extension-create

Extension-create scaffolds Claude Code extensions by generating properly structured files for slash commands, subagents/workflows, or agent skills. It applies a decision framework to select the right extension type based on your requirements, then outputs templates with frontmatter following your project's conventions, placed in `.claude/commands/`, `.claude/subagents/`, or `.claude/skills/`.

Slash commands are simple, single-action extensions invoked directly. Subagents and workflows handle complex, multi-step processes with autonomous reasoning. Agent skills are reusable capabilities that extend Claude Code's functionality. Extension-create determines which fits your use case based on initiation method, context requirements, verbosity needs, and resource constraints.

Extension-create supports both project-scoped and personal extensions. It guides you to decide the appropriate scope during creation—project extensions are shared and placed under your repository's `.claude/` directory, while personal extensions are stored in your user workspace for solo use.

Extension-create generates templates automatically following Claude Code format conventions and best practices. If your project has existing extension templates, it applies those patterns for consistency; otherwise, it provides default well-formed structures for commands, workflows, and skills that work out of the box.

Scaffolding produces complete, ready-to-use extension files with frontmatter and structure. You'll typically add your custom logic and parameters next, then test the extension within Claude Code. Extension-create handles the boilerplate so you focus on implementation.

Yes. Extension-create's decision framework evaluates your requirements—initiation method, context needs, verbosity, and resources—to recommend whether a slash command, workflow, or skill best solves your problem, then scaffolds the appropriate type.