AI Builds a FULL-STACK Web3 dApp From Scratch?! (Aider + Gemini 2.5 Pro Live Test)

🤯 Is Building Full-Stack Web3 Apps Too Complex? Can AI Actually Help? 🤯

Ever feel lost in the maze of Solidity, Foundry, Next.js, wallet integration, and gas fees? You've heard the AI hype, but can tools really build a working dApp from the ground up?

Forget the hype videos. This is the REAL DEAL.

In this video, I put AI coding assistant *Aider*, powered by *Google's Gemini 2.5 Pro*, to the ultimate test. We start with NOTHING – an empty directory – and prompt our way through building a complete *ERC20 Token Sale dApp*:

Smart Contract: Develop an `AiderToken` (AID) with OpenZeppelin v5 & Foundry.
Token Sale Logic: Implement a `buyTokens` function (0.1 ETH per AID).
AI Debugging: Watch us catch and fix REAL bugs in the AI-generated Solidity (because AI isn't perfect!).
Frontend: Build a slick UI with Next.js 15, Tailwind CSS & Shadcn UI.
Web3 Integration: Connect wallets seamlessly using RainbowKit & Wagmi.
Local Deployment: Deploy to Anvil and interact with the live dApp!

This isn't just about the final code – it's about witnessing the raw, unfiltered process of AI-assisted development. See the prompts, the AI's responses, the inevitable errors, and the crucial debugging steps.

🔥 What You'll Witness & Learn: 🔥

Setting up Aider + Gemini 2.5 Pro in Docker.
Structuring a full-stack Next.js + Foundry project.
Prompting AI for complex Solidity & Next.js tasks.
The REALITY of debugging AI-generated code (critical!).
Using Foundry for building, testing & local deployment (Anvil).
Integrating RainbowKit for smooth wallet connections.
The practical workflow, benefits, AND pitfalls of AI in Web3 dev.

00:00:00 - Intro: The Web3 Complexity Problem & The AI Promise
00:00:04 - Meet Aider & Gemini 2.5 Pro
00:00:28 - Project Goal: Full-Stack Token Sale dApp
00:00:50 - Explaining Aider Docker Setup
00:01:18 - Introducing Foundry for Smart Contracts
00:01:45 - Introducing Frontend Stack (Next.js, RainbowKit, Shadcn, Tailwind)
00:02:26 - Project Structure Explanation (Contracts Subfolder)
00:03:12 - Setup: Git Init & Forge Init
00:04:47 - Setup: Running Aider in Docker & Config
00:08:05 - Adding Initial Files to Aider Context
00:09:36 - Prompting the Smart Contract (ERC20, Ownable, Sale)
00:13:39 - Handling Dependencies (Manual OpenZeppelin Install)
00:14:46 - First Build Attempt & Analyzing Generated Code
00:18:02 - DEBUGGING AI #1: Identifying First Compiler Error (Foundry DevOps Tools)
00:19:30 - Planning the Refinement Prompt (Fix DevOps, Add Receive, Change Buy Logic)
00:21:38 - Second Build Attempt & New Error (Undeclared Identifier)
00:26:39 - Feeding Error Back to Aider (External vs Public Visibility)
00:29:26 - Identifying Test Issues (Sender vs Prank)
00:31:38 - Running Tests & Identifying Failures
00:32:13 - Feeding Test Failures to Aider
00:33:08 - DEBUGGING AI #2: Identifying the Critical Decimal Bug!
00:33:51 - Asking Aider to Fix the Decimal Bug
00:34:42 - Aider Successfully Fixes the Decimal Bug
00:35:58 - Handling Final Test Failures (Gas/Refund Assertions)
00:37:03 - Smart Contract Complete!
00:37:09 - Frontend Setup: Next.js 15, Tailwind, Shadcn UI Init
00:40:18 - Installing Shadcn UI
00:40:42 - Installing RainbowKit, Wagmi, Viem
00:44:02 - Adding Frontend Files to Aider Context
00:45:33 - Prompting the Main Token Sale Page UI & Provider Setup
00:50:54 - Reviewing Generated Frontend Code
00:51:08 - Adding Required Shadcn UI Components (Alert)
00:52:03 - Running the Frontend Dev Server & First Look
00:52:51 - Deployment: Starting Anvil & Preparing Forge Script
00:53:49 - Connecting the Frontend (Checking Default Contract Address)
00:54:24 - MetaMask Setup for Anvil
00:54:51 - LIVE DEMO: Interacting with the AI-Built dApp!
00:55:01 - Final Thoughts: AI as a Web3 Co-Pilot (Pros & Cons)
00:56:27 - Conclusion & Outro

Is AI the future of Web3 development, or just a fancy autocomplete? Watch now and decide for yourself!

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🔗 Links & Resources: 🔗

Full Tutorial on Website: ethereum-blockchain-developer.com/advanced-mini-co…
GitHub Repository: github.com/tomw1808/aider-gemini-solidity-nextjs
Aider: aider.chat/
Foundry: book.getfoundry.sh/
Google AI (Gemini): aistudio.google.com/
OpenZeppelin Contracts: docs.openzeppelin.com/contracts/5.x/
Next.js: nextjs.org/
RainbowKit: www.rainbowkit.com/
Wagmi: wagmi.sh/
Viem: viem.sh/
Shadcn UI: ui.shadcn.com/
Tailwind CSS: tailwindcss.com/

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