Cloudflare VibeSDK: Open Source AI Webapp Generator

Dec 7, 2025

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Cloudflare released VibeSDK, an open-source full-stack AI webapp generator. Describe what you want in natural language, and it builds and deploys a working React app.

What It Does

VibeSDK takes the “vibe coding” concept and makes it deployable infrastructure. You chat with an AI, describe your app, watch it build in phases, preview it in a sandbox, iterate through feedback, and deploy with one click.

The live demo is at build.cloudflare.dev.

How It Works

Describe your app in plain language
AI agents analyze requirements and create a blueprint
Code generates in phases: planning → foundation → core → styling → integration → optimization
Preview in isolated Cloudflare Containers
Iterate with chat-based feedback
Deploy to Workers for Platforms

Generated apps use React + TypeScript + Tailwind.

Tech Stack

Built entirely on Cloudflare’s platform:

Frontend: React + Vite
Backend: Workers + Durable Objects for AI agents
Database: D1 (SQLite) with Drizzle ORM
AI: Multiple LLMs via AI Gateway (Gemini by default)
Sandboxes: Cloudflare Containers for live preview
Deployment: Workers for Platforms
Storage: R2 + KV

Deploy Your Own

One-click deploy available, or clone and run locally:

git clone https://github.com/cloudflare/vibesdk.git
cd vibesdk
npm install
npm run setup
bun run dev

Requirements:

Workers Paid Plan
Workers for Platforms subscription
Advanced Certificate Manager (wildcard subdomains)
Google Gemini API key
Custom domain with wildcard CNAME

Use Cases

Companies building AI platforms: Let users create apps through natural language.

Internal tools: Non-technical staff (marketing, sales, ops) build tools without engineering.

SaaS extensibility: Customers describe custom integrations and workflows.

Example Prompts

The README suggests prompts like:

“A todo list with drag and drop”
“An expense tracker with charts”
“A pomodoro timer with task management”
“A markdown editor with live preview”
“A QR code generator and scanner”

Why It Matters

This is Cloudflare’s answer to the vibe coding trend. Instead of building another AI coding assistant, they built the infrastructure for deploying AI-generated apps at scale.

The interesting part: it’s open source (MIT). You can run your own instance, customize the AI prompts, integrate different LLM providers, and white-label it for your platform.

3.4k stars, 901 forks, actively maintained.