Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
SkillsArea: what it touches
Internal ChangesKind: in v2.1.323,
Internal ChangesSection of the release
What
Skills are packaged instruction sets for particular tasks, and Claude uses the Skill tool to run them. That tool's definition now includes a registryToolId field. The field holds a fixed identifier that is the same for everyone.
The description Claude reads to learn what the Skill tool does was also reworded in this release.
Why
The Skill tool now has a stable ID. A tool registry, a shared catalogue of tools, can use that ID to look it up.
