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Gallery/第4回 Agentic AI Hackathon with Google Cloud/COCO
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Encouragement Award — 第4回 Agentic AI Hackathon with Google Cloud 2026

COCO

An AI partner for finding things around the house. It watches the room at intervals, keeping a log of footage, so asked where the keys are it reports not just a place but a state, such as hidden under a magazine. If they are absent, it reasons from calendar entries to suggest candidates, and turns its camera with a servo.

Event
第4回 Agentic AI Hackathon with Google Cloud
Organizer
Zenn (Classmethod) / Google Cloud Japan
Year
2026
Region
Japan
Prize
Encouragement Award
Tech
Google CloudVertex AIVertex AI Agent EngineGeminiGemini 2.5 Pro TTSADK (Agent Development Kit)Model Context Protocol (MCP)Cloud FunctionsFirestoreCloud StorageEventarcFirebase HostingNext.jsobniz

From the organizer's citation (summary)

Judges noted it tackles misplaced belongings with an AI approach unlike existing trackers, and called the agent-to-agent communication design and inference from footage logs and activity history technically interesting, with high completeness.
A summary of the commentary the organizer published. See the source for the original wording. Zenn (Classmethod) official results

Why It Won — our reading

Finding lost things has mostly meant tagging whatever you expect to lose. This project stands on the other side and watches the room, so it also reaches objects nobody thought to tag; the shift in premise is doing real work. Reasoning from calendar entries when something is simply not in the footage patches the obvious weakness of a camera-based approach. Pulling software and hardware, down to a camera that turns itself, into one experience likely helped the demo land.

This is our own analysis based on the official announcement and the project's own materials. It is not the organizer's stated reasoning.
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See all winners of 第4回 Agentic AI Hackathon with Google Cloud →

Winners using the same tech

Check the original

The links below lead to external sites.

Summaries are written by this site. Project pages include demo videos, screenshots and the team's own write-up (videos may autoplay).