Server data from the Official MCP Registry
Compare live gas across up to 9 EVM chains and get the cheapest one. x402 pay-per-call on Base.
About
Compare live gas across up to 9 EVM chains and get the cheapest one. x402 pay-per-call on Base.
Remote endpoints: streamable-http: https://api.mgo.chain-ops.xyz/mcp
Security Report
Valid MCP server (1 strong, 1 medium validity signals). 1 known CVE in dependencies Imported from the Official MCP Registry. 1 finding(s) downgraded by scanner intelligence.
4 tools verified · Open access · 2 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Found in Source Code
Found by scanning the linked source code. This listing connects to a hosted endpoint, so none of this runs on your machine: it describes what the server software does where it is hosted.
How to Connect
Remote Plugin
No local installation needed. Your AI client connects to the remote endpoint directly.
Add this to your MCP configuration to connect:
{
"mcpServers": {
"xyz-chain-ops-mgo": {
"url": "https://api.mgo.chain-ops.xyz/mcp"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
MGO — Multi-chain Gas Optimizer
An x402-native API that compares real-time gas prices across up to 9 EVM chains and recommends the cheapest one. Built for trading agents, DeFi bots, and any AI agent that needs to optimize transaction costs.
Quick Start
# 1. Install dependencies
npm install
# 2. Set environment variables
cp .env.example .env
# Set WALLET_ADDRESS (USDC receiving wallet on Base) and CDP_API_KEY_ID/SECRET (facilitator auth)
# 3. Run locally (same entry point as production)
npm start
# 4. Test
# Open in browser: http://localhost:3000/gas/demo
Tiers
| Feature | Demo (Free) | Basic ($0.001) | Premium ($0.002) |
|---|---|---|---|
| Chains | 4 | 4 | 9 |
| Gas prices | Yes | Yes | Yes |
| Cheapest chain recommendation | No | Yes | Yes |
| Savings % calculation | No | Yes | Yes |
| Cost savings estimate | No | Yes | Yes |
| BNB, Polygon, Avalanche, zkSync, Hyperliquid | No | No | Yes |
| Rate limit | 10/hr, 100/day | Unlimited | Unlimited |
Endpoints
| Endpoint | Payment | Description |
|---|---|---|
GET /gas/demo | Free | Raw gas prices only (10/hr rate limit) |
GET /gas/basic | $0.001 USDC (x402) | 4-chain comparison + recommendation + savings |
GET /gas/premium | $0.002 USDC (x402) | 9-chain full comparison |
GET /prices | Free | Native token USD prices (ETH, BNB, POL, AVAX, HYPE), 60s cache |
POST /mcp | Free / x402 | MCP Streamable HTTP endpoint (tools: get_gas_demo, get_cheapest_chain, get_gas_basic, get_gas_premium) |
GET /openapi.json | Free | OpenAPI 3.1 spec |
GET /llms.txt, /skill.md | Free | AI agent discovery files |
GET /.well-known/x402, /.well-known/x402.json, /.well-known/mcp.json, /.well-known/agent-card.json | Free | Discovery metadata |
GET /health | Free | Server health check |
Payment Flow (x402 v2)
GET /gas/basicor/gas/premium→402with requirements in thePAYMENT-REQUIREDheader (base64 JSON). A v1-shaped copy is also in the body for legacy clients.- Client signs an EIP-3009 USDC authorization on Base (
eip155:8453) - Resend with
PAYMENT-SIGNATUREheader → facilitator (Coinbase CDP) verifies → data response withPAYMENT-RESPONSEreceipt → USDC settled on-chain
If the upstream RPC / price feed is unavailable the API answers 503 and no payment is settled.
// Client example (@x402/fetch, x402 v2)
const { wrapFetchWithPayment } = require("@x402/fetch");
const { x402Client } = require("@x402/core/client");
const { ExactEvmScheme } = require("@x402/evm/exact/client");
const { privateKeyToAccount } = require("viem/accounts");
const client = new x402Client().register("eip155:*", new ExactEvmScheme(privateKeyToAccount(process.env.EVM_PRIVATE_KEY)));
const paidFetch = wrapFetchWithPayment(fetch, client);
const res = await paidFetch("https://api.mgo.chain-ops.xyz/gas/basic");
MCP (Claude / Cursor / any MCP client)
Remote Streamable HTTP server, no install:
{
"mcpServers": {
"mgo-gas": { "url": "https://api.mgo.chain-ops.xyz/mcp" }
}
}
Also published as npm package chain-ops-mgo and in the official MCP Registry (xyz.chain-ops/mgo). Paid tools return the decoded x402 payment requirements; pay with an x402 client against the resource URL.
Operations
- Access log +
/stats(Upstash Redis, key viaSTATS_KEY; send it asx-stats-keyheader) - Demo rate limit and the CoinGecko price cache are shared through the same Redis
- Secrets never live in this repo: see
.env.example
Deploy to Vercel
npm i -g vercel
vercel --prod
Platform Registration
- BlockRun — Register MCP server URL
- Dexter — One-line facilitator config
- x402.org — Automatic llms.txt crawling
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