Build a Real Full-Stack App with Just Prompts
How coding agents, cloud agent runtimes, and managed hosting combine to ship complete applications.
A code agent writes code. But writing code isn't shipping software.
To go from prompt to production, you need three things working together:
- Code Agent — understands your intent and writes the code
- Agent Runtime — the cloud environment where the agent runs, handling code writing, dev server testing, and deployments
- Hosting — serves your app to users
Each has a job. None can do the others'.
Three Layers, Clear Responsibilities
Code Agent
The agent writes your application. All of it—frontend, backend, database schemas, everything. You describe what you want, and the agent produces working software.
It doesn't just write code and stop. It runs the build, checks for errors, fixes issues, and deploys when everything works. You get a live URL, not a code review.
Agent Runtime
Every task runs in its own isolated sandbox. The agent has a complete development environment—Node.js, Python, git, all the tools it needs. Nothing is shared between workspaces.
The sandbox persists between sessions. Start a task, close your laptop, come back tomorrow—everything is still there. The agent picks up exactly where it left off.
Hosting
When the agent finishes building, it deploys to production infrastructure. Static files go to a global CDN. Server-side code runs on serverless compute. Databases are fully managed.
You don't configure any of this. The agent handles deployment. You get a URL.
Supported Frameworks
Build with the frameworks you already know.
Static Sites
- React — Single-page applications
- Vite — Fast builds for any frontend framework
- Astro — Content-focused sites with partial hydration
- Gatsby — React with static generation
Static sites are the simplest deployment. Build once, serve from CDN. Fast everywhere.
Full-Stack (Server-Side Rendering)
- Next.js — React with SSR, API routes, and the App Router
- Nuxt — Vue with SSR and file-based routing
- Remix — React with nested routing and data loading
- SvelteKit — Svelte with SSR and serverless functions
All four frameworks deploy with full server-side rendering. Pages render on each request, not just at build time.
Databases
If your app needs to persist data, two options:
- SQLite — Full relational database. Tables, joins, complex queries. Just ask for "a database" and you get one.
- Key-Value Store — Simple lookups, flexible schema. Fast reads and writes for data that doesn't need SQL.
Both are fully managed. No connection strings to configure. No backups to schedule. The agent provisions what your app needs.
The Developer Experience
You describe what you want. The agent figures out the rest.
"Build me a blog with comments" → Next.js app with SQLite, deployed and live.
"Create a dashboard for my sales data" → React frontend, API endpoints, database tables, all wired up.
"I need a form that saves submissions" → Static site with serverless function and key-value storage.
The agent picks the right framework, provisions the right infrastructure, and deploys to production. You don't touch a config file. You don't SSH into a server. You don't read AWS documentation.
You describe. The agent builds. Users access your app.
Why This Works
Separation of concerns. Each layer does one thing well:
- Agents are good at writing code, not managing infrastructure
- Runtimes are your dev environment in the cloud—isolated, always available, and authorized to provision the infrastructure your app needs
- Hosting handles scaling and reliability, not business logic
This lets code agents build real applications—full-stack, database-backed, production-ready—without becoming DevOps experts. The complexity is hidden. The capability is not.