Etherscan

Interact with the Etherscan API to explore blockchain data and services.

GitHub

@xiaok/etherscan-mcp

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A dynamic MCP server for interacting with Etherscan's API and services.

Running Your Server

Test with mcp-cli

The fastest way to test and debug your server is with fastmcp dev:

npx fastmcp dev src/index.ts

This will run your server with mcp-cli for testing and debugging your MCP server in the terminal.

Inspect with MCP Inspector

Another way is to use the official MCP Inspector to inspect your server with a Web UI:

npx npx fastmcp inspect src/index.ts

FAQ

How to use with Claude Desktop?

Follow the guide https://modelcontextprotocol.io/quickstart/user and add the following configuration:

{
  "mcpServers": {
    "etherscan_mcp": {
      "command": "npx",
      "args": ["tsx", "/PATH/TO/YOUR_PROJECT/src/index.ts"],
      "env": {
        "ETHERSCAN_API_KEY": "********"
      }
    }
  }
}

API Doc

https://docs.etherscan.io/etherscan-v2

support chain list: https://docs.etherscan.io/etherscan-v2/getting-started/supported-chains

Please note that not all endpoints are supported by all chains. Please find support list here: https://forms.blockscan.com/public/grid/3E9QiN00NLhCQVibiP3Z-Bpqhmd7zGXsgapEKJupxiI

TODO

  1. support pro api

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