The new rules of context engineering for Claude 5 generation models | Claude by Anthropic

I’ve written previously about how to best prompt the newest generation of Claude 5 models and work with them iteratively to discover what you want to build. But when you send a message to Claude, the prompt is only a small part of the context it gets. Much of your context is assembled from your system prompt, Skills, CLAUDE.md files, memory, and other sources. We call this context engineering, and

[hhungry]

一時期話題になってたKarpathy氏のCLAUDE.mdのやつも要らない？

[fh477ehj8890]

あとで更新/した

[mkusaka]

Claude 5向けにClaude Codeのsystem promptを80%以上削減し、context engineeringの最適化手順を解説する。

[t-wada]

モデルの判断力向上により、Claude Codeのシステムプロンプトを性能を落とさず8割削減できた。判断はモデルに委ね、CLAUDE.md は軽量に保ち、詳細は Skill へ切り出して必要な時に必要なコンテクストを渡す