/**
* MCP (Model Context Protocol) Integration Module
* Handles communication with external tools for live data retrieval
*/
class MCPClient {
constructor(serverUrl = process.env.MCP_SERVER_URL || 'http://localhost:3001') {
this.serverUrl = serverUrl;
this.tools = new Map();
this.initialized = false;
}
/**
* Initialize MCP connection
*/
async init() {
try {
// Connect to MCP server and load available tools
console.log('🔌 Initializing MCP client...');
this.tools.set('fetchWebsiteContent', {
description: 'Fetch content from website pages, blogs, and documentation',
handler: this.fetchWebsiteContent.bind(this)
});
this.tools.set('searchExternalData', {
description: 'Search for real-time data from external sources',
handler: this.searchExternalData.bind(this)
});
this.tools.set('verifyCurrent', {
description: 'Verify if information is current or outdated',
handler: this.verifyCurrent.bind(this)
});
this.initialized = true;
console.log('✅ MCP initialized with', this.tools.size, 'tools');
} catch (error) {
console.error('❌ Failed to initialize MCP:', error.message);
this.initialized = false;
}
}
/**
* Execute a tool
*/
async executeTool(toolName, params) {
if (!this.tools.has(toolName)) {
throw new Error(`Tool not found: ${toolName}`);
}
const tool = this.tools.get(toolName);
return await tool.handler(params);
}
/**
* Fetch website content
*/
async fetchWebsiteContent(params) {
const { path, query } = params;
// In production, this would fetch from actual website content
return {
source: 'Website RAG',
path: path || '/',
query: query,
content: `Content from ${path || 'homepage'}`,
timestamp: new Date().toISOString(),
cached: true
};
}
/**
* Search external data sources
*/
async searchExternalData(params) {
const { query, type = 'general' } = params;
// In production, this would search APIs, news sources, etc.
return {
source: 'External Data',
query: query,
type: type,
results: `Results for: ${query}`,
timestamp: new Date().toISOString(),
freshness: 'recent'
};
}
/**
* Verify if information is current
*/
async verifyCurrent(params) {
const { query, timestamp } = params;
// In production, this would check data freshness against live sources
return {
isCurrently: true,
query: query,
lastUpdated: new Date().toISOString(),
confidence: 0.95
};
}
/**
* Get available tools
*/
getTools() {
return Array.from(this.tools.keys());
}
/**
* Check if tool should be used for a query
*/
shouldUseTool(query) {
const timeSensitivePatterns = /current|latest|today|now|recent|live|real-time|update/i;
const externalPatterns = /api|external|link|website|news|stock|price|weather/i;
return {
requiresLiveData: timeSensitivePatterns.test(query) || externalPatterns.test(query),
suggestedTools: this.suggestTools(query)
};
}
/**
* Suggest appropriate tools for a query
*/
suggestTools(query) {
const suggestions = [];
if (/website|page|blog|content|article|documentation/i.test(query)) {
suggestions.push('fetchWebsiteContent');
}
if (/current|latest|recent|external|news|data|update/i.test(query)) {
suggestions.push('searchExternalData');
}
if (/verify|check|confirm|valid|accurate|fresh/i.test(query)) {
suggestions.push('verifyCurrent');
}
return suggestions.length > 0 ? suggestions : ['searchExternalData'];
}
}
export default MCPClient;
