Looking at the source, this appears to be a placeholder or minimal skill definition without implementation details. The name suggests it's meant to help with creating epic-level design documentation or planning, but there's no actual code or functionality visible in the provided materials. If you're hoping to use this for generating design specs, system architecture docs, or user story epics, you'll want to check if there's more to it than what's shown here. As it stands, this looks like a stub that either needs development or is missing its actual implementation files.
npx skills add https://github.com/alirezarezvani/claude-skills --skill epic-design