{"success":true,"message":"SolXai Chat API Server (v2 — AI Engine with tool calling)","version":"2.0.0","storage":"postgres","engine":"vercel-ai-sdk-streamtext","tools":109,"endpoints":["POST   /chat              — Send message (JSON response)","POST   /chat/stream       — Send message (SSE streaming)","GET    /chat/:id/history","POST   /chat/session","DELETE /chat/:id","PATCH  /chat/:id/title","GET    /chat/health","POST   /auth/login","GET    /user/:id/sessions","GET    /admin/stats       — Admin: dashboard stats","GET    /admin/users       — Admin: all users","PATCH  /admin/users/:id/status — Admin: approve/waitlist/reject user","GET    /admin/sessions    — Admin: all sessions","GET    /admin/sessions/:id/messages — Admin: session messages"]}