You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
SkillsArea: what it touches
ImprovementsKind: in v2.1.311,
ImprovementsSection of the release
What
Skills are packaged instructions Claude can call by name. When Claude calls a skill by a name that matches one in its list but cannot be invoked directly, it now gets an "Unknown skill" error that ends with "Did you mean" and the skill's full name, followed by "Invoke it by that full name."
The check Claude Code runs before a skill starts can also now be cancelled partway through, including the steps that load the skill.
Why
Claude can recover on its own when it uses a short or wrong skill name, instead of stopping at a bare error. Cancelling now also stops a skill that is still loading.