2026-07-13 23:07 UTCIn-site rewrite3 min readUpdated: 2026-07-13 23:08 UTC

Cdbx.ai – AI-powered Browser IDE to Describe, Build, and Publish Apps

Cdbx.ai is an AI-powered browser IDE that lets you describe apps in plain English and have them built instantly. It features a full Monaco editor, AI pair programmer, MCP connectors, AI agents, and supports 30+ languages.

SourceHacker News AIAuthor: chbutler

What will you build today?

You describe it. cdbx builds it.

Already have an account?

Built for everyone

Whether you code or not, cdbx works for you.

For developers

A real IDE. In your browser.

Everything you'd expect from a desktop IDE — without the setup. Open a tab and start building.

Full Monaco editor — same engine as VS Code

Real terminal with streaming output

AI pair programmer that reads and writes your files

Instant preview. No npm install.

For makers & creators

No experience needed.

You have the idea. cdbx has the AI. Just describe what you want and watch it come to life.

Describe what you want in plain English

Watch your app get built in real-time

One click to publish and share

No setup, no installs, no learning curve

MCP Connectors

Your tools, in context.

Connect any external service to your AI context — Notion, GitHub, Slack, Google Drive, and more. The AI queries them on demand. No copy-pasting, no tab-switching.

Connect Notion, GitHub, Slack, Google Drive, and more

AI queries connected services on demand — nothing preloaded

Any MCP-compatible server works — self-hosted or third-party

Running locally? Expose it with ngrok and connect instantly

Connect Claude Desktop or Cursor to your experiments via the cdbx MCP server

AI Agents

Agents in every step.

cdbx doesn't just have an AI chat window — agents are woven into every part of the workflow, from generating your app to fixing errors to refining your UI.

Planning Agent — plan PRDs, architecture, and research with full connector context

Vibe Coding generates complete apps from a plain description

Self-Healing detects and fixes build errors without interrupting you

Visual Loop iterates your UI against the live preview

Help Assistant answers questions about cdbx inline as you work

Planning Agent

Think before you build.

A strategy partner with full access to your connected services. Write PRDs, design system architecture, plan a research report, or build a slide deck — with an AI that has actually read your Notion pages, Linear backlog, and GitHub repos.

6 plan types

General, Web App, Architecture, Deep Research, Slides, and API Spec — each with a purpose-built AI and live preview.

Connected context

The Planning Agent queries your Notion, GitHub, Google Drive, Linear, Figma, and Slack on demand.

AI-generated docs

The agent writes directly to your plan's file tree. /PRD, /ADR, /RFC, and more as slash commands.

"Start Building" handoff

When your plan is done, one click opens a new experiment pre-loaded with your plan as context.

See the full Think → Build → Ship workflow

General Plan

Strategy, roadmaps, and docs

Web App

Plan and build a web app with AI

Architecture

System design, C4 diagrams, and ADRs

Deep Research

Synthesise sources into a report

Slides

Build a slide deck with live preview

API Spec

Design REST APIs with OpenAPI 3.0

Simple by design

From idea to live app in minutes.

Describe

Tell cdbx what you want to build in plain English, or pick a template.

Build

AI generates all your files instantly. Your app runs in the browser immediately.

Ship

One click to publish. Share your live app with anyone in the world.

Every stack

Your language. Your framework.

Frontend or backend, scripted or compiled — cdbx runs it all in one place.

Frontend

React

Vue

Svelte

Angular

Preact

JavaScript

TypeScript

Backend

Python

Node.js

Java

Ruby

Bun

Rust

Kotlin

Runner API

Execute code from anywhere.

Send code, get output. No infrastructure, no Docker, no cold starts. A single API call runs your code in a secure sandbox and returns stdout, stderr, and exit code in milliseconds.

curl

curl -X POST https://api.cdbx.ai/v1/runner/execute \ -H "Authorization: Bearer cdbx_your_key" \ -H "Content-Type: application/json" \ -d '{ "language": "python", "files": { "main.py": "print('Hello!')" }, "entrypoint": "main.py" }' | jq

{

"stdout": "Hello!\n",

"exitCode": 0,

"durationMs": 94

}

30 languages, one endpoint

Python, Go, Node, Rust, Java, C, C++, Swift, Haskell, Elixir, Zig, and 19 more — all running in isolated sandboxes.

Secure by default

Network isolation, memory caps, PID limits, seccomp profiles. Each execution runs in a fresh container.

Built for agents

Your AI agent can run code it generates. The cdbx MCP server exposes run_code as a tool — Claude can call it directly.

Simple billing

Free tier includes 100 executions/month. Pro includes 2,000. Buy top-up packs when you need more — they never expire.

30 languages

PythonGoNode.jsTypeScriptJavaKotlinRustC#RubyCC++PHPSwiftScalaHaskellElixirClojureBashPerlLuaRDNimZigOCamlF#JuliaDartCrystalGroovy

Read the API docs

Pricing

Start free. Scale when you're ready.

Free to start. No credit card required.

Free

$0/ month

Free forever. No credit card needed.

Public & private experiments

All frameworks & languages

AI assistant (Haiku + GPT-4o-mini)

10 AI credits / month

Export as ZIP or push to GitHub

Publish to a live URL