Appendix turns any AI health conversation into a physician-reviewed opinion, with a prescription if you need one.
No chatbot. No app. $49/mo for you + $29 per family member. Use the AI you already have — our doctors handle the rest.
Your agent writes a medical encounter summary, submits it through our API, and a real doctor signs off.
Describe your symptoms to Claude, ChatGPT, or any AI assistant. The AI helps you write a thorough clinical letter — asking about your history, allergies, and symptoms — with its intrinsic knowledge further informed by our medical knowledge base.
Our API reviews your submission for completeness (not medical decisions). If anything's missing, your AI asks follow-up questions and resubmits. No personal information leaves your AI until you're ready.
One of our board-certified physicians personally reviews your letter and writes back with their clinical assessment, personalized guidance, and a prescription if medically appropriate.
Use any AI you already have
We didn't build a chatbot because you already have the best one. Appendix works with the AI assistant you already trust — Claude Code, ChatGPT, Gemini, or anything that can follow instructions. Install our skill, connect via MCP, or just paste your letter at appendix.com/new.
Doctors who work with your AI
Our physicians believe AI-assisted documentation leads to more thorough, more honest clinical conversations. They review your full letter — your symptoms, your history, what your AI told you — and write back with their professional assessment, guidance, and a prescription if appropriate.
Less than a copay to join the practice
$49/mo for you, +$29 for each family member — adults and kids as young as 6 months. Add your whole family to your account and skip the waiting room whenever a health question comes up. Every submission gets a full physician response — a clinical assessment, personalized guidance, and a prescription if medically appropriate. No copays, no insurance needed, no surprise bills.
When you join Appendix, you're joining a practice. Our doctors are board-certified physicians who chose to work at the intersection of AI and medicine because they believe it leads to better care. They're here to support you and your agent.
Board-certified in Family Medicine
Board-certified in Internal Medicine
Board-certified in Family Medicine
$49
/month
+$29/mo per additional family member
Add Appendix to the tools you already use
Copy the instructions below and paste them into ChatGPT, Claude, Gemini, or any AI conversation. Your AI will walk you through the clinical intake, then direct you to submit your letter.
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Not sure if your concern fits? Submit it anyway. Our physicians review every case and provide personalized clinical guidance — even if a prescription isn't the right answer.