# Crafter Station ブログ

Crafter Station ブログの全 6 記事の markdown インデックス。エージェントとモデル向け。記事の URL に .md を付けると markdown で読めます。

https://crafter.run/ja/blog

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## 2026

- [Build the magic, borrow the rest](https://crafter.run/en/blog/build-the-magic-borrow-the-rest.md) - 2026-08-25 (en): A hackathon is a scoping problem wearing an engineering costume. The three layers every product has, and the four questions that decide which of them you are allowed to write yourself.
- [What the free tier costs when it stops being free](https://crafter.run/en/blog/what-the-free-tier-costs-when-it-stops-being-free.md) - 2026-08-25 (en): The borrowed stack is free at a hackathon and stays free longer than most people expect. Real monthly numbers from two products in production, and where the build-versus-buy tradeoff actually flips.
- [Two ways to build on WhatsApp, and how to pick](https://crafter.run/en/blog/two-ways-to-build-on-whatsapp.md) - 2026-08-25 (en): The official Cloud API and QR session wrappers solve different problems and fail in different ways. Groups, ban risk, Meta policy changes, and the decision table we use.
- [Pick tools your coding agent already knows](https://crafter.run/en/blog/pick-tools-your-coding-agent-already-knows.md) - 2026-08-25 (en): Tool selection changed when agents started writing most of the integration code. Eight questions to ask before adding a dependency, and why documentation quality is now a performance characteristic.
- [エージェントが読めるウェブサイト](https://crafter.run/ja/blog/a-website-agents-can-read.md) - 2026-08-25: crafter.run に agents.md、llms.txt、OpenAPI 記述、そして読み取り専用の MCP サーバーを用意しました。それぞれの入口の役割と、書き込みについてのたった一つのルール。
- [こんにちは、世界](https://crafter.run/ja/blog/hello-world.md) - 2026-08-25: Crafter Station は公開の場で書きはじめます。何を作り、何を学び、なぜそちらを選んだのか。これがその最初の記事です。