MCP Etherscan Server

What is MCP Etherscan Server?

MCP Etherscan Server is an MCP (Model Context Protocol) server that provides Ethereum blockchain data tools via Etherscan's API. It is designed for developers and users who need to query on-chain information such as ETH balances, transaction history, ERC20 transfers, contract ABIs, gas prices, and ENS names through MCP-compatible clients like Claude Desktop.

How to use MCP Etherscan Server?

Install Node.js >=18, obtain an Etherscan API key from https://etherscan.io/apis, clone the repository, run npm install, create a .env file with ETHERSCAN_API_KEY=your_key, then build with npm run build and start with npm start. The server runs on stdio and can be added to Claude Desktop by configuring a new MCP server with the command node /path/to/build/index.js.

Key features of MCP Etherscan Server

• Check ETH balance for any Ethereum address
• View recent transactions with timestamps and values
• Track ERC20 token transfers with token details
• Fetch smart contract ABIs in JSON format
• Monitor current gas prices (Safe Low, Standard, Fast)
• Resolve Ethereum addresses to ENS names

Use cases of MCP Etherscan Server

• Querying an address’s ETH balance during a conversation
• Reviewing recent transaction history for an address or ENS name
• Retrieving a contract ABI for development or debugging
• Checking current gas prices before submitting a transaction
• Resolving an Ethereum address to its ENS name