Etherscan MCP Server

Example Use Cases

• 1

  Up-to-date on-chain data (balances, normal/internal transactions, token transfers, mined blocks) across EVM-compatible chains.

• 2

  Contract-level information (verified source code, ABI, bytecode, storage) to analyze or interact with smart contracts.

• 3

  Execute complex, multi-step blockchain queries from a natural-language prompt — the included agent tool plans and issues multiple Etherscan calls using Google AI.

Description

This server wraps a large portion of the Etherscan API V2 and exposes endpoints as MCP tools, allowing assistants to fetch balances, transactions, token transfers, contract ABIs/source code, logs, and more. It also provides Geth/JSON-RPC-like proxy endpoints (block data, transactions, eth_call, estimateGas, etc.) and an agent tool that uses Google AI to plan and run multi-step Etherscan queries. The server is designed to run locally and integrate with MCP hosts (e.g., Claude Desktop, VS Code extension) via stdio and requires Etherscan and Google API keys for full functionality.