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#environment-variables

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Tutorials

CLAUDE_CODE_TMPDIR is ignored in project settings (2026)

Claude Code v2.1.251 stopped project settings setting CLAUDE_CODE_TMPDIR, CLAUDE_CONFIG_DIR, HOME, TMPDIR and the XDG family from a .claude/settings.json env block. Nothing errors. Here is the full ignore list, the four scopes it splits into, and the debug flag that shows you the drop.

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#environment-variables · AgentNotebook