CLAUDE_CODE_SYNC_SKILLS

Updated October 13, 2026 by Alex Sorokoletov

CLAUDE_CODE_SYNC_SKILLS is a Claude Code environment variable. Added between v2.1.143 and v2.1.212 and still present in v2.1.294. It is listed in the official reference.

Status	Present in v2.1.294
Added	Added between v2.1.143 and v2.1.212
Category	Plugins and skills
Official docs	Listed

How to set it

For one session, export it in the shell that starts Claude Code:

export CLAUDE_CODE_SYNC_SKILLS=<value>
claude

To apply it to every session, add it to the env object of a settings file:

// ~/.claude/settings.json
{
  "env": {
    "CLAUDE_CODE_SYNC_SKILLS": "<value>"
  }
}

Release notes that mention it

Related variables

CLAUDE_CODE_CCR_EARLY_SKILLS_SYNC
CLAUDE_CODE_DISABLE_BUNDLED_SKILLS
CLAUDE_CODE_DISABLE_POLICY_SKILLS: Disables policy-enforced skills.
CLAUDE_CODE_SYNC_PLUGIN_INSTALL: Install plugins synchronously (block until done).
CLAUDE_CODE_CCR_EARLY_PLUGINS_SYNC
CLAUDE_CODE_INVOKED_SKILLS
CLAUDE_CODE_SYNC_PLUGINS
CLAUDE_CODE_SYNC_PLUGINS_BUFFERED_DOWNLOAD

Frequently asked questions

Which Claude Code version has CLAUDE_CODE_SYNC_SKILLS?

Added between v2.1.143 and v2.1.212 and still present in v2.1.294.

How do I set CLAUDE_CODE_SYNC_SKILLS?

Export it before starting Claude Code (export CLAUDE_CODE_SYNC_SKILLS=value), or add it to the "env" object in ~/.claude/settings.json to apply it to every session.

All variables, searchable: Claude Code environment variables.