Install And Update Skills

Use this for installing and updating Agent Skills through npx skills.

Operation Routing

For an install or add request, read Install Operation before acting.
For an update, upgrade, refresh, or check-only request, read Update Operation before acting.
When the user explicitly requests both operations, read both operation references and apply each selected workflow.
After a selected install or update command fails, read Cache-Corruption Retry only when its output confirms local npm cache corruption. Do not load or apply that reference for normal runs or unrelated failures.

Resolve global or project scope for every selected operation before mutation. If any selected operation's scope remains ambiguous, ask one direct question.
Preserve unrelated local skill files and lock mismatches. Report them instead of rewriting around them.