infura-mcp-server
Version:
Model Context Protocol (MCP) server providing comprehensive read-only Ethereum blockchain access through Infura's infrastructure. Connect Claude Desktop, VS Code, and Cursor to 29 secure Ethereum JSON-RPC tools across 30+ networks including Ethereum, Poly
53 lines (50 loc) • 1.89 kB
JavaScript
import { callInfura } from "../lib/infura-client.js";
/**
* Function to get the current gas price from the Infura Ethereum JSON-RPC.
*
* @param {object} args The arguments for the function.
* @param {string} [args.network="mainnet"] The network to query.
* @returns {Promise<Object>} - The gas price in Wei as a hexadecimal value.
*/
const executeFunction = async ({ network = "mainnet" }) => {
return callInfura("eth_gasPrice", [], network);
};
/**
* Tool configuration for fetching gas price from Infura Ethereum JSON-RPC.
* @type {Object}
*/
const apiTool = {
function: executeFunction,
definition: {
type: "function",
function: {
name: "eth_getGasPrice",
description:
"Get the current gas price in wei for legacy (non-EIP-1559) transactions.\n\nArgs:\n - network (string, optional): Ethereum network to query. Defaults to 'mainnet'.\n\nReturns:\n - Hexadecimal string representing gas price in wei (e.g., '0x3b9aca00' for 1 Gwei).\n\nExamples:\n - \"Get mainnet gas price\": {}\n - \"Get Sepolia gas price\": { \"network\": \"sepolia\" }\n\nErrors:\n - InternalError: When Infura API is unavailable or returns an error.",
parameters: {
type: "object",
properties: {
network: {
type: "string",
description: "The Ethereum network to query, e.g., 'mainnet' or 'sepolia'.",
default: "mainnet",
},
response_format: {
type: "string",
enum: ["json", "markdown"],
description: "Output format: 'json' for structured data, 'markdown' for human-readable.",
default: "json",
},
},
required: [],
},
annotations: {
readOnlyHint: true,
destructiveHint: false,
idempotentHint: true,
openWorldHint: true,
},
},
},
};
export { apiTool };