Skills can be named with a scope like apps/web:deploy, and coordinator use is read-only.
What's wrong with this entry?
The Skill tool's description was rewritten: background skills return only an agent name, skills can be named with a scope such as apps/web:deploy, and an already-loaded skill block should be followed rather than invoked again. In coordinator mode an extra paragraph is appended saying the coordinator's own use is read-only, with no forking, permission grants, hooks or preamble shell commands, and that execution happens in workers.
- The addendum requires
CLAUDE_CODE_COORDINATOR_MODE, and locally also a remote or cowork context; without those the base description is used.
In a coordinator session, the coordinator's own use of this tool is read-only
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
Related
Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.