Unclear What Claude Code does differently when the field is set is not known.
What
CLAUDE_CODE_PLUGIN_ATTRIBUTION is an environment variable, a setting passed to Claude Code from outside, that describes where plugins came from.
givesWayToOfficialInstall: a new field that entries inCLAUDE_CODE_PLUGIN_ATTRIBUTIONcan set. A sidecar file, a separate file stored beside the plugin, may not set it, and the log says so if one tries.- Allowlist:
CLAUDE_CODE_PLUGIN_ATTRIBUTIONwas added to the list of environment variable names kept with the Desktop skills and connector variables.
Why
Whoever installs a plugin can mark it as giving way to the official install of that plugin. Only the environment variable can set this mark, not a file shipped next to the plugin.
Names in the bundleCLAUDE_CODE_PLUGIN_ATTRIBUTIONgivesWayToOfficialInstall
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
What Claude Code does differently when the field is set is not known.