Turn WhatsApp Into a 24/7 AI Sales Machine (With Code)

Your business gets WhatsApp messages at 3am. Nobody answers. Lead lost. I built a bot that handles this automatically — qualifies leads, answers questions, and sends payment links. Here is the architecture. The Stack Baileys (WhatsApp Web protocol, no Meta API needed) Claude API for intelligent responses SQLite for CRM (contacts, lead scores, conversation history) Zero external dependencies. Runs on a $5 VPS. How It Works // Message comes in sock.ev.on("messages.upsert", async ({ messages }) => { const msg = messages[0]; const text = msg.message?.conversation || ""; const from = msg.key.remoteJid; // Track in CRM crm.trackContact(from, text); // AI generates response with context const history = crm.getHistory(from, 20); const response = await claude.chat({ system: salesPrompt, messages: history }); // Send reply await sock.sendMessage(from, { text: response }); // Auto-detect buying intent if (response.includes("payment")) { crm.updateStage(from, "closing"); } }); Built-in CRM Ever