app.build is an open-source AI agent for generating production-ready full-stack applications from a single prompt.

We're currently supporting the following application types:

• Full-stack web apps with Bun, React, Vite, Fastify, tRPC and Drizzle;
• Automatic validation with ESLint, TypeScript, and runtime verification;
• Applications tested ahead of generation with smoke tests using Playwright

• Full-stack web apps with Laravel, React, TypeScript, Tailwind CSS, and Inertia.js;
• Modern Laravel 12 with PHP 8+ features and strict typing;
• Built-in authentication with Laravel Breeze providing complete user registration, login, and profile management;
• Production-ready features including validation, testing infrastructure, and code style enforcement;
• AI-powered development that creates complete applications including models, migrations, controllers, and React components from a single prompt;

• Data apps with Python + NiceGUI + SQLModel stack - perfect for dashboards and data visualization;
• Automatic validation using pytest, ruff, pyright, and runtime verification;
• Additional packages management with uv;

All applications support:

• Neon Postgres database provisioned instantly via API
• GitHub repository with complete source code
• CI/CD and deployment via the app.build platform.

New application types are work in progress, stay tuned for updates!

# for tRPC CRUD apps
npx @app.build/cli

# for Laravel apps (Alpha)
npx @app.build/cli --template=laravel

# for Python/NiceGUI apps
npx @app.build/cli --template=python

Local usage and development instructions are available in CONTRIBUTING.md.

Want to run everything locally without API keys? We added experimental support Ollama for local model inference. Set up Ollama, pull your preferred models, and run the agent completely offline. See PROJECT_GUIDELINES.md for detailed setup instructions and recommended models.

We are open for you contributions in better supporting local models. Feel free to send you PRs!

This agent doesn't generate entire applications at once. Instead, it breaks down app creation into small, well-scoped tasks that run in isolated sandboxes:

1. Database schema generation - Creates typed database models
2. API handler logic - Builds validated Fastify routes
3. Frontend components - Generates React UI with proper typing

1. Database migrations & models - Creates Laravel migrations with proper syntax and Eloquent models with PHPDoc annotations
2. Controllers & routes - Builds RESTful controllers with Form Request validation
3. Inertia.js pages - Generates React components with TypeScript interfaces
4. Validation & testing - Runs PHPStan, architecture tests, and feature tests

Each task is validated independently using language-specific tools (ESLint/TypeScript for JS, PHPStan for PHP), test execution, and runtime logs before being accepted.

More details on the architecture can be found in the blog on our design decisions.

This is the agent repository containing the core code generation engine and runtime environment. The CLI and platform code are available in the platform repository.

See CONTRIBUTING.md for development setup and contribution guidelines.

Built to showcase agent-native infrastructure patterns. Fork it, remix it, use it as a reference for your own projects.