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How to Vibe-Code a Full-Stack Web App Using a Replit AI Agent

Take a detailed product blueprint and use the Replit AI agent to build, iterate, and deploy a complex, database-driven web application. This workflow demonstrates how to guide the AI through conversational prompts to create a functional app without deep coding knowledge.

From How I AI

How I AI: How a 91-Year-Old Vibe-Coded a Complex Church App with Claude and Replit

with Claire Vo

How to Vibe-Code a Full-Stack Web App Using a Replit AI Agent

Tools Used

Claude

Anthropic AI assistant

Replit

AI-powered coding platform

Step-by-Step Guide

1

Initiate the Build with Your Blueprint

Copy the entire development blueprint (user stories, requirements, architecture) that you created with a tool like Claude. Paste this comprehensive brief directly into the Replit agent's chat to kick off the project.

2

Observe the Initial Code Generation

Watch as the Replit agent interprets your blueprint and begins to build the application. It will automatically generate the file structure, set up the database schema, and write the initial frontend and backend code.

3

Prompt for Complex Features and Integrations

Use natural language to ask the agent to build specific, advanced features. For instance, request a secure admin dashboard with different permission levels, automated reporting that exports to Excel, or integrations with third-party APIs like OpenAI for a VIN lookup feature or SendGrid for sending emails.

4

Iterate by Adding New Functionality

Continuously enhance your application by describing new features to the agent. Use simple, direct prompts to add new capabilities, such as creating a new database table and user interface for managing volunteers.

Prompt:
I want to add a function that will populate a volunteer list when a local administrator fills an input page.
5

Guide and Correct the AI Agent

Actively manage the AI's coding process. Monitor the agent's work and be prepared to intervene with commands like 'Stop' or 'Wait' if it starts generating incorrect or irrelevant code, guiding it back onto the right path.

Pro Tip: This human-in-the-loop feedback is the core of 'vibe-coding'. Your role is to be the director, providing high-level instructions and making course corrections.
6

Test Features and Provide Feedback

As the agent builds each feature, thoroughly test its functionality. If something doesn't work as expected, describe the error or the desired behavior back to the agent so it can make the necessary corrections.

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