// ═══════════════════════════════════ // ZENKAI AI HEALTH COACH — CORE ENGINE // ═══════════════════════════════════ const SYSTEM_PROMPT = `You are ZENKAI's AI Health Coach — a warm, knowledgeable health assistant on zenkaihealth.com. You help people discover which ZENKAI program is right for them and answer questions about treatments. You are NOT a doctor and always clarify that physicians review every case. ZENKAI PROGRAMS: • ZENKAI Weight ($199/mo) — Compounded tirzepatide. The most clinically effective weight loss medication available. Outperforms semaglutide (Ozempic/Wegovy) in trials with 22% average body weight reduction. Physician review in 24hr, free shipping, 90-day guarantee. • ZENKAI Men ($249/mo) — Testosterone replacement therapy (TRT) + ED treatment + hair restoration. For men experiencing low energy, low libido, brain fog, weight gain, or poor recovery. • ZENKAI Women ($239/mo) — Hormone replacement therapy (HRT) + tretinoin skincare + hair restoration. For women in perimenopause or menopause experiencing hot flashes, mood changes, low energy, weight gain, skin aging. • ZENKAI Recovery — NÖR cold plunge ($6,000) and Nordic Sauna ($8,000). Physical recovery hardware that amplifies any health protocol. KEY FACTS: - All prescriptions by board-certified US physicians - 24-hour physician review (async, no video call needed) - Free expedited shipping, plain packaging - No insurance required - 90-day results guarantee (vs MEDVi's 5-month wait) - Cancel anytime, no contracts - Available in all 50 states - Tirzepatide is compounded by FDA-regulated 503A pharmacy VS COMPETITORS: - MEDVi: $179 intro bait price → $399/mo after month 1 for tirzepatide. ZENKAI is $199 flat always. - MEDVi has no women's health program (still "coming soon") - MEDVi doesn't offer brand-name Zepbound — ZENKAI does - Hims/Roman: Lower quality, no tirzepatide, less clinical oversight YOUR CONVERSATION STYLE: - Warm, direct, confident — like a knowledgeable friend who happens to know a lot about health - Keep responses SHORT (2-4 sentences max unless explaining something complex) - Ask ONE question at a time to understand their situation - After 2-3 exchanges, recommend the right program specifically - Use their name if they share it - When they seem ready: "Want me to get you started? It's a free 4-minute assessment and you only pay if you qualify." - Never diagnose. Never say "you should take X medication." Say "based on what you're describing, ZENKAI [program] is designed for exactly that." - NEVER recommend going to a different provider. Always guide toward ZENKAI intake. LEAD CAPTURE: When the conversation reaches a natural close or they're ready to start, say: "To get you started, I just need your name and email — a physician will review your case within 24 hours, and you won't be charged unless you qualify." INTAKE LINK: Direct people to https://zenkaihealth.com//intake when ready to start.`; let messages = []; let isOpen = false; let isLoading = false; let hasOpened = false; function toggleChat() { isOpen = !isOpen; document.getElementById('zk-window').classList.toggle('open', isOpen); document.getElementById('zk-badge').style.display = 'none'; if (isOpen && !hasOpened) { hasOpened = true; setTimeout(() => { addMessage('ai', "Hi! I'm ZENKAI's AI Health Coach. I'm here to help you find the right program and answer any questions. 👋\n\nWhat brings you here today?"); showQuickReplies([ "Weight loss", "Men's health / TRT", "Women's health / Hormones", "Just exploring" ]); }, 400); } if (isOpen) { setTimeout(() => document.getElementById('zk-input').focus(), 300); } } function addMessage(role, content) { const container = document.getElementById('zk-messages'); const msg = document.createElement('div'); msg.className = `msg ${role}`; const avatar = document.createElement('div'); avatar.className = 'msg-avatar'; avatar.textContent = role === 'ai' ? '⚡' : 'You'; const bubble = document.createElement('div'); bubble.className = 'msg-bubble'; bubble.innerHTML = formatMessage(content); msg.appendChild(avatar); msg.appendChild(bubble); container.appendChild(msg); container.scrollTop = container.scrollHeight; return bubble; } function formatMessage(text) { return text .replace(/\*\*(.*?)\*\*/g, '$1') .replace(/\[([^\]]+)\]$(https?:\/\/[^$]+)\)/g, '$1') .replace(/https:\/\/zenkaihealth\.com\/intake\.html/g, 'Start Free Assessment →') .replace(/\n\n/g, '

') .replace(/\n/g, '
'); } function showQuickReplies(options) { const container = document.getElementById('zk-quick-replies'); container.innerHTML = ''; options.forEach(opt => { const btn = document.createElement('button'); btn.className = 'qr-btn'; btn.textContent = opt; btn.onclick = () => { container.innerHTML = ''; handleUserMessage(opt); }; container.appendChild(btn); }); } function showTyping() { const container = document.getElementById('zk-messages'); const typing = document.createElement('div'); typing.className = 'msg ai'; typing.id = 'zk-typing'; typing.innerHTML = `

⚡

`; container.appendChild(typing); container.scrollTop = container.scrollHeight; } function removeTyping() { const t = document.getElementById('zk-typing'); if (t) t.remove(); } async function handleUserMessage(text) { if (!text.trim() || isLoading) return; clearQuickReplies(); addMessage('user', text); messages.push({ role: 'user', content: text }); document.getElementById('zk-input').value = ''; document.getElementById('zk-send').disabled = true; isLoading = true; showTyping(); try { const response = await fetch('https://api.anthropic.com/v1/messages', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ model: 'claude-sonnet-4-20250514', max_tokens: 1000, system: SYSTEM_PROMPT, messages: messages }) }); const data = await response.json(); const reply = data.content?.[0]?.text || "I'm having trouble connecting. Please email us at hello@zenkaihealth.com or try again."; removeTyping(); messages.push({ role: 'assistant', content: reply }); addMessage('ai', reply); // Smart quick reply suggestions based on context suggestQuickReplies(reply); } catch (err) { removeTyping(); addMessage('ai', "I'm having a connection issue. You can reach our team at **hello@zenkaihealth.com** or [start your free assessment](/intake) directly."); } isLoading = false; document.getElementById('zk-send').disabled = false; document.getElementById('zk-input').focus(); } function suggestQuickReplies(reply) { const lower = reply.toLowerCase(); if (lower.includes('tirzepatide') || lower.includes('weight')) { showQuickReplies(['How does tirzepatide work?', 'Is $199 the real price?', 'Am I a good candidate?', 'Start my assessment']); } else if (lower.includes('testosterone') || lower.includes('trt') || lower.includes("men's")) { showQuickReplies(['What are TRT symptoms?', 'How quickly does TRT work?', 'Start my assessment', 'Tell me about ED treatment']); } else if (lower.includes('hrt') || lower.includes("women's") || lower.includes('menopause')) { showQuickReplies(['What HRT options are available?', 'Is HRT safe?', 'Start my assessment', 'Tell me about the skincare program']); } else if (lower.includes('assess') || lower.includes('start') || lower.includes('qualify')) { showQuickReplies(['Start my assessment →', 'What happens after I apply?', 'How quickly will I hear back?']); } } function clearQuickReplies() { document.getElementById('zk-quick-replies').innerHTML = ''; } function sendMessage() { const input = document.getElementById('zk-input'); handleUserMessage(input.value.trim()); } // Enter key to send document.getElementById('zk-input').addEventListener('keydown', e => { if (e.key === 'Enter' && !e.shiftKey) { e.preventDefault(); sendMessage(); } }); // Auto-open after 8 seconds on first visit setTimeout(() => { if (!isOpen && !hasOpened) { document.getElementById('zk-badge').style.display = 'flex'; } }, 3000);

ZENKAI Health Coach