EVM MCP Server

#!/usr/bin/env node import { fileURLToPath } from 'url'; import { dirname, join } from 'path'; import { readFileSync, writeFileSync, existsSync, mkdirSync } from 'fs'; import { homedir } from 'os'; const __filename = fileURLToPath(import.meta.url); const __dirname = dirname(__filename); const packagePath = join(__dirname, '..'); const serverPath = join(packagePath, 'build', 'index.js'); function getClaudeConfigPath() { const platform = process.platform; if (platform === 'darwin') { // macOS return join(homedir(), 'Library', 'Application Support', 'Claude', 'claude_desktop_config.json'); } else if (platform === 'win32') { // Windows const appData = process.env.APPDATA || join(homedir(), 'AppData', 'Roaming'); return join(appData, 'Claude', 'claude_desktop_config.json'); } else { // Linux return join(homedir(), '.config', 'Claude', 'claude_desktop_config.json'); } } function readConfig() { const configPath = getClaudeConfigPath(); if (!existsSync(configPath)) { console.log('Claude config file not found. Creating new config...'); // Create directory if it doesn't exist const configDir = dirname(configPath); if (!existsSync(configDir)) { mkdirSync(configDir, { recursive: true }); } return { mcpServers: {} }; } try { const configData = readFileSync(configPath, 'utf-8'); return JSON.parse(configData); } catch (error) { console.error('Error reading Claude config:', error.message); return { mcpServers: {} }; } } function writeConfig(config) { const configPath = getClaudeConfigPath(); try { writeFileSync(configPath, JSON.stringify(config, null, 2), 'utf-8'); console.log('✓ Claude Desktop configuration updated successfully!'); console.log(` Config location: ${configPath}`); } catch (error) { console.error('Error writing Claude config:', error.message); } } function configureEVM() { console.log('🔧 Configuring EVM MCP Server for Claude Desktop...'); const config = readConfig(); // Get RPC URL from environment or prompt const rpcUrl = process.env.RPC_URL || process.env.ETHEREUM_RPC_URL; const chainId = process.env.CHAIN_ID || '1'; if (!rpcUrl) { console.log('\n⚠️ No RPC_URL environment variable found.'); console.log('Please set your RPC URL as an environment variable:'); console.log(' export RPC_URL=https://mainnet.infura.io/v3/YOUR_API_KEY'); console.log(' export CHAIN_ID=1'); console.log('\nOr configure it manually in Claude Desktop settings.'); console.log(`\nServer path: ${serverPath}`); return; } console.log(`Server path: ${serverPath}`); console.log(`RPC URL: ${rpcUrl}`); console.log(`Chain ID: ${chainId}`); // Check if server file exists if (!existsSync(serverPath)) { console.error('\n❌ Server file not found. Please run "npm run build" first.'); return; } // Configure the server config.mcpServers = config.mcpServers || {}; config.mcpServers['evm-mcp'] = { command: 'node', args: [serverPath], env: { RPC_URL: rpcUrl, CHAIN_ID: chainId } }; writeConfig(config); console.log('\n✨ Configuration complete!'); console.log('Please restart Claude Desktop for changes to take effect.'); console.log('\nTo configure manually, use these settings:'); console.log(`Command: node ${serverPath}`); console.log(`Environment Variables:`); console.log(` RPC_URL: ${rpcUrl}`); console.log(` CHAIN_ID: ${chainId}`); } // Run configuration configureEVM();