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SolGuard — AI-Powered Solana Wallet Protection

SolGuard Next.js Claude AI Vercel

Built for the Solana Frontier Hackathon 2026 by @sansh07

SolGuard uses Claude AI to analyze your Solana transactions, detect threats, and keep your assets safe — in plain English, not technical jargon.

🔗 Live Demo: sol-guard-khaki.vercel.app

The Problem

Every day, Solana users lose millions of dollars to:

  • Wallet drainers disguised as legitimate dApps
  • Rug pulls from unknown smart contracts
  • Forgotten token approvals giving dApps unlimited access to funds
  • Phishing addresses that look legitimate but steal assets

Most users have no way to verify what a transaction will actually do before signing it.

The Solution

SolGuard acts as an AI security layer between users and the Solana blockchain. Before you sign anything, SolGuard tells you exactly what will happen — in plain English.

Why SolGuard?

Feature SolGuard Blowfish Pocket Universe Step Finance
Plain English AI explanations Claude AI Approve/Reject only Basic warnings No
Security Score 0-100 grade No No Basic
Token Approval Manager + Revoke No No Yes
Address Reputation AI powered No Basic No
Pre-Transaction Simulation simulateTransaction + AI Yes Yes No
Open Source Yes No No No
Self-hostable Yes No No No
Works as standalone app Yes Browser extension only Browser extension only Yes

Business Model

Tier Price What you get
Free $0 Devnet only, 10 AI analyses/day, basic security score
Pro $9/month Mainnet, unlimited analyses, real-time alerts, API access
Team $29/month Multiple wallets, team dashboard, priority support

Why this works:

  • 10 million+ active Solana wallets — even 0.1% converting to Pro = $9,000/month recurring revenue
  • B2B angle: sell to Solana dApps (DEXs, NFT marketplaces, lending protocols) who want to embed SolGuard's security scanner into their own UI before users sign transactions
  • Enterprise version for DAOs and DeFi protocols managing large treasuries

Features

🛡️ AI Security Score

Get an overall wallet health score (0-100) powered by Claude AI. Analyzes your transaction history, token holdings, and behavioral patterns to give you a comprehensive security grade.

🔍 Transaction Analyzer

Click "Analyze" on any transaction in your history. Claude AI breaks down exactly what happened, flags suspicious patterns, and rates the risk level from Safe to Critical.

⚡ Pre-Transaction Simulator

Before signing anything, paste a contract address or unsigned transaction. SolGuard runs it through Solana's native simulateTransaction RPC for mathematically accurate results, then Claude AI translates the verified logs into a human-readable report:

  • Exact SOL balance changes (from real simulation)
  • Token movements (in/out)
  • Programs that will be called
  • Any approvals being granted
  • Overall risk verdict

🔐 Token Approval Manager

See every token approval your wallet has granted to dApps. Revoke risky or forgotten approvals with one click — directly from the dashboard.

🕵️ Address Reputation Checker

Paste any Solana wallet or contract address and get an instant reputation score. SolGuard first calls getAccountInfo to deterministically verify if the address is a program or wallet, its balance, owner, and data size — then Claude AI layers contextual risk analysis on top of these verified facts.

📊 Risk Insights & Positive Findings

AI-generated insights about your wallet's security posture — what you're doing right and what needs attention.

🌐 Mainnet/Devnet Toggle

Switch between Solana Devnet and Mainnet directly from the navbar. A safety warning modal appears when switching to Mainnet, reminding users they are viewing real funds. Powered by a shared NetworkContext that dynamically rewires the RPC endpoint across the entire app.

💰 Usage Limiter & Pro Upgrade

Free tier is capped at 10 AI analyses per session. After hitting the limit, users see a beautiful upgrade prompt with Pro plan features ($9/month). Rate limiting is enforced server-side across all 4 API routes, making the monetization story demonstrable to judges.

Tech Stack

Technology Purpose
Next.js 16 Frontend framework
React 18 UI components
Tailwind CSS Styling
Solana Web3.js Blockchain interaction
Solana Wallet Adapter Wallet connection (Phantom)
@solana/spl-token Token account management
Anthropic Claude API AI analysis engine
Vercel Deployment

Architecture

Browser (Client)
    ↓
Landing Page → Connect Wallet → Dashboard
    ↓
Dashboard Components:
  ├── Wallet Overview (web3.js)
  ├── Security Score → /api/score → Claude AI
  ├── Transaction List → /api/analyze → Claude AI
  ├── Pre-Transaction Simulator → /api/simulate → Claude AI
  ├── Token Approval Manager (spl-token)
  └── Address Reputation Checker → /api/reputation → Claude AI

Next.js API Routes (Server-side)
    ↓
Claude API (Anthropic) — API key never exposed to client
    ↓
Solana Devnet RPC

Getting Started

Prerequisites

  • Node.js 18+
  • Phantom Wallet browser extension
  • Anthropic API key

Installation

# Clone the repo
git clone https://github.com/ansh027/SolGuard.git
cd SolGuard

# Install dependencies
npm install --legacy-peer-deps

# Create environment file
cp .env.example .env.local

Environment Variables

Create a .env.local file in the root:

ANTHROPIC_API_KEY=your_anthropic_api_key_here
NEXT_PUBLIC_RPC_URL=https://api.devnet.solana.com

Run Locally

npm run dev

Open http://localhost:3000 in your browser.

Connect Wallet

  1. Install Phantom Wallet browser extension
  2. Switch Phantom to Devnet network
  3. Click "Select Wallet" on the landing page
  4. Approve the connection

How It Works

AI Analysis Flow

User connects wallet
        ↓
SolGuard fetches transaction history from Solana RPC
        ↓
Data sent to Next.js API route (server-side)
        ↓
Claude AI analyzes with specialized security prompts
        ↓
Structured JSON response: { riskLevel, score, summary, flags }
        ↓
Beautiful UI renders results in real-time

Security Design

  • API key never exposed — all Claude calls happen server-side via Next.js API routes
  • No user data stored — all analysis is done in real-time, nothing is saved
  • Devnet by default — safe to test without risking real funds

Project Structure

src/
├── app/
│   ├── components/
│   │   ├── Navbar.js
│   │   ├── Hero.js
│   │   ├── WalletOverview.js
│   │   ├── SecurityScore.js
│   │   ├── TransactionList.js
│   │   ├── SimulatorPanel.js
│   │   ├── TokenApprovalManager.js
│   │   ├── AddressReputation.js
│   │   ├── MainnetWarning.js
│   │   ├── UpgradePrompt.js
│   │   └── RiskBadge.js
│   ├── api/
│   │   ├── analyze/route.js
│   │   ├── score/route.js
│   │   ├── simulate/route.js
│   │   └── reputation/route.js
│   ├── context/
│   │   └── NetworkContext.js
│   ├── dashboard/
│   │   └── page.js
│   ├── demo/
│   │   └── page.js
│   ├── layout.js
│   ├── Providers.js
│   └── page.js
└── lib/
    ├── solana.js
    ├── claude.js
    └── rateLimit.js

Roadmap

  • AI Security Score
  • Transaction Analyzer
  • Pre-Transaction Simulator
  • Token Approval Manager
  • Address Reputation Checker
  • Mainnet/Devnet Toggle
  • Usage Limiter & Pro Upgrade Prompt
  • Real-time wallet monitoring alerts
  • Multi-wallet support
  • Mobile app (Solana Mobile SDK)

Hackathon

Built for the Solana Frontier Hackathon 2026 powered by Colosseum.

Track: AI Agent

Builder: Ansh Singh (@sansh07) — Solo

License

MIT License — see LICENSE for details.

Built with Claude AI on Solana
Protecting wallets, one transaction at a time.

About

SolGuard is an AI-powered Solana wallet assistant that protects users from risky transactions. Before you sign anything, our AI explains what the smart contract actually does in plain English, flags dangerous permissions, and warns you of potential scams making Web3 safe and understandable for everyone, not just developers.

sol-guard-khaki.vercel.app

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