Frequently Asked Questions (FAQ) about @xiaok/etherscan-mcp

Q: What is the @xiaok/etherscan-mcp server? A: It’s a Model Context Protocol (MCP) server designed to allow AI Agents to easily access and interact with data from Etherscan’s API.

Q: What is an MCP Server? A: MCP (Model Context Protocol) is an open protocol that standardizes how applications provide context to LLMs. An MCP server acts as a bridge, allowing AI models to access external data sources.

Q: How can I test the @xiaok/etherscan-mcp server? A: You can use mcp-cli (via npx fastmcp dev server.js or npx fastmcp dev server.ts) or the official MCP Inspector (via npx fastmcp inspect server.ts).

Q: How do I use the @xiaok/etherscan-mcp server with Claude Desktop? A: You need to configure Claude Desktop with the server’s command, arguments, and environment variables, including your Etherscan API key. See the configuration example in the documentation.

Q: Where can I find the Etherscan API documentation? A: The API documentation is available at https://docs.etherscan.io/etherscan-v2.

Q: Which blockchain networks are supported? A: The server supports various chains listed at https://docs.etherscan.io/etherscan-v2/getting-started/supported-chains. Note that not all endpoints are supported by all chains; check https://forms.blockscan.com/public/grid/3E9QiN00NLhCQVibiP3Z-Bpqhmd7zGXsgapEKJupxiI for endpoint support.

Q: What is UBOS? A: UBOS is a full-stack AI Agent development platform focused on bringing AI Agents to every business department. It helps you orchestrate AI Agents, connect them with your enterprise data, build custom AI Agents, and create Multi-Agent Systems.

Q: Do I need an Etherscan API Key to use this? A: Yes, the server requires an Etherscan API key to authenticate and access data from Etherscan. You must set the ETHERSCAN_API_KEY environment variable.

Q: What kind of data can I retrieve from Etherscan using the @xiaok/etherscan-mcp server? A: You can retrieve various blockchain data, including transaction details, block information, smart contract code, event logs, and account balances.

Q: Can I use this server to write data to the blockchain? A: No, the @xiaok/etherscan-mcp server is designed for reading data from Etherscan. Writing data to the blockchain requires different tools and techniques.

Q: How does this server improve AI Agent performance? A: By providing direct and structured access to blockchain data, the server allows AI Agents to make more informed decisions, automate tasks, and gain a deeper understanding of blockchain activity.