AI-Powered Full-Stack Development with Claude – FullStack Agent

FullStack Agent is an open-source, AI-powered platform that lets you create, develop, and deploy full-stack web apps using natural language.

The AI agent integrates a modern technology stack, including Next.js for the JS framework, shadcn/ui for components, and a PostgreSQL database managed by KubeBlocks. The core functionality relies on Claude to interpret natural language prompts and then generate the necessary code.

FullStack Agent is suitable for building complete web applications, from the user interface to the backend logic and database management.

It handles infrastructure tasks like database provisioning and container orchestration, so you can focus on application features.

The AI agent also includes a web-based terminal for direct access to the development environment and integrates with GitHub for version control.

Features

• AI-Powered Development: Uses Claude Code to construct applications from natural language prompts.
• Isolated Sandboxes: Every project operates within its own container environment managed by Kubernetes for security.
• Automatic Database Provisioning: Creates PostgreSQL databases as needed for your applications using KubeBlocks.
• GitHub Integration: Manages code repositories and version control through a connection with GitHub.
• Real-time Progress Tracking: Gives visual updates during the creation and deployment of sandboxes.

Use Cases

• Rapid Prototyping: Quickly build and test new application ideas by describing the desired features in text.
• Internal Tool Development: Create custom internal dashboards and tools without extensive manual setup.
• Learning Full-Stack Development: Experiment with a complete, managed development environment to understand how different technologies interact.
• Automated Project Scaffolding: Generate the boilerplate for new Next.js projects with a pre-configured database and deployment setup.

How to Implement It

1. Clone the project from GitHub and navigate into the directory.

 git clone https://github.com/FullstackAgent/FullstackAgent.git 
 cd FullstackAgent/fullstack-agent

2. Install the required npm packages.

npm install

3. Create a .env.local file in the fullstack-agent directory. This file will store your database connection string, GitHub credentials, and NextAuth settings.

# Database
DATABASE_URL="postgresql://user:password@localhost:5432/fullstackagent"

# GitHub OAuth
GITHUB_CLIENT_ID="your-github-client-id"
GITHUB_CLIENT_SECRET="your-github-client-secret"

# NextAuth
NEXTAUTH_URL="http://localhost:3000"
NEXTAUTH_SECRET="your-nextauth-secret"

# Kubernetes
KUBECONFIG_PATH="./.secret/kubeconfig"

4. Place your Kubernetes configuration file at .secret/kubeconfig.

5. Create another file named .env inside the .secret directory to store your Anthropic API key.

ANTHROPIC_API_KEY="your-anthropic-api-key"

6. Run the Prisma commands to generate the client and synchronize your database schema.

npx prisma generate npx prisma db push

7. Run the Development Server to start the application. You can now access the application at http://localhost:3000.

bash npm run dev

8. To create a sandbox for your project, send an API request to the sandbox endpoint with any environment variables your application requires. The platform will respond with URLs for accessing the web terminal and your running application.

POST /api/sandbox/[projectId]
Content-Type: application/json
{
  "envVars": {
    "DATABASE_HOST": "postgres-service",
    "NODE_ENV": "development"
  }
}

Monitor the status of your sandbox by making a GET request to the same endpoint. This returns whether the sandbox is still initializing, running, or has encountered an error.

GET /api/sandbox/[projectId]

When you finish working with a project, delete the sandbox to free up resources and stop consuming cloud infrastructure costs.

DELETE /api/sandbox/[projectId]

Related Resources

• Next.js: The official documentation for the React framework used to build the application’s user interface.
• Kubernetes: Documentation for the container orchestration system that manages the application’s infrastructure.
• Claude Code CLI: Information on the command-line tool that powers the AI development features.
• KubeBlocks: Learn more about the tool used for provisioning and managing PostgreSQL databases on Kubernetes.

FAQs

Q: What are the main technologies required to run this platform?
A: You need Node.js, a PostgreSQL database, a Kubernetes cluster with KubeBlocks installed, and GitHub OAuth credentials.

FAQs

Q: Do I need to understand Kubernetes to use FullStack Agent?
A: No. The platform abstracts away Kubernetes complexity behind a simple interface. You describe what you want to build, and the system handles all Kubernetes operations automatically.

Q: What happens to my data if a sandbox crashes?
A: Your database persists independently from your application container. If a sandbox crashes, you can recreate it and reconnect to the same database. Your code and data remain accessible through GitHub and the database respectively.

Q: How much do sandboxes cost to run?
A: Costs depend entirely on your Kubernetes cluster configuration and hosting provider. The platform supports standard resource limits and can be configured to run on free Kubernetes tiers.