Learn how to create and publish apps with AI.
No programming experience needed — this page will get you started.
Just describe the app you want in plain language, and AI will generate the code for you. Upload it to Blue and your web app is published instantly.
Choose the method that works best for you.
Use ChatGPT, Claude, or Gemini to generate code, then upload to Blue.
Claude Code or Codex handle everything from code generation to deploying on Blue.
Everything happens inside Blue. Enter a prompt and publish instantly.
Compare the three methods and choose the one that fits your needs.
| Method | Features | Best for |
|---|---|---|
| Chat AI (ChatGPT, Claude, etc.) | Generate code through conversation, upload to Blue to publish | Beginners · No special tools needed |
| AI Agents (Claude Code, Codex) | Build advanced apps, auto-deploy via API key | Those who want more sophisticated apps |
| AI Build | Everything inside Blue. Enter a prompt, publish instantly | Quick experiments · Simple apps |
Use your favorite chat AI — ChatGPT, Claude, Gemini, or others — to generate app code, then upload it to Blue. No special tools to install; a browser is all you need.
Open your preferred chat AI and describe the app you want to build.
Save the generated code as a file (e.g. index.html). If there are multiple files, put them in a folder and compress it into a ZIP. Even a single file needs to be zipped — just right-click and choose "Compress" in your file manager.
Log in to Blue, open the console (/console), and upload your ZIP file. Your app is published with a URL.
Note: Chat AI cannot deploy directly to Blue, so you upload the code manually. However, this is the most accessible method — no installation required, and you can use whichever AI you already know.
Claude Code (Anthropic) and Codex (OpenAI) are AI tools that can build your app and publish it to Blue for you. Best for more advanced or complex applications.
Launch the Claude Code or Codex desktop app.
Describe the app you want in natural language. The AI will create the files automatically.
Publish the generated code to Blue. There are two ways:
Option A: Upload a ZIP from the console (/console) — same as the Chat AI method.
Option B: Auto-deploy via API key — give the AI agent your Blue deploy key and it will handle deployment automatically.
For API deployment details, see the AI-Ready documentation.
The most casual way to create an app — everything happens inside Blue. Just enter a prompt and publish. Currently best suited for simple apps (single-page HTML, etc.).
Log in to Blue and navigate to the AI Build page. You'll see templates and a prompt input field.
Type a description of the app you want. Works in English or Japanese.
Once the code is generated, click "Deploy". Your app is published with a URL.