Nothing to try yetTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
PluginsArea: what it touches
In DevelopmentKind: in v2.1.282,
In DevelopmentSection of the release
Unclear It cannot be fully ruled out that the new warning is reachable in some case.
What
Claude Code now contains a warning for entries in extraKnownMarketplaces (the setting that registers extra plugin marketplaces) whose name reads like an official Anthropic or Claude marketplace. That path would ignore the entry but keep it in your settings file and ask you to rename or delete it.
In this build that path cannot run. Such entries still go through the existing path, which reports that an invalid marketplace entry was ignored.
Why
This prepares for blocking marketplaces that pose as official ones, but nothing changes for you yet.
The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.
Added sinceA small documentation edit on Troubleshoot plugins touched a line naming extraKnownMarketplaces after this was published.If a settings file declares the marketplace under [`extraKnownMarketplaces`](/docs/en/settings-reference#extraknownmarketplaces), Claude Code's attempt to add it at startup fails the same way, and the message appears on the **Errors** tab …plugins/troubleshootingsee the edit
Confirmed sinceAnthropic's documentation has since written up extraKnownMarketplaces, on Roll out a plugin to your whole organization.| What you set | An availability for each plugin, such as **Installed by default** or **Required** | `extraKnownMarketplaces` to register your marketplace and `enabledPlugins` to install plugins from it |plugins/org-rolloutsee the edit
How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtIt cannot be fully ruled out that the new warning is reachable in some case.
Anthropic's documentation agreesAnthropic's documentation has since written up extraKnownMarketplaces, on Roll out a plugin to your whole organization.
