Unclear It is not clear what feature reads this setting or what being off changes.
What
When CLAUDE_CODE_SYNC_SKILLS or CLAUDE_CODE_SYNC_SESSION_REFS is set, and a skill has a matching entry among its scoped settings, Claude Code now treats that setting as off when nothing else decides it. Before, it was left unset. These are environment variables, settings you put in your shell before starting Claude Code.
Why
This changes the default for skill sync when either variable is on.
Names in the bundleCLAUDE_CODE_SYNC_SKILLSCLAUDE_CODE_SYNC_SESSION_REFS
Documented inclaude-code/skills
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
It is not clear what feature reads this setting or what being off changes.