The AI Design Engineer
Nucleate ingests your codebase's styles and components, so every prototype is on-brand. Explore variants quickly, then export real code.
Instant variants using your components.
Explore instant variants. These aren't mockups — they are real components from your repo.
Midnight City
M83 • Hurry Up, We're Dreaming
MIDNIGHT
CITY
M83 / Hurry Up, We're Dreaming
Midnight City
M83
From prototype → PR
Nucleate isn't a playground. It's a delivery tool that lives in your engineering workflow.
Export Code
Copy/paste specific components or export entire screens as clean, modular React files.
Open a PR
Nucleate creates a PR against your repo following your naming conventions and file structure.
Reviewable Diffs
No "black box" code. Small, readable diffs that match your coding style and are easy to iterate on.
Ship to your repo in seconds
Design and engineering work in the same source of truth: Git.
UI iteration is broken when design and code are split.
Bridge the gap between vision and production.
Design Drift
Figma diverges from code. Nucleate uses your repo as the single source of truth.
Manual Rebuilds
Engineers rebuild UI from scratch using screenshots. Nucleate outputs production-ready PRs.
Stifled Exploration
Handoff is too slow to try more than 1 design. Nucleate generates 10 system-safe variants in minutes.
Handoff Friction
The 'design-to-dev' loop takes weeks. Nucleate unifies exploration and implementation in one cycle.
How It Works
No manual setup. No component tagging. No config hell.
Connect Repo
Connect GitHub. Nucleate auto-detects your components and styling primitives.
Prototype & Explore
Describe a flow. Generate variants and screens using your real system components instantly.
Ship Real Code
Export production-ready web or mobile code. Or, have Nucleate open a PR directly against your repo.
Why Nucleate?
Prototyping that lives in the codebase.
| Feature | Figma | AI Builders | Nucleate |
|---|---|---|---|
| Uses your components | No | No | Yes (Automatic) |
| Enforces design tokens | Manual | No | Strictly Enforced |
| Works on existing codebase | No | No | Yes |
| PR to repo | No | No | Direct GitHub PR |
Simple pricing
Start for free, scale as you grow.
Free
For trying out Nucleate
Plus
For individuals
Teams
For growing teams
Enterprise
For large organizations
Bring your own Claude Code
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Questions?
How does repo sync work?
You never have to do manual syncing. Nucleate's agents will always stay up to date on your repo's latest state.
Does it use our existing components?
Yes. Unlike generic AI tools, Nucleate prioritizes using your existing library. If you have a 'Button' or 'Card' component, Nucleate will use them instead of generating new ones.
How does the PR workflow work?
After you're happy with a prototype, you can click 'Open PR'. Nucleate will branch from your main, commit the new screens and components, and create a Pull Request for your review.
Is our code sent externally?
We only send the necessary context (component signatures and tokens) to the model to generate the UI. Your source code is never used to train models.