_Hackathons always scared me a bit. PromptWars changed that. This time, I decided to keep it simple and actually finish something. I picked the Physical Event Experience challenge and built a tiny web app called Event Buddy AI. The problem I wanted to solve “Where is Hall A or Hall B?” “Where’s the help desk or food court?” “What can I attend next that actually matches my interests?” “I only have 30 minutes. What should I do?” Most event apps are either too heavy or don’t give quick answers. I wanted a lightweight assistant that feels like asking a friend who knows the venue and schedule. What I built – Event Buddy AI Ask venue questions (halls, food, washrooms, help desk). Get a suggestion for the next session based on their interests (AI, design, startup, etc.). Use a few sample questions if they don’t know what to type. See small info cards for halls and key locations. It’s not a big enterprise product – it’s a focused helper that answers “What do I do now and where do I go?” Tech stack Google Antigravity for planning and generating most of the code. Python + Flask for the backend. HTML, CSS, JS for a simple, responsive UI. Local JSON file to store sample event data (halls, sessions, locations). Google Cloud Run to deploy the app and get a public URL. Antigravity helped me quickly scaffold the project structure, generate the Flask app, and even prepare it for Cloud Run. I focused more on the logic and UX instead of wiring everything from scratch. How it works The user types a question or clicks a sample question. The backend does some simple intent + keyword matching on the question. It returns: A direct answer (e.g., “Hall A is on Level 1 near the main entrance”), or A recommended session (e.g., “You like AI? Attend ‘Intro to GenAI’ at 3:00 PM in Hall B.”) The UI shows the answer clearly, with an option to ask another question. No heavy databases, no complex auth – just a fast conversational layer over structured event data. Challenges I hit Cloud Run permissions: Time management: What I learned AI tools like Google Antigravity are powerful if you give them a clear prompt and a realistic scope. Cloud Run makes it easy to go from “local Flask app” to a URL you can share with anyone. A small, well-explained project with clean UX and a live demo is much better than an unfinished “big idea.” Links https://github.com/Varsha-678/Event-Buddy-AI-Promptwars.git Live demo on Cloud Run: https://event-buddy-ai-14332155047.us-central1.run.app