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Etherscan MCP Server
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Etherscan MCP Server

An implementation of an Etherscan API client based on Go language, supporting multi - chain blockchain data query services for LLM applications through the Model Context Protocol (MCP).
FinanceDeveloper tools#Blockchain query#Multi - chain support#API client#Smart contract.Go
2.5 points
17

What is Etherscan MCP Server?

This is an Etherscan API client implemented in Go language, specifically designed for the Model Context Protocol (MCP). It allows LLM (Large Language Model) applications to access data from over 50 blockchain networks through simple natural language queries.

How to use Etherscan MCP Server?

You can use it in two ways: 1) Directly integrate it into LLM applications in standard input/output mode; 2) Access it through an HTTP interface in SSE (Server - Sent Events) mode.

Use cases

Suitable for various scenarios that require real - time blockchain data: wallet balance query, smart contract interaction, transaction status tracking, Gas fee monitoring, etc.

Main features

Multi - chain supportSupports over 50 blockchain networks, including Ethereum, BNB Chain, Polygon, etc.
Natural language queryYou can obtain blockchain data by asking simple English questions.
Dual operation modesSupports two integration methods: standard IO and SSE.
Comprehensive data coverageProvides 19 types of blockchain data query tools for accounts, blocks, contracts, transactions, etc.

Advantages and limitations

Advantages
A single API key supports all chains, simplifying management
No complex programming is required, and you can query with natural language
Fast response speed and strong data real - time performance
Open - source and free, with community support
Limitations
An Etherscan API key is required (free to apply)
Some advanced features may require an Etherscan paid plan
The free version has API call frequency limits

How to use

Get an API key
Go to the Etherscan official website to register and obtain an API key.
Install the server
Clone the repository and build an executable file.
Configure environment variables
Set your Etherscan API key.
Run the server
Select the operating mode that suits your needs.

Usage examples

Query account balanceGet the ETH or token balance of a specified address
Get contract informationQuery the source code and ABI of a verified smart contract
Monitor Gas priceGet the current network Gas fee recommendation

Frequently Asked Questions

How to get an Etherscan API key?
Which blockchain networks are supported?
What's the difference between SSE mode and standard mode?
Is there a call frequency limit?

Related resources

MCP protocol documentation
Official documentation of the Model Context Protocol
Etherscan API documentation
Official Etherscan API documentation
GitHub repository
Project source code and latest updates
List of supported networks
All supported blockchain networks
Installation
Copy the following command to your Client for configuration
{
  "mcpServers": {
    "etherscan-mcp-server": {
      "command": "etherscan-mcp-server",
      "env": {
        "ETHERSCAN_API_KEY": "$your_api_key"
      }
    }
   }
}

{
  "mcpServers": {
    "etherscan-mcp-server": {
      "url": "http://localhost:4000/sse",
      "env": {
        "ETHERSCAN_API_KEY": "$your_api_key"
      }
    }
   }
}
Note: Your key is sensitive information, do not share it with anyone.
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