Kiroween 2026 — Kiro AI Hackathon
About this event
Kiroween 2026 is Kiro's annual Halloween-themed online hackathon for building original software with Kiro, an AI-powered development environment. Developers can use Kiro agents, specs, hooks, steering, powers and MCP to create working apps and compete for $100,000 in cash prizes. Beginner-friendly; participate individually or in teams of up to 3, subject to regional eligibility rules. Only projects begun during the October 30–December 4 submission period qualify. Submissions require a working app, public GitHub repository with an open-source licence and /.kiro directory, and a public demonstration video under three minutes. Submission deadline: December 4, 2026 at 2:00 PM PST. Judging is December 16, 2026–January 29, 2027; winners expected around February 3, 2027. Organised by Kiro, managed on Devpost.