chain-ops-mgo

chain-ops-mgo

Multi-chain Gas Optimizer — Compare real-time gas prices across 9 EVM chains and get the cheapest-chain recommendation. Pay-per-call via x402 on Base. No API key, no signup.

When to use: call it before any EVM transaction (bridge, deploy, swap) to route to the lowest-fee chain — e.g. "Use Base — saves 99.8% vs Ethereum". Built for AI agents: one USDC microtransaction per call, ERC-8004 identity handled automatically.

Install

Free endpoints only:

npm install chain-ops-mgo

Auto-payment (recommended for paid endpoints):

npm install chain-ops-mgo @chain-ops/agent-sdk viem

Quick Start

Free — no payment

const { getCheapestChain } = require('chain-ops-mgo');

const result = await getCheapestChain();
console.log(result);
// {
//   chain: 'Base',
//   gasPriceGwei: '0.0100',
//   dexSwapCostUsdc: 0.001,
//   savingsVs: 'Ethereum',
//   savingsPercent: '99.8%'
// }

Paid — auto-payment via SDK (recommended)

const { getGasBasicWithPayment } = require('chain-ops-mgo');

const data = await getGasBasicWithPayment({
  account: process.env.PRIVATE_KEY, // 0x...
  network: 'base',
});

console.log(data.recommendation.action);
// "Use Base — saves 99.8% vs Ethereum"

The SDK handles ERC-8004 identity, EIP-712 signing, and the x402 402-handshake automatically. One USDC microtransaction per call ($0.001 basic, $0.002 premium).

Endpoints

Function	Price	Chains	Notes
getGasDemo()	Free	4	Raw gas prices, rate limited 10/hr
getCheapestChain()	Free	4	Simple cheapest chain helper
getGasBasicWithPayment({ account })	$0.001 USDC	4	Auto-pay via SDK + recommendation
getGasPremiumWithPayment({ account })	$0.002 USDC	9	Auto-pay via SDK + 9 chains incl. BNB, Polygon, Avalanche, zkSync, Hyperliquid
getGasBasic({ paymentHeader })	$0.001 USDC	4	Manual mode — bring your own x402 header
getGasPremium({ paymentHeader })	$0.002 USDC	9	Manual mode — bring your own x402 header

Auto-pay options

await getGasPremiumWithPayment({
  account: '0x...',         // private key OR a viem Account object
  network: 'base',          // currently only 'base'
  maxPrice: 5_000n,         // optional cap in micro-USDC ($0.005)
});

If @chain-ops/agent-sdk is not installed, the auto-pay functions throw a clear error pointing to the install command. Free functions work without it.

Manual mode (advanced)

If you build your own x402 client, you can supply a pre-built header:

const { getGasBasic } = require('chain-ops-mgo');

const data = await getGasBasic({
  paymentHeader: { 'X-PAYMENT': '<your encoded payment>' },
});

Without a payment header, paid functions throw Error: Payment required with err.status === 402 and err.paymentInfo for inspection.

Payment

Uses x402 protocol on Base (eip155:8453) with USDC. No API key, no subscription, no account required.

Links

• API: https://api.mgo.chain-ops.xyz
• Dashboard: https://mgo.chain-ops.xyz
• SDK: @chain-ops/agent-sdk — the underlying x402 + ERC-8004 client
• ClawHub: https://clawhub.ai/dlrjsdl200-byte/skills/chain-ops-mgo
• Homepage: https://chain-ops.xyz

License

MIT