What
Plugins are add-ons that extend Claude Code. The list of reasons a plugin install or update can fail has five new entries:
directory_unavailabledirectory_identity_changeddirectory_binding_unreadabledirectory_commit_mismatchdirectory_listing_not_installable
A new check runs when a plugin is updated. If the check rejects the update, the update fails with directory_commit_mismatch.
Why
If a plugin update fails, one of these codes may now be the reason given, and the code names the specific problem that stopped it.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
The finding does not say what a plugin's directory binding is or what makes the new check reject an update.