Building Impromptu - Kiro Hackathon

Siddhartha Sen — Mon, 15 Sep 2025 14:10:49 +0000

From Idea to Production in Days
When I heard about the Kiro hackathon, I had a simple idea: what if Pictionary, but with AI? That spark became Impromptu - a multiplayer game where players create prompts, AI generates images, and everyone guesses the original words.

The Kiro Difference
What blew me away wasn't just Kiro's code generation - it was the steering system. Before writing a single line, I created 9 guidance files covering everything from security to game balance. These became my development compass.

Every conversation with Kiro followed these principles automatically. No more "oops, forgot input validation" or inconsistent patterns. The AI didn't just write code; it became my development partner with shared standards.

What I Built
Full-stack multiplayer game with real-time Socket.io communication
Multi-provider AI integration (Together.ai, Replicate, OpenAI) with 80% cost savings
Smart scoring system using string similarity and semantic analysis
Complete testing suite with 95% coverage and CI/CD pipeline
Production deployment on Railway with custom domain

The Real Win
The game itself is fun (try it at https://imprompt.to/), but the real victory was discovering a new way to work with AI. Instead of generating code and hoping for the best, Kiro taught me to establish intelligent guardrails first.

The result? Production-ready code from day one. No technical debt. No "we'll fix it later" moments.

Lessons Learned
Kiro changed how I think about AI development. It's not about replacing developers - it's about amplifying our ability to maintain excellence at scale. The steering system ensures every generated line follows established patterns and principles.

That mindset shift from "Can AI write this?" to "How can AI help me build better?" - that's the real game-changer.

(For any comments and/or questions, you can reach out to me by replying to this post!)

DEV Community: Siddhartha Sen

Building Impromptu - Kiro Hackathon