x402 Cross-Chain Data Engine ⚡

A high-performance, stateless Web3 security and liquidity micro-API running natively on Cloudflare Workers edge. Built on the x402 open standard (co-developed by Coinbase CDP and Cloudflare), this engine provides automated security checks, liquidation sentinels, and dynamic DEX quoter data to autonomous AI agents, MEV searchers, and algorithmic trading bots with 0% merchant gas deduction and instant off-chain EIP-3009 cryptographic verification.

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🌐 Live Production Endpoints

• Live Base URL: https://x402-data-engine.mablockcn.workers.dev
• Machine Discovery Manifest: https://x402-data-engine.mablockcn.workers.dev/.well-known/x402
• Health Check: https://x402-data-engine.mablockcn.workers.dev/health
• Pricing & Quotes: https://x402-data-engine.mablockcn.workers.dev/v1/quote

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⚡ Available Micro-Services & Pricing

Endpoint	Method	Description	Price (USDC)	Settling Networks
/v1/simulate-honeypot	GET	Simulates token transfers and detects scam/tax bytecode	$0.02	Base, Polygon
/v1/aave-liquidations	GET	Real-time health factor & debt audit for Aave v3 positions	$0.05	Base, Polygon
/v1/decode-abi	POST	Stateless zero-dependency calldata & event decoder	$0.01	Base, Polygon
/v1/dex-slippage	GET	Multi-pool slippage, tick liquidity & impact analysis	$0.01	Base, Polygon

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💳 Settlement Architecture (Gasless EIP-3009)

The engine enforces dual-network settlement via Circle Native USDC on Base (eip155:8453) and Polygon (eip155:137):

• Target Payout Wallet: 0x267e548ab3444aa0a671914ac7c644306a6b90b4
• Base Native USDC: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
• Polygon Native USDC: 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359
• Facilitator Relayers: https://x402.org/facilitator & https://api.cdp.coinbase.com/platform/v1/x402/facilitator

Buyers sign an off-chain transferWithAuthorization message (EIP-3009). The payment facilitator broadcasts the transaction and pays 100% of the blockchain gas fee.

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🤖 AgentKit & Autonomous Agent Integration

TypeScript / JavaScript

import { createWalletClient, http } from "viem";
import { privateKeyToAccount } from "viem/accounts";
import { base } from "viem/chains";

const account = privateKeyToAccount(process.env.AGENT_PRIVATE_KEY as `0x${string}`);
const client = createWalletClient({ account, chain: base, transport: http() });

// Query manifest for prices
const manifest = await fetch("https://x402-data-engine.mablockcn.workers.dev/.well-known/x402").then(r => r.json());

Python

import requests

# 1. Fetch live quotes
quotes = requests.get("https://x402-data-engine.mablockcn.workers.dev/v1/quote").json()
print("Active service prices:", quotes["pricing"])

# 2. Query endpoint (receives 402 challenge with exact payment requirements)
resp = requests.get("https://x402-data-engine.mablockcn.workers.dev/v1/simulate-honeypot?token=0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359")
print("Status:", resp.status_code) # 402 Payment Required
print("Requirements:", resp.json()["networks"])

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📜 License

MIT License. Maintained by MaaBlock.