CLAUDE CODE · N8N · AI AUTOMATION
Automate the boring parts.
Ship the AI tool you keep putting off.
Small AI systems, built to be used.
I'm Kei Okutani, an AI engineer based in Japan. I build Claude Code agents, n8n workflows and small custom AI tools. Scope and price are agreed in writing first, the build is tested on your real workflow, and you get it with handover notes.
English or Japanese · Japan time (UTC+9), async-friendly · Free 30-minute call to scope it
TYPICAL STACK
- Claude Codeagents, scripts, refactors
- n8n · Make · Zapierworkflow automation
- Claude / OpenAI APIsclassify, extract, draft
- Cloudflare Workers · Vercelsmall, cheap hosting
- LINE · Gmail · Sheetswhere the work already is
SERVICES
What I can build for you.
Most projects start with one annoying, repeated task. We pick the smallest version that saves real time, build it, and extend only if it earns its keep.
Claude Code agents & scripts
Repo automation, data clean-up scripts, internal CLIs, and agent setups (CLAUDE.md, hooks, MCP servers) that your team can keep running without me.
n8n / Make / Zapier workflows
Form → CRM, email → spreadsheet, invoice → accounting. Self-hosted n8n or your existing SaaS, with error alerts so failures don't go silent.
AI inbox & chat intake
Incoming email or chat is sorted by AI, routine replies are drafted, and anything about price, contracts or judgment waits for a human to approve.
Japan-market integrations
Entering Japan? LINE Official Account bots, Japanese-language AI replies and business-Japanese copy, built by a native speaker who also writes the code.
BUILT AND RUNNING
Things I've shipped for my own business first.
I build on myself before I build for clients. These run in daily use at Nyurano Works today.
AI email intake
Every message to our inbox is classified by Claude. Routine ones get an acknowledgement; the rest become drafts I approve from my phone.
Navi, a LINE assistant
Takes inquiries on LINE (Japan's main messaging app) and prepares replies that are sent only after human approval.
Form autofill extension
A Chrome extension, written with Claude Code, that fills dozens of different registration forms from one profile kept only in the browser.
Honest note: these are in-house systems. I don't have paid client results to publish yet, so I show the actual builds instead, including in the videos below.
VIDEOS
Watch me build it first.
An English YouTube channel with real builds, not demos. If a video solves your problem, you already know how I work before we talk.
Claude Code & n8n, start to finish
One real automation per episode, including the parts that broke.
Japan's AI business news, in English
What Japanese companies are actually doing with AI, explained in about five minutes.
Global hackathons, solo
What I built, what the judges saw, and what I'd do differently.
The channel launches in November 2026. Links will appear here.
HOW IT WORKS
No surprises on scope or price.
Send a short brief
What you do today, where it hurts, and the tools involved. A few lines is enough.
Free 30-minute call
Zoom or Google Meet. We find the smallest version worth building.
Written quote
Scope, price and payment date are agreed in writing before any work starts.
Build & hand over
Tested on your real workflow, delivered with setup and operating notes.
FAQ
Common questions.
Do you work with clients outside Japan?
Yes. Everything is done remotely in English. I'm on Japan time (UTC+9), which overlaps with mornings in Asia-Pacific and evenings in Europe and the US. Most work runs async.
How do payments work?
The currency (USD or JPY), payment method and due date are written into the quote before work starts. If you prefer working through a platform, we can contract via Freelancer.com.
Can you sign an NDA or work in our accounts?
Yes. I can sign your NDA, and I prefer working in accounts you own so you keep full control after handover. Please don't send confidential data in the first message.
What if the project is too big or not a good fit?
I'll say so on the call, and suggest a smaller first step or an existing tool that already does the job.
LET'S TALK
Tell me what you want automated.
Use the form or email [email protected]. I read every message myself and reply by email.