Topic
claude code
5 posts · 5 articles
Articles
FixMay 23, 2026·4 min
Cut your Claude Code cost in half with one routing rule
Most of a Claude Code bill is Opus doing work Sonnet handles fine. Here is the routing rule that fixes it, plus how to confirm caching works.
TutorialMay 23, 2026·6 min
Get Claude Code to write tests you'll keep
Claude Code writes tests that pass without checking anything. Write them before the code, lock the assertions, and keep the tests worth running.
BasicsMay 23, 2026·5 min
Claude Code sub-agents: when to spawn one (3 cases)
A sub-agent runs in its own context window and hands back a summary. Here is the one rule for when to spawn one, with three worked examples.
TutorialMay 23, 2026·4 min
Run two Claude Code sessions in one repo with worktrees
Claude Code has a native -w flag for git worktrees. Run a refactor and a feature in parallel, each in its own files, with no merge pain.
TutorialMay 22, 2026·6 min
How to write a CLAUDE.md that changes Claude Code's behavior
The five sections that shift how Claude Code works in your repo, plus what to leave out so the file stays under 200 lines.