You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
PluginsArea: what it touches
ImprovementsKind: in v2.1.284,
ImprovementsSection of the release
What
A plugin's manifest is the file that describes the plugin to Claude Code. When a plugin fails to load because of this file, the error now says which kind of problem it was, instead of being a generic error:
The file could not be read at all: the error includes what went wrong while reading it.
The file was read but broke the rules: the error names the manifest's path and lists the problems. If there are many, it shows the first few and adds "and N more".
Why
The plugin error views, such as the one in /plugin, can point you at the exact problem in the manifest. You no longer have to guess from a general failure message.
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's release notes agreeFixed the /plugin configure screen: boolean options are now a true/false choice instead of free text, number options refuse invalid input…