Skillbox is a skill library manager that centralizes AI coding skills from GitHub, GitLab, and local machines into one workspace. It lets developers activate specific skills per project and sync them to tools like Cursor and Claude Code. Skillbox tracks skill versions, flags updates, and lets users review changes before applying them. Teams can share curated skill collections through shared workspaces, and a built-in security scanner checks new skill versions for prompt injection and other risks before they reach connected machines.