LinkedIn MCP Server

const { z } = require('zod'); // Simple MCP server implementation without the full SDK exports.handler = async (event) => { // Only handle POST requests if (event.httpMethod !== 'POST') { return { statusCode: 405, body: 'Method Not Allowed' }; } try { const body = JSON.parse(event.body); const { method, params, id } = body; // MCP initialization - provide server information and capabilities if (method === 'mcp/init') { return { statusCode: 200, headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ jsonrpc: '2.0', result: { server: { name: 'basic-mcp-server', version: '1.0.0', }, protocol: { version: '0.1', capabilities: { logging: {} } } }, id }) }; } // List tools available if (method === 'mcp/listTools') { return { statusCode: 200, headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ jsonrpc: '2.0', result: { tools: [ { name: 'run-analysis-report', description: 'Generates a sample data analysis report with random growth metrics.', schema: { type: 'object', properties: { days: { type: 'number', description: 'Number of days to analyze' } }, required: [], additionalProperties: false } } ] }, id }) }; } // Call a tool if (method === 'mcp/callTool') { const { name, args } = params; if (name === 'run-analysis-report') { // Default to 7 days if not specified const days = args?.days || 7; const random = Math.random() * 100; return { statusCode: 200, headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ jsonrpc: '2.0', result: { content: [ { type: 'text', text: JSON.stringify({ lastNDays: days, data: Array.from({ length: days }, (_, i) => `Day ${i + 1} had ${(random * days).toFixed(2)} growth.`), }) } ] }, id }) }; } return { statusCode: 400, headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ jsonrpc: '2.0', error: { code: -32602, message: `Tool '${name}' not found` }, id }) }; } // List resources if (method === 'mcp/listResources') { return { statusCode: 200, headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ jsonrpc: '2.0', result: { resources: [ { name: 'interpreting-reports', uri: 'docs://interpreting-reports', metadata: { mimeType: 'text/plain' } } ] }, id }) }; } // Read a resource if (method === 'mcp/readResource') { const { uri } = params; if (uri === 'docs://interpreting-reports') { return { statusCode: 200, headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ jsonrpc: '2.0', result: { contents: [ { uri: 'docs://interpreting-reports', text: `Reports from this MCP include an array of text that informs the growth over a specified number of days. It's unstructured text but is consistent so parsing the information can be based on looking at a single line to understand where the data is.` } ] }, id }) }; } return { statusCode: 404, headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ jsonrpc: '2.0', error: { code: -32602, message: `Resource '${uri}' not found` }, id }) }; } // Method not found return { statusCode: 400, headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ jsonrpc: '2.0', error: { code: -32601, message: `Method '${method}' not found` }, id }) }; } catch (error) { console.error('Error processing request:', error); return { statusCode: 500, headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ jsonrpc: '2.0', error: { code: -32603, message: 'Internal server error' }, id: '' }) }; } };