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Kenta Yamamoto, Chief Innovation Officer and Co-Founder at primeNumber, has an engineering background but no time to write code as a business lead. He went all in on Claude Code sub-agents for 30 days and found the real unlock wasn't the agent, it was the data layer feeding it. He shares an Orchestrator + Sub-agent pattern that scales beyond coding, plus an honest log of wins and misses.

Demos and office hours run all day. Drop by for a demo between sessions. Sign up in advance for office hours. All times in Japan Standard Time (JST).

A note on language. Sessions run primarily in English with some in Japanese (marked on the agenda), and live simultaneous interpretation is available in both directions throughout the event. Office hours are held in English.

08:30 – 09:30
Check-in and breakfast
09:30 – 09:45
Community general session
·
(Founder stage)
·
Boris Cherny
Anthropic
10:00 – 10:30
Building AI-native across industries with NTT, Mizuho and Mercari
·
(
Founder stage
)
·
Carlos Donderis
Mercari
Takashi Ebihara
NTT Inc
Tatsuto Fujii
Mizuho Financial Group, Inc.
What happens when domain experts can finally build
·
(
Builder stage
)
·
Jason Tangen
University of Queensland
10:00 – 10:45
How we Claude Code
·
(
Workshop
)
·
Jason Schwartz
Anthropic
10:45 – 11:15
From Claude prototype to production: How Myrealtrip builds and ships AI workflows
·
(
Founder stage
)
·
Wonjin Hur
Myrealtrip
Code for loved ones: Building customized software to bypass language barriers with my girlfriend
·
(
Builder stage
)
·
Siyuan Yan (Matt)
Kyushu University
11:00 – 11:45
Ship your first Managed Agent
·
(
Workshop
)
·
Koki Yoshida
Anthropic
11:30 – 12:00
The 1% problem: How domain expertise + Claude let a 2-person team hit #1 on a global classification benchmark
·
(
Founder stage
)
·
Gahee Seo
Federation
How to integrate Claude into your daily life
·
(
Builder stage
 // presented in Japanese
)
·
Yuta Hayashi
Determinant, Inc.
12:00 – 12:45
Agents that remember
·
(
Workshop
)
·
Sam Jiang
Anthropic
11:45 – 13:30
Lunch
13:00 – 13:45
Evals for taste: Hill-climbing a slide-generation agent
·
(
Workshop
)
·
Jonah Dueck
Anthropic
13:15 – 13:45
The last mile is the spec
·
(
Founder stage
 // presented in Japanese
)
·
Hitoshi Tsuyuki
Tsukumo Labs Inc.
Sumiki Hori
Tsukumo Labs Inc.
Same model, three different worlds: Japan, India, Australia
·
(
Builder stage
)
·
Jason Bigman
Anthropic
Rye Smith
Spruik Co.
Sumeet Doshi
HaemoLink
Yuta Hayashi
Determinant, Inc.
14:00 – 14:30
Code less, query more with sub-agents and data
·
(
Founder stage
 // presented in Japanese
)
·
Kenta Yamamoto
primeNumber Inc.
How I built a legal platform for 280 million people at the Claude Code Hackathon
·
(
Builder stage
)
·
Ilham Firdausi Putra
Pasal.id
14:00 – 14:45
Tool, skill, or subagent? Decomposing an agent that outgrew its prompt
·
(
Workshop
)
·
Karan Sampath
Anthropic
14:45 – 15:15
Manager 11: How I finally shipped my dream football management game with Claude
·
(
Founder stage
)
·
Rye Smith
Spruik Co.
How I shipped a life-saving app with Claude Code
·
(
Builder stage
)
·
Sumeet Doshi
HaemoLink
15:00 – 15:45
Agent Battle: Mine the most diamonds in 45 minutes
·
(
Workshop
)
·
Liam Plambeck
Anthropic
15:30 – 16:00
Rewriting Bun in Rust
·
(
Founder stage
)
·
Jarred Sumner
Anthropic
15:45 – 18:00
Closing reception

Keynotes, demos, and conversations with the teams behind Claude. Recorded at Code w/ Claude 2026 Tokyo and ready to replay.

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