Official best practices for using Claude Opus 4.7 with Claude Code

官方发布的 Claude Opus 4.7 与 Claude Code 搭配使用时的最佳实践，尤其是在高效使用和优化表现上的建议。

Anthropic shared guidance for Claude Opus 4.7 in Claude Code: the default Effort level is now xhigh, and users should provide goals, constraints, and acceptance criteria upfront. The post lists five Effort tiers—low, medium, high, xhigh, and max—with xhigh recommended for most coding, API design, migration, and code review tasks. The key shift is behavior: adaptive thinking is built in, while tool use and SubAgent spawning are less frequent by default, so prompts should state those needs explicitly.

Why it matters: This is not a model launch, but an official Anthropic workflow note that changes day-to-day Claude Code usage: default effort, 5 levels, and fewer tool/SubAgent calls unless asked. HKR-H/K/R all pass, but the scope is narrower than a major product release.