{"service": "nesion", "version": "1.0.0", "status": "ok", "endpoints": {"health": "GET /health", "liveness": "GET /liveness", "readiness": "GET /readiness", "pricing": "GET /v1/pricing", "metrics": "GET /v1/metrics", "billing_status": "GET /v1/billing/status (bearer token)", "create_quote": "POST /v1/billing/quote (bearer token)", "settle_payment": "POST /v1/payments/usdc/settle (bearer token)", "usage_charge": "POST /v1/usage (bearer token)", "stripe_webhook": "POST /v1/webhooks/stripe (stripe signature)"}}