Aegis402 Shield Protocol (Hackathon/Testnet)

Blockchain security API for AI agents. Testnet version - pay with Base Sepolia USDC.

⚠️ This is the hackathon/testnet deployment. For production, use aegis-security.

Skill Files

| File | URL |

|------|-----|

| SKILL.md (this file) | https://hackathon.aegis402.xyz/skill.md |

| package.json (metadata) | https://hackathon.aegis402.xyz/skill.json |

Base URL: https://hackathon.aegis402.xyz/v1

Quick Start

npm install @x402/fetch @x402/evm

import { x402Client, wrapFetchWithPayment } from '@x402/fetch';
import { ExactEvmScheme } from '@x402/evm/exact/client';

const client = new x402Client()
  .register('eip155:*', new ExactEvmScheme(yourEvmWallet));

const fetch402 = wrapFetchWithPayment(fetch, client);

// Payments on Base Sepolia (testnet USDC)
const res = await fetch402('https://hackathon.aegis402.xyz/v1/check-token/0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48?chain_id=1');
const data = await res.json();

Requirements: Testnet USDC on Base Sepolia (chain ID 84532)

Get testnet USDC: Base Sepolia Faucet

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Pricing (Testnet USDC)

| Endpoint | Price | Use Case |

|----------|-------|----------|

| POST /simulate-tx | $0.05 | Transaction simulation, DeFi safety |

| GET /check-token/:address | $0.01 | Token honeypot detection |

| GET /check-address/:address | $0.005 | Address reputation check |

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Endpoints

Check Token ($0.01)

Scan any token for honeypots, scams, and risks.

curl "https://hackathon.aegis402.xyz/v1/check-token/0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48?chain_id=1"

Response:

{
  "address": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
  "isHoneypot": false,
  "trustScore": 95,
  "risks": [],
  "_meta": { "requestId": "uuid", "duration": 320 }
}

Check Address ($0.005)

Verify if address is flagged for phishing or poisoning.

curl "https://hackathon.aegis402.xyz/v1/check-address/0x742d35Cc6634C0532925a3b844Bc454e4438f44e"

Response:

{
  "address": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
  "isPoisoned": false,
  "reputation": "NEUTRAL",
  "tags": ["wallet", "established"],
  "_meta": { "requestId": "uuid", "duration": 180 }
}

Simulate Transaction ($0.05)

Predict balance changes and detect threats before signing.

curl -X POST "https://hackathon.aegis402.xyz/v1/simulate-tx" \
  -H "Content-Type: application/json" \
  -d '{
    "from": "0xYourWallet...",
    "to": "0xContract...",
    "value": "1000000000000000000",
    "data": "0x...",
    "chain_id": 8453
  }'

Response:

{
  "isSafe": true,
  "riskLevel": "LOW",
  "simulation": {
    "balanceChanges": [
      { "asset": "USDC", "amount": "-100.00", "address": "0x..." }
    ]
  },
  "warnings": [],
  "_meta": { "requestId": "uuid", "duration": 450 }
}

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x402 Payment Flow (Testnet)

1. Agent calls any paid endpoint
2. Receives 402 Payment Required with Base Sepolia payment instructions
3. Pays testnet USDC on Base Sepolia (chain ID: 84532)
4. Retries request with payment proof header
5. Gets security scan result

Network: Base Sepolia (eip155:84532)

Currency: Testnet USDC

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Use Cases for AI Agents

Before Swapping Tokens

const tokenCheck = await fetch402(`https://hackathon.aegis402.xyz/v1/check-token/${tokenAddress}?chain_id=8453`);
const { isHoneypot, trustScore } = await tokenCheck.json();

if (isHoneypot || trustScore < 50) {
  console.log('⚠️ Risky token detected!');
}

Before Signing Transactions

const simulation = await fetch402('https://hackathon.aegis402.xyz/v1/simulate-tx', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({ from, to, value, data, chain_id: 8453 })
});

const { isSafe, riskLevel, warnings } = await simulation.json();

if (!isSafe || riskLevel === 'CRITICAL') {
  console.log('🚨 Dangerous transaction!', warnings);
}

---

Risk Levels

| Level | Meaning |

|-------|---------|

| SAFE | No issues detected |

| LOW | Minor concerns, generally safe |

| MEDIUM | Some risks, proceed with caution |

| HIGH | Significant risks detected |

| CRITICAL | Do not proceed |

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Supported Chains (for scanning)

| Chain | ID | check-token | check-address | simulate-tx |

|-------|-----|-------------|---------------|-------------|

| Ethereum | 1 | ✅ | ✅ | ✅ |

| Base | 8453 | ✅ | ✅ | ✅ |

| Polygon | 137 | ✅ | ✅ | ✅ |

| Arbitrum | 42161 | ✅ | ✅ | ✅ |

| Optimism | 10 | ✅ | ✅ | ✅ |

| BSC | 56 | ✅ | ✅ | ✅ |

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Health Check (Free)

curl https://hackathon.aegis402.xyz/health

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Links

• Hackathon API: https://hackathon.aegis402.xyz
• Production API: https://aegis402.xyz
• GitHub: https://github.com/SwiftAdviser/aegis-402-shield-protocol
• x402 Protocol: https://docs.x402.org

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🛡️ Built for the Agentic Economy. Powered by x402 Protocol.