12/ Use --bare to Speed Up SDK Startup by Up to 10x

When this pattern helps

Use this as a pattern to evaluate, not a universal rule. Check the current Claude Code documentation and your own workflow constraints, then keep the parts that measurably improve reliability, clarity, or delivery time.

这是一种值得评估的实践，不是放之四海皆准的规则。结合当前 Claude Code 文档和自己的工作约束验证，只保留确实改善可靠性、清晰度或交付时间的部分。

By default, when you run claude -p (or the TypeScript or Python SDKs), Claude searches for local CLAUDE.md's, settings, and MCPs. But for non-interactive usage, most of the time you want to explicitly specify what to load via --system-prompt, --mcp-config, --settings, etc.

This was a design oversight when the SDK was first built
In a future version, they will flip the default to --bare
For now, opt in with the flag to get up to 10x faster startup

claude -p "summarize this codebase" \
    --output-format=stream-json \
    --verbose \
    --bare

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