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OKCoinJapan API Key Registration — A Gentle, Picture-Based Guide for First-Time Users
About This Article This article is a friendly, picture-based walkthrough for first-time OKCoinJapan (OKJ) users who are general investors wanting to issue their very first API key. It is aimed at people who want to link OKJ to a household-budget or asset-management app, or automatically record their balance — everyday “light automation”, no coding skills required. All screens reflect OKJ as of April 24, 2026. Disclaimer: This article shares the author’s personal registration and operating experience. It is not investment…
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What Is Crowdfunding? — A New Way to Raise Funds and How to Use It Well
Introduction When you want to launch a new product, start a service, or tackle a social issue, crowdfunding has become a popular alternative to bank loans and self-funding. It allows individuals and small businesses to raise money from many supporters via the internet, and the practice is now well established in Japan. This article summarizes the types of crowdfunding, major Japanese platforms, and practical tips for using it effectively, based on the situation as of April 2026. It draws on…
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A Practical Guide to Business Efficiency with Claude Code
With the rapid evolution of AI technology, leveraging AI tools in business has become essential. In this article, we introduce methods to improve business efficiency with Claude Code.
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How I Built an EML-to-PDF Converter in 1-2 Hours with Claude Code
A vendor only issued receipts via email, but our accounting software only accepts PDF. Using Claude Code, I built an EML-to-PDF converter in just 1-2 hours to comply with Japan’s Electronic Book Preservation Act.