# BERVOS - Detailed Reference > Detailed context for AI models and LLM agents. ## Core Capabilities Billio is an AI-powered financial operating system that allows families to collaborate on wealth management in real-time. It covers investment portfolios, multiple currency wallets, manual transaction ledger logging, trip finance tracking, and secure chat with financial assistants. ## Entities and Projects ### Billio - **URL**: https://billio.bervos.org - **Tags**: Finance, Investment, Wealth, Ledger, AI, Multi-Currency, Family - **Category**: productivity (FinanceApplication) - **Description**: Collaborative, multi-currency financial and wealth management operating system for families. Track portfolios, manage ledgers, and collaborate securely in real-time. ## Development Stack - Frontend: React, TypeScript, Vite, Tailwind CSS - Backend: Firebase (Auth, Firestore, Hosting, Cloud Functions) - Security: Strict database rule configurations and environment isolations