Unclear Whether installing plugins from npm is still possible some other way in this release is not clear.
What
Plugins are add-on packages for Claude Code. The plugin install command no longer handles these:
<package>@npmspecs, which installed a plugin from the npm package registry- the
--registry <url>option, which chose a different npm registry for such an install - the check that the
--registryvalue is an http or https address
Install can also now stop with a new failure code, engine_range, and can report a failure code of builtin or directory_loaded.
Why
If you installed plugins from npm, or pointed install at your own npm registry with --registry, that no longer works through this install command.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
Whether installing plugins from npm is still possible some other way in this release is not clear.