Generate book cover art prompts for image generation models. Reads project content and produces optimized prompts for Kindle-dimension covers.
View on GitHubhowells/fiction
fiction
skills/cover/SKILL.md
January 25, 2026
Select agents to install to:
npx add-skill https://github.com/howells/fiction/blob/main/skills/cover/SKILL.md -a claude-code --skill coverInstallation paths:
.claude/skills/cover/Generate cover art prompts for your book using the cover-artist agent. ## What This Does 1. Asks whether you want image-only or text-inclusive covers 2. Reads your project materials (README, themes, characters, world, tone) 3. Synthesizes the story's visual essence 4. Produces 3-5 distinct cover concepts as image generation prompts 5. Optimizes for Kindle dimensions (2560 x 1600, aspect ratio 1.6:1) ## Usage ``` /fiction:cover # Generate cover prompts for current project /fiction:cover /path/to/project # Generate for specific project ``` ## Text Options You'll be asked whether to include text: - **Image only** (recommended) — Clean image with negative space for title overlay in post-production. More control over typography. - **Include text** — Title and author name generated as part of the image. Works well with GPT Image 1.5 and Gemini 3 Pro. ## Output For each concept, you'll receive: - **Approach** — The visual strategy - **Prompt** — Ready to paste into Midjourney, DALL-E, or other generators - **Why it works** — Genre signals and design rationale - **Variations** — Style/mood alternatives ## Generating Images Once you have prompts, you can generate images with any AI image tool. If you have [falcon](https://github.com/howells/falcon) installed, you can generate images directly from the command line: ```bash falcon "your prompt here" --ar 5:8 ``` ## Prompt Compatibility Prompts are optimized for: - **Midjourney V7** — Use `--ar 5:8` for Kindle proportions - **DALL-E 3** — Specify dimensions in prompt - **Stable Diffusion** — Works with standard prompt structure - **Other generators** — Adapt aspect ratio parameters as needed ## Design Philosophy The agent prioritizes: - **Symbolic over literal** — Evoke the feeling, don't illustrate the plot - **Cut-through** — Stand out in crowded genre thumbnails - **Genre signals** — Honor conventions while avoiding cliches - **Thumbnail test** — Readable at 80px width - **Title space** —