From holocron
Generate book cover art prompts for image generation models. Reads project content and produces optimized prompts for Kindle-dimension covers.
How this skill is triggered — by the user, by Claude, or both
Slash command
/holocron:coverThe summary Claude sees in its skill listing — used to decide when to auto-load this skill
Generate cover art prompts for your book using the cover-artist agent.
Generate cover art prompts for your book using the cover-artist agent.
/holocron:cover # Generate cover prompts for current project
/holocron:cover /path/to/project # Generate for specific project
You'll be asked whether to include text:
For each concept, you'll receive:
Use the motif CLI to generate cover images directly:
motif "your prompt here" --cover # Kindle cover: 2:3, 2K
motif "your prompt here" --cover -m gpt # GPT model (best for covers)
motif "your prompt here" --cover --dry-run # Preview cost first
For illustrated books: After generating your cover, use /holocron:illustrate to create a motif series from the cover and generate consistent chapter illustrations in the same style.
Prompts are optimized for:
--cover flagThe agent prioritizes:
If you chose image-only:
If you chose text-inclusive:
npx claudepluginhub petitchu/holocron --plugin holocronCreates, edits, and optimizes skills for Claude Code, including drafting, evaluating with test prompts, iterating on performance, and improving skill descriptions for better triggering accuracy.