Custom Module Builder

Brands no longer need developers to build custom commerce experiences. They just need to describe what they want.

The biggest constraint in ecommerce has never been ideas — it's implementation. Brands know exactly what experience they want to create: a custom bundle builder, an interactive quiz, a comparison tool, a shoppable lookbook. But turning that idea into a live module has always required custom development, agency timelines, and significant investment.

Today, FERMÀT is launching the Custom Module Builder — a set of capabilities that lets brands build, customize, and deploy any type of commerce module without writing code.

How it works

The Custom Module Builder brings together three new capabilities that collectively make FERMÀT an open platform for building any commerce experience:

Custom Module Generation. Ask Pierre — FERMÀT's AI assistant — to build any module from a natural language prompt. Describe what you want, and Pierre generates a fully functional module you can save and reuse across any funnel in your organization. No templates, no constraints — if you can describe it, Pierre can build it.

Edit with AI. Inside the module editor, "Edit with AI" lets you refine any module's styling and layout through conversation. Ask for specific CSS customizations and iterate with Pierre until it's exactly right. Change colors, spacing, typography, animations — all without touching code.

Build Your Own Bundle (BYOB). The first major module type built on this new architecture. BYOB lets brands offer customizable bundles where shoppers pick their own products from a curated pool. Merchandisers configure the rules — eligible products, item limits, discount percentage, category constraints — and the platform handles browsing, slot management, live pricing, and checkout integration.

What this means for brands

Any module, from a prompt. The module library is no longer fixed. Brands can create entirely new commerce experiences by describing them to Pierre.

Iterate without developers. CSS customizations that used to require a front-end developer are now a conversation with AI. Ship changes in minutes, not sprints.

Reuse across funnels. Custom modules are saved to your organization's library and can be deployed across any funnel — build once, use everywhere.

Full checkout integration. Modules like BYOB aren't just visual — they handle pricing logic, inventory, discounts, and cart integration end to end.

Use cases

Custom bundle experiences. A supplement brand lets shoppers build their own vitamin pack — pick 5 from a pool of 20 products, see savings update in real-time, add the whole bundle to cart with discounts auto-applied.

Interactive product selectors. A skincare brand asks Pierre to build a "routine builder" module where shoppers answer 3 questions and see a personalized product set with one-click add to cart.

Branded landing components. A fashion brand needs a seasonal lookbook module with hover-to-shop functionality. They describe it to Pierre, iterate on the styling with Edit with AI, and deploy it across 5 funnels in an afternoon.

Campaign-specific experiences. A food brand creates a holiday gift builder module for Q4, saves it, and redeploys it with updated products for Valentine's Day — no rebuild required.

Availability

Custom Module Generation and Edit with AI are available now for internal testing, with external rollout planned for Q2 2026. BYOB is live today for all brands. Contact your FERMÀT account team for early access to module generation.