#!/usr/bin/env node
/**
* Lighthouse Explorer MCP Server (CantonLoop)
*
* No API key required (public API)
* Base URL: https://lighthouse.cantonloop.com/api
*/
import { Server } from '@modelcontextprotocol/sdk/server/index.js';
import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';
import {
CallToolRequestSchema,
ListToolsRequestSchema,
} from '@modelcontextprotocol/sdk/types.js';
import { zodToJsonSchema } from 'zod-to-json-schema';
import { LighthouseClient } from './api-client.js';
import { tools } from './tools.js';
// Create client (no API key needed)
const client = new LighthouseClient();
// Create MCP server
const server = new Server(
{
name: 'lighthouse-mcp-server',
version: '1.0.0',
},
{
capabilities: {
tools: {},
},
}
);
// List available tools
server.setRequestHandler(ListToolsRequestSchema, async () => {
return {
tools: tools.map((tool) => ({
name: tool.name,
description: tool.description,
inputSchema: zodToJsonSchema(tool.inputSchema),
})),
};
});
// Handle tool calls
server.setRequestHandler(CallToolRequestSchema, async (request) => {
const { name, arguments: args } = request.params;
const tool = tools.find((t) => t.name === name);
if (!tool) {
throw new Error(`Unknown tool: ${name}`);
}
try {
const result = await tool.handler(client, args as any);
return {
content: [
{
type: 'text',
text: JSON.stringify(result, null, 2),
},
],
};
} catch (error) {
const message = error instanceof Error ? error.message : String(error);
return {
content: [
{
type: 'text',
text: `Error: ${message}`,
},
],
isError: true,
};
}
});
// Start server
async function main() {
const transport = new StdioServerTransport();
await server.connect(transport);
console.error('Lighthouse MCP Server running on stdio');
}
main().catch((error) => {
console.error('Fatal error:', error);
process.exit(1);
});
