The /code-review and /simplify slash commands now carry disableModelInvocation: true in their skill definition. Previously, Claude's main model re-processed the command after the skill loaded, which was redundant because both skills immediately hand off to an embedded multi-agent workflow. With this flag set, the skill executes its own agentic logic directly without an extra round-trip through the main model. Users should notice no behavioral change, but the commands may start slightly faster and consume fewer tokens on the initial dispatch.
Evidence
disableModelInvocation: !0 added to both skill objects (search for "disableModelInvocation" near the /simplify and /code-review command definitions)
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's release notes agreeClaude no longer runs the /verify and /code-review skills on its own; invoke them with /verify or /code-review when you want them