Skill Creator v2.0 (released 2026-09-14, currently 2.0.1) is a rewrite. The 1.x series was a CLI plus a Claude Code subagent; the 2.0 line is a local-first agent skill workbench: the Workspaces, Creator, and Repository apps handle skill management, authoring, and pinned-commit installation. Model configuration is rebuilt as route tabs (one-click connectivity tests across nine protocols), the agent panel is redesigned (context meter, /compact, $ completion, 320-720px resizing), and attachment buttons wake the OS-native file dialog, with 2.0.1 fixing the macOS dialog that never opened. Breaking changes: persisted state is not migrated (back up ~/.skill-creator first) and Node.js minimum is 24.0.0.
