Coupon Genius

Coupon Genius is an automatic coupon application system that runs inside a browser extension. When a shopper reaches a store’s checkout, it applies the codes configured for that store and keeps the one that reduces the total. It behaves the same on desktop and mobile, in any browser and on any operating system, and it runs on the coupons you already have

Per-store configuration

Every store that gets covered has its own configuration describing how that checkout behaves. Checkout pages differ enough that this cannot be generalised — the configuration is what lets one module work across stores that share nothing structurally

Applying codes at checkout

The module applies the codes for that store in sequence and keeps the one that reduces the total. Nobody copies, pastes or retries anything. Error handling sits around the automation, so a code that fails does not end up in the shopper’s way

Watching what happens

Usage data shows which coupons are working, which store configurations need attention, and how the module performs under load — including peak shopping periods, when checkout traffic is heaviest. Those signals are what drive fixes to individual store configurations, and they are what the analytics dashboard displays

The automation itself is a separate piece of work with its own write-up. The Coupon Application Engine is a framework-agnostic TypeScript state machine that reads checkout pages through config-driven data retrievers, and Reactive Coupon Integration is the Vue layer that binds an extension UI to it. Coupon Genius is those parts plus the store configurations, the coupon data and the operational tooling around them

It is worth being precise about where machine learning does and does not sit in this. Nothing about applying a coupon is a model: the engine and the store’s configuration do that, deterministically. Where AI was used, it was on the configurations themselves — generating and updating the per-store rules that the engine then executes. Coupon data is a separate problem again, collected through scraping and through the feeds behind it

• The integration module. The production-facing piece, built on the coupon application engine. It drops into a browser extension and applies coupon codes at checkout
• The coupon data. Coupons can be collected by scraping and through affiliate sources, which is what keeps a store’s codes worth trying
• Operational tooling. Tracking and support in one view — the CRM side of running a coupon system. Necessary rather than novel: anyone operating coupons at scale builds or buys something like it
• An analytics dashboard. Built, never deployed. It exists as work, not as a running product, and we would rather list it that way than let it pad the inventory

Coupon Genius was built and integrated as a working system, and the engineering under it is still the basis of how we think about checkout automation. It did not find meaningful commercial demand

There is no public deployment we can send you to. The architecture is real — the engine, the configuration approach, the coupon pipeline and the tooling around them all exist — but nothing is running in front of shoppers under someone’s brand today, and we would rather say that than stage a demo and call it traction

The most direct route is the source code of an existing browser extension. Where that cannot be shared, the module can be delivered as an NPM package with an integration guide, and where there is no extension yet, we can build one with coupon application already integrated

Store coverage is a list you provide, and it can change: integration was scoped to start with the highest-priority stores and add the rest afterwards. A standard integration was scoped at about a week, with up to two weeks where the module needed customizing. The interface is built to your own brand guidelines rather than shipped with ours