After 25 years of building UIs, here's something I don't think enough of us admit:
We're all building the same apps. Even moreso with AI.
Portals, SaaS dashboards. E-commerce flows. Portfolios. Settings pages. The same dozen archetypes, dressed slightly differently.
And we're all hitting the exact same wall with AI:
By prompt 10, the LLM drifts.
By prompt 20, it's a wrecking ball.
No RAG architecture, hooks, plugins, skills, agents nor clever context window, no "you are a senior engineer" system prompt actually fixes it. The model forgets your design system. It takes liberties . It narrows. It Ships three different button variants in one component.
Soooo….👇👇👇
I built
Decantr.ai.
Decantr.ai is a side project I built because I got tired of watching AI deviate from instruction for the millionth time while building UIs. Instead of trying to fight with the LLMs I tried to design a way to flow with them.
Here's how it works —its a contract— plain and simple:
Idea → Spec → Patterns → Your AI/LLM codes → Decantr Guards catch drift.
A UI “AI” design intelligence layer between your app and the AI. I realized I was fighting against the AI to make it work how I wanted instead of working with the LLM the way it wanted to work.
So.. with Decantr…
1️⃣ You describe what you want to build
2️⃣ Decantr writes a design spec your AI can actually read
3️⃣ It pulls proven blueprints, archetypes, patterns from the registry (or adapts to your existing Brownfield existing app and stack).
4️⃣ Your AI generates the code (Cursor, Claude, Copilot, Angular, React, Svelte — your stack, your call)
5️⃣ Guard rules & processes block drift before it ships
No new IDE. No new chat box. No lock-in.
Decantr doesn't care what you build with.
We care WHAT you build.
It isn't Lovable, or Wix, or Google AI Studio. It doesn't create and ship your app for you, and it's not meant to. It lets you still be an engineer, a designer and build the apps you want to.
Decantr generates the contract that makes whatever tool you already use generate it better — and stop drifting.
If you want to scaffold a new product, Decantr offers a free official and community registry for your next project.
Have a monorepo? Decantr fits right in, and works with all your DevOps pipelines! You can scaffold new sites at scale, or just continue to refine and protect your existing ones.
100% MIT licensed. Free, forever.
GitHub →
github.com/decantr-ai/decant…
Registry (official community) →
registry.decantr.ai
Opening to contributors soon — drop a comment or DM if interested.
All feedback negative or positive welcome. If you're interested in starting a project on Decantr feel free to reach out to me for more info, or visit the git repo and try it yourself.
Thank you all for reading and Happy coding!