Plugin Dev

Claude Code: /plugin marketplace add anthropics/claude-plugins-official → /plugin install plugin-dev@claude-plugins-official

A plugin bundles several different extension points, and each has its own conventions — a hook that blocks the wrong event, a command with an ambiguous name and a subagent with an over-broad brief all fail differently. This toolkit covers them separately and adds validation, so a plugin can be checked before it is published rather than after someone installs it.