Etherscan MCP Server

Example Use Cases

• 1

  Query multi-chain blockchain data using a unified Etherscan API client.

• 2

  Access blockchain data via stdin/stdout or SSE server modes for LLM integration.

• 3

  Fallback RPC access on certain chains to avoid paid API plan limitations.

Description

The Etherscan MCP Server is a Go implementation of an Etherscan API client designed for the Model Context Protocol (MCP). It enables LLM applications to retrieve multi-chain blockchain data such as account balances, block info, contract data, transactions, and gas prices. The server supports over 50 chains with a single API key and includes a built-in RPC fallback for certain chains to avoid paid plan requirements. It offers both stdin/stdout and SSE modes for flexible integration.