What probably matters to youSection of the release
Unclear It is not clear whether this list grants plugins these abilities, sets permissions for them, or does something else.
What
Plugins are add-on packages that extend Claude Code. The plugin runtime keeps a list of entries that includes tool.register, tool.list, tool.check and plugin.register. That list now also includes:
Going by their names, these entries would let plugin code write messages and read or set environment variables, which are named settings passed to running programs.
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 is not clear whether this list grants plugins these abilities, sets permissions for them, or does something else.
Anthropic's release notes agreeFixed mods' hooks being handed values with __proto__ keys silently removed, which could skip a tool.check guard on a tool call another mod…
