Seed script loads 4 merchants + 15–20 products with realistic financing expiry dates
What we learned
Product Discovery & Filtering AI-Powered Suggestions Multi-Merchant Support PayPal Checkout Integration
What's next for PayLater Pulse
Real-time PayPal financing eligibility per buyer and cart amount Order capture + webhook handling after buyer approval User accounts, saved preferences, and personalized embedding store Merchant onboarding portal and product ingestion APIs Email / push digests of “expiring this week” personalized deals A/B testing of OpenAI-generated copy variants Hybrid search with OpenAI embeddings stored in Elasticsearch
Built With
- elastic
- javascript
- openai
- sandbox
