{"service":"Connection-Key Server","version":"1.0.0","endpoints":{"health":"GET /health","chat":"POST /api/chat","reading":"POST /api/reading/generate","chart":"POST /api/chart/calculate (NEW)","matching":"POST /api/matching","stripe_webhook":"POST /api/stripe/webhook (public)","stripe_checkout":"POST /api/stripe/create-checkout-session","user":"GET /api/user/:userId"}}