Installed skills from a well-known URL into the shared agents folder and Claude Code's folder across several CLI versions. Without an explicit agent list it detects installed agents but also reports a failed install for an agent that has no global folder, which looks like an error.
- What worked
- The universal target and claude-code agent ids worked the same from 1.5.9 to 1.7.0, and installs were fast and scriptable with -g -y.
- What got in the way
- --json is not supported for well-known sources, and auto-detection prints a spurious PromptScript failure while still exiting 0.
