Etherscan

by otc-ai

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About

Integrates with Etherscan's API to provide Ethereum blockchain data tools for checking balances, viewing transactions, tracking transfers, fetching contract ABIs, monitoring gas prices, and resolving ENS names.

Details

Author: otc-ai
Repository: otc-ai/mcp-otc
License: MIT License
Categories: Design, Developer Tools, AI, Infrastructure, API, Frontend
Tags: #integration

- Balance Checking: Get ETH balance for any Ethereum address
- Transaction History: View recent transactions with detailed information
- Token Transfers: Track ERC20 token transfers with token details
- Contract ABI: Fetch smart contract ABIs for development
- Gas Prices: Monitor current gas prices (Safe Low, Standard, Fast)
- ENS Resolution: Resolve Ethereum addresses to ENS names

Setting up with Highlight

This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:

Download and install Highlight from highlightai.com/download
Navigate to the plugins tab and select "Add Custom Plugin"
Configure the plugin with the settings below
Plugin Name Etherscan

Command (node, npx, python, etc.) node
Arguments
- Argument 1 /path/to/mcp-etherscan-server/build/index.js
Environment
- ETHERSCAN_API_KEY your_api_key_here
Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
Enable "Start Automatically" if you want the plugin to start when Highlight launches

Setting up with Cursor

Open Cursor's settings
Navigate to the MCP section
Click "Add new Global MCP server"
Copy and paste the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "etherscan": {
            "env": {
                "ETHERSCAN_API_KEY": "your_api_key_here"
            },
            "args": [
                "/path/to/mcp-etherscan-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "etherscan": {
            "env": {
                "ETHERSCAN_API_KEY": "your_api_key_here"
            },
            "args": [
                "/c",
                "node",
                "/path/to/mcp-etherscan-server/build/index.js"
            ],
            "command": "cmd"
        }
    }
}

JSON

{
    "mcpServers": {
        "etherscan": {
            "env": {
                "ETHERSCAN_API_KEY": "your_api_key_here"
            },
            "args": [
                "/path/to/mcp-etherscan-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

Setting up with Claude Desktop

Open Claude Desktop's settings
Go to the Integrations tab
Click "Add MCP Server"
Use the configuration below based on your operating system

Note: Make sure Claude Desktop is running before attempting to connect.

JSON

{
    "mcpServers": {
        "etherscan": {
            "env": {
                "ETHERSCAN_API_KEY": "your_api_key_here"
            },
            "args": [
                "/path/to/mcp-etherscan-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "etherscan": {
            "env": {
                "ETHERSCAN_API_KEY": "your_api_key_here"
            },
            "args": [
                "/c",
                "node",
                "/path/to/mcp-etherscan-server/build/index.js"
            ],
            "command": "cmd"
        }
    }
}

JSON

{
    "mcpServers": {
        "etherscan": {
            "env": {
                "ETHERSCAN_API_KEY": "your_api_key_here"
            },
            "args": [
                "/path/to/mcp-etherscan-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

Setting up with Windsurf

Open Windsurf's preferences
Go to the Integrations section
Click "Add MCP Integration"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "etherscan": {
            "env": {
                "ETHERSCAN_API_KEY": "your_api_key_here"
            },
            "args": [
                "/path/to/mcp-etherscan-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "etherscan": {
            "env": {
                "ETHERSCAN_API_KEY": "your_api_key_here"
            },
            "args": [
                "/c",
                "node",
                "/path/to/mcp-etherscan-server/build/index.js"
            ],
            "command": "cmd"
        }
    }
}

JSON

{
    "mcpServers": {
        "etherscan": {
            "env": {
                "ETHERSCAN_API_KEY": "your_api_key_here"
            },
            "args": [
                "/path/to/mcp-etherscan-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

Setting up with Cline

Open Cline's settings
Navigate to the Integrations section
Click "Add MCP Server"
Copy and paste the configuration below based on your operating system

Note: Make sure to restart Cline after adding the configuration.

JSON

{
    "mcpServers": {
        "etherscan": {
            "env": {
                "ETHERSCAN_API_KEY": "your_api_key_here"
            },
            "args": [
                "/path/to/mcp-etherscan-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "etherscan": {
            "env": {
                "ETHERSCAN_API_KEY": "your_api_key_here"
            },
            "args": [
                "/c",
                "node",
                "/path/to/mcp-etherscan-server/build/index.js"
            ],
            "command": "cmd"
        }
    }
}

JSON

{
    "mcpServers": {
        "etherscan": {
            "env": {
                "ETHERSCAN_API_KEY": "your_api_key_here"
            },
            "args": [
                "/path/to/mcp-etherscan-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

Setting up with Goose

Open Goose's preferences
Go to the Integrations tab
Select "MCP Servers"
Click "Add New Server"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "etherscan": {
            "env": {
                "ETHERSCAN_API_KEY": "your_api_key_here"
            },
            "args": [
                "/path/to/mcp-etherscan-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "etherscan": {
            "env": {
                "ETHERSCAN_API_KEY": "your_api_key_here"
            },
            "args": [
                "/c",
                "node",
                "/path/to/mcp-etherscan-server/build/index.js"
            ],
            "command": "cmd"
        }
    }
}

JSON

{
    "mcpServers": {
        "etherscan": {
            "env": {
                "ETHERSCAN_API_KEY": "your_api_key_here"
            },
            "args": [
                "/path/to/mcp-etherscan-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

From the repository

1. Clone the repository:

git clone [your-repo-url]

cd mcp-etherscan-server

2. Install dependencies:

npm install

3. Create a .env file in the root directory:

ETHERSCAN_API_KEY=your_api_key_here

4. Build the project:

npm run build

Start the server:

npm start

The server will run on stdio, making it compatible with MCP clients like Claude Desktop.

You can use commands like:

Check the balance of 0x742d35Cc6634C0532925a3b844Bc454e4438f44e

Show me recent transactions for vitalik.eth

`check-balance`

Get ETH balance for any Ethereum address. Input: Ethereum address. Output: ETH balance in both Wei and ETH.

`get-transactions`

View recent transactions for a given Ethereum address. Input: Ethereum address, optional limit. Output: Recent transactions with timestamps, values, and addresses.

`get-token-transfers`

Track recent ERC20 token transfers for an Ethereum address. Input: Ethereum address, optional limit. Output: Recent ERC20 token transfers with token details.

`get-contract-abi`

Fetch the smart contract ABI for a specific contract address. Input: Contract address. Output: Contract ABI in JSON format.

`get-gas-prices`

Monitor current gas prices. Input: None. Output: Current gas prices in Gwei.

`get-ens-name`

Resolve an Ethereum address to its associated ENS name if available. Input: Ethereum address. Output: Associated ENS name if available.

1. check-balance
- Input: Ethereum address
- Output: ETH balance in both Wei and ETH

2. get-transactions
- Input: Ethereum address, optional limit
- Output: Recent transactions with timestamps, values, and addresses

3. get-token-transfers
- Input: Ethereum address, optional limit
- Output: Recent ERC20 token transfers with token details

4. get-contract-abi
- Input: Contract address
- Output: Contract ABI in JSON format

5. get-gas-prices
- Input: None
- Output: Current gas prices in Gwei

6. get-ens-name
- Input: Ethereum address
- Output: Associated ENS name if available

Claude Desktop / Cursor

Paste into your MCP client config file to install this server.

{
    "mcpServers": {
        "etherscan": {
            "env": {
                "ETHERSCAN_API_KEY": "your_api_key_here"
            },
            "args": [
                "/path/to/mcp-etherscan-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

Linux

{
    "env": {
        "ETHERSCAN_API_KEY": "your_api_key_here"
    },
    "args": [
        "/path/to/mcp-etherscan-server/build/index.js"
    ],
    "command": "node"
}

Macos

{
    "env": {
        "ETHERSCAN_API_KEY": "your_api_key_here"
    },
    "args": [
        "/path/to/mcp-etherscan-server/build/index.js"
    ],
    "command": "node"
}

Windows

{
    "env": {
        "ETHERSCAN_API_KEY": "your_api_key_here"
    },
    "args": [
        "/c",
        "node",
        "/path/to/mcp-etherscan-server/build/index.js"
    ],
    "command": "cmd"
}

MCP Etherscan Server

An MCP (Model Context Protocol) server that provides Ethereum blockchain data tools via Etherscan's API. Features include checking ETH balances, viewing transaction history, tracking ERC20 transfers, fetching contract ABIs, monitoring gas prices, and resolving ENS names.

Features

Prerequisites

- Node.js >= 18
- An Etherscan API key (get one at https://etherscan.io/apis)

Installation

1. Clone the repository:

git clone [your-repo-url]

cd mcp-etherscan-server

2. Install dependencies:

npm install

3. Create a .env file in the root directory:

ETHERSCAN_API_KEY=your_api_key_here

4. Build the project:

npm run build

Running the Server

Start the server:

npm start

The server will run on stdio, making it compatible with MCP clients like Claude Desktop.

How It Works

This server implements the Model Context Protocol (MCP) to provide tools for interacting with Ethereum blockchain data through Etherscan's API. Each tool is exposed as an MCP endpoint that can be called by compatible clients.

Available Tools

1. check-balance
- Input: Ethereum address
- Output: ETH balance in both Wei and ETH

2. get-transactions
- Input: Ethereum address, optional limit
- Output: Recent transactions with timestamps, values, and addresses

3. get-token-transfers
- Input: Ethereum address, optional limit
- Output: Recent ERC20 token transfers with token details

4. get-contract-abi
- Input: Contract address
- Output: Contract ABI in JSON format

5. get-gas-prices
- Input: None
- Output: Current gas prices in Gwei

6. get-ens-name
- Input: Ethereum address
- Output: Associated ENS name if available

Using with Claude Desktop

To add this server to Claude Desktop:

1. Start the server using npm start

2. In Claude Desktop:
- Go to Settings
- Navigate to the MCP Servers section
- Click "Add Server"
- Enter the following configuration:

     {

       "name": "Etherscan Tools",

       "transport": "stdio",

       "command": "node /path/to/mcp-etherscan-server/build/index.js"

     }

- Save the configuration

3. The Etherscan tools will now be available in your Claude conversations

Example Usage in Claude

You can use commands like:

Check the balance of 0x742d35Cc6634C0532925a3b844Bc454e4438f44e

Show me recent transactions for vitalik.eth

Development

To add new features or modify existing ones:

1. The main server logic is in src/server.ts
2. Etherscan API interactions are handled in src/services/etherscanService.ts
3. Build after changes: npm run build

License

MIT License - See LICENSE file for details

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About

Details

Jump to

Setting up with Highlight

From the repository

check-balance

get-transactions

get-token-transfers

get-contract-abi

get-gas-prices

get-ens-name

Claude Desktop / Cursor

Linux

Macos

Windows

MCP Etherscan Server

Features

Prerequisites

Installation

Running the Server

How It Works

Available Tools

Using with Claude Desktop

Example Usage in Claude

Development

License

Install

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Context 7

1Panel

`check-balance`

`get-transactions`

`get-token-transfers`

`get-contract-abi`

`get-gas-prices`

`get-ens-name`