Inspiration Booking flights, hotels, and local transport across multiple apps is messy and time-consuming. Our inspiration came from the need for a unified, secure, and intelligent travel companion that uses AI agents to handle all bookings and personalization automatically through a secure Agent-to-Agent (A2A) protocol.
What it does TripHack provides an AI-powered unified platform (web + mobile) for travel planning, booking, and management. It integrates flights, hotels, transport, activities, maps, and visa information in one place. Users get personalized itineraries, multilingual voice search, and real-time updates — while vendors manage listings, bookings, and analytics from their dashboards.
How we built it TripHack is built using: Frontend: Flutter (mobile app) and React.js (web app) Backend: FastAPI with LangGraph for multi-agent orchestration AI Layer: RAG + LLM smart routing, Model Context Protocol (MCP), and Agent-to-Agent (A2A) communication Database & Authentication: Firebase (Firestore, Cloud Storage, Authentication) Security: Dynamic session key creation and AI validation using BERT & RoBERT models APIs & Tools: Google Maps, Serper API, Selenium for scraping, DuckDuckGo for search
Challenges we ran into Synchronizing real-time communication between multiple AI agents. Handling fragmented travel APIs and ensuring data accuracy. Implementing secure A2A communication and session management. Maintaining consistent updates across web and app platforms.
Accomplishments that we're proud of Designed a secure A2A communication protocol for intelligent multi-agent collaboration. Achieved real-time synchronization between app and web using Firebase. Integrated RAG + LLM for dynamic query routing and reasoning. Built a modular architecture capable of scaling across multiple travel services.
What we learned How to design multi-agent orchestration using LangGraph and A2A protocol. The importance of security layers like session keys and model validation (BERT, RoBERT). Balancing performance and accuracy when integrating multiple real-time APIs.
What's next for TripHack Extend A2A protocol for cross-platform interoperability between other AI systems. Add flight, hotel, and cab partnerships via affiliate APIs for real-world deployment. Launch TripHack as a production-ready web and mobile platform with premium user tiers.
Built With Flutter · React.js · FastAPI · LangGraph · Firebase (Firestore, Cloud Storage, Auth) · RAG + LLM · Model Context Protocol (MCP) · Agent-to-Agent (A2A) Protocol · Python · BERT · RoBERT · Google Maps API · Serper API · Selenium · DuckDuckGo Search API
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