cover-designer

name	cover-designer
description	Generate a complete book cover set (ebook, print, audiobook, social) with a rich visual brief
author	AuthorAgent
version	1.0.0
triggers	["design my cover","make a book cover","generate book cover","cover for my book","create cover art","cover set","book cover variants","audiobook cover","kindle cover"]
permissions	["file_write","image_generation"]

Cover Designer

Generate a coordinated set of book covers in the standard sizes an author needs to ship across every retail platform — all from one visual brief, so the ebook, print, audiobook, and social-banner versions look cohesive.

Sizes produced

Variant	Dimensions	What it's for
Ebook	1024×1536 (2:3)	Amazon Kindle / KDP listings, BookBub thumbnails, Goodreads
Print	1024×1536 (2:3)	Front cover for paperback / hardcover (6×9 trim). Spine + back wrap added separately in your designer.
Audiobook	1024×1024 (1:1)	ACX / Findaway / Spotify. Upscale to 2400×2400 before submitting.
Social	1536×1024 (3:2)	Twitter / X cards, Facebook OG, BookBub feature graphics, newsletter headers

How the AI brief works

Every cover gets the same set of fields, but the AI lays out for the target aspect (vertical for ebook/print, square for audiobook, landscape for social).

Required:

• title — the book title
• author — pen name (auto-pulled from linked persona if available)
• genre — primary genre (romance / fantasy / sci-fi / thriller / mystery / horror / literary / YA / nonfiction / memoir / children)
• description — what the book is about (the AI captures the feeling, not the literal scene)

Optional richness (use as many as fit your project):

• subgenre — e.g., "dark academia", "cosy mystery", "epic fantasy"
• mood — e.g., "tense, claustrophobic", "warm, hopeful"
• era — e.g., "1920s Vienna", "near-future", "Regency"
• setting — e.g., "ancient library at midnight", "remote Scottish cottage"
• keyImagery — array of visual elements you want featured (e.g., ["a burning compass", "raven feathers"])
• palette — color direction (e.g., "deep blue and gold", "blood red on charcoal")
• avoidImagery — what to keep OUT (e.g., "no faces, no weapons, no skulls")
• style — realistic | illustrated | minimalist (default: illustrated)

Provider preference

By default uses OpenAI's gpt-image-1 (best for book covers per author testing). Falls back to Together AI Flux if no OpenAI key is configured. Override with provider: 'together' | 'openai' | 'auto'.

Quality vs. cost

quality: 'high' | 'medium' | 'low' | 'auto' (default 'high' for covers). Full set at high quality: ~$0.92. At medium: ~$0.46. At low: ~$0.23.

Triggering this skill

Say things like:

• "Design a cover set for my project"
• "Make me a book cover"
• "Generate cover variants for [title]"
• "I need an audiobook cover"

The AI will gather the brief from your project metadata, ask clarifying questions for any missing rich fields, then call /api/projects/:id/cover-set and surface the generated images in the dashboard's Library panel.

Title + author rendering

Text is rendered ON the cover by default. gpt-image-1 produces sharp, genre-appropriate typography for book covers, so authors usually want a finished cover they can list with — not a base image they have to typeset.

For ebook + print variants the title appears prominently (top half) and the author name smaller near the bottom. Audiobook squares and social banners are still rendered without on-image text because those formats are typically re-typeset by the platform / overlay tool.

Override defaults:

• includeText: false → clean image, no on-cover text. Use this when you want to drop the image into your own designer (Canva, Photoshop, KDP Cover Creator, BookBrush, etc.) and add typography yourself.
• typographyNote: "..." → steer typography style. e.g., "hand-lettered serif, gold foil effect" or "bold sans-serif, all caps".

Other important rules

• The AI brief is a feeling, not a literal scene. Saying "the sphere is glowing on the altar" works better than "exact angle showing the sphere".
• Even with text rendering on, double-check letterforms — sometimes the model produces near-misses. If a letter looks off, regenerate or set includeText: false and typeset in post.

Where to expand

If you want a richer cover-prompt library (per-genre prompt templates, trending-cover analysis, comp-cover matching), look at the Writing Secrets Ko-Fi store — that's where the more specialized cover tooling lives.