Base Network MCP Server

A Model Context Protocol (MCP) server for accessing Base Network blockchain data. Provides tools for querying blocks, transactions, balances, and smart contracts on Base mainnet and testnet.

Features

• 9 blockchain tools (7 work without API key)
• Base mainnet and Sepolia testnet support
• Real-time blockchain data access
• Docker support
• Multiple transport options (stdio, HTTP)

Quick Start

Install and Build

git clone https://github.com/u-Operating-System/basescan-mcp-server.git
cd basescan-mcp-server
npm install
npm run build

Run the Server

# For Claude Desktop (recommended)
npm start

# For HTTP server
MCP_TRANSPORT_TYPE=http npm start

Optional: BaseScan API Key

Get enhanced features by adding a free BaseScan API key:

1. Visit https://basescan.org/apis
2. Create account and get API key
3. Add to environment: BASESCAN_API_KEY=your-key

Claude Desktop Setup

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "base-network": {
      "command": "node",
      "args": ["/path/to/basescan-mcp-server/build/index.js"],
      "env": {
        "BASESCAN_API_KEY": "your-key-here"
      }
    }
  }
}

Docker

# Basic setup
docker run -p 3010:3010 basescan-mcp-server

# With API key
docker run -p 3010:3010 -e BASESCAN_API_KEY=your-key basescan-mcp-server

Available Tools

Tool	Description	Requires API Key
get_latest_block	Latest block information	No
get_block	Block by number/hash	No
get_transaction	Transaction details	No
get_balance	ETH balance lookup	No
get_gas_price	Current gas prices	No
check_contract	Smart contract detection	No
get_network_stats	Network statistics	No
get_account_transactions	Account transaction history	Yes
get_account_tokens	Token transfer history	Yes

Configuration

Configure via environment variables:

NODE_ENV=development              # development|production
MCP_TRANSPORT_TYPE=stdio          # stdio|http
MCP_HTTP_PORT=3010               # HTTP port
BASESCAN_API_KEY=your-key        # BaseScan API key (optional)
MCP_LOG_LEVEL=info               # debug|info|warning|error

Security

• Store API keys in environment variables
• Never commit .env files with real values
• Use HTTPS in production

Networks

• Base Mainnet: Chain ID 8453
• Base Sepolia: Chain ID 84532

Development

npm run dev            # Development with hot reload
npm test               # Run tests
npm run lint           # Code linting
npm run format         # Code formatting

License

MIT