CLAUDE_CODE_PLUGIN_ATTRIBUTION

Updated October 14, 2026 by Alex Sorokoletov

CLAUDE_CODE_PLUGIN_ATTRIBUTION is a Claude Code environment variable. Added between v2.1.245 and v2.1.247 and still present in v2.1.295. It is not in the official reference.

Status	Present in v2.1.295
Added	Added between v2.1.245 and v2.1.247
Category	Plugins and skills
Official docs	Not listed

How to set it

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

export CLAUDE_CODE_PLUGIN_ATTRIBUTION=<value>
claude

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

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

Related variables

CLAUDE_CODE_ENABLE_BACKGROUND_PLUGIN_REFRESH: Enables automatic background plugin refresh when the runtime detects updates are needed.
CLAUDE_CODE_PLUGIN_CACHE_DIR: Local cache directory for downloaded plugins.
CLAUDE_CODE_PLUGIN_DIR_WATCH
CLAUDE_CODE_PLUGIN_DIRS
CLAUDE_CODE_PLUGIN_KEEP_MARKETPLACE_ON_FAILURE: Preserves the local marketplace plugin cache when git pull fails.
CLAUDE_CODE_PLUGIN_PREFER_HTTPS: Force HTTPS for plugin source resolution.
CLAUDE_CODE_PLUGIN_SEED_DIR: Seed directory for pre-installed plugins.
CLAUDE_CODE_PLUGIN_USE_ZIP_CACHE: Use zip-based caching instead of git.

Frequently asked questions

Which Claude Code version has CLAUDE_CODE_PLUGIN_ATTRIBUTION?

Added between v2.1.245 and v2.1.247 and still present in v2.1.295.

How do I set CLAUDE_CODE_PLUGIN_ATTRIBUTION?

Export it before starting Claude Code (export CLAUDE_CODE_PLUGIN_ATTRIBUTION=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.