Book Cover Generation

Generate stunning book covers, ebook covers, and audiobook artwork using the each::sense API. Create genre-appropriate designs that capture your book’s essence and attract readers.

Overview

The each::sense API enables AI-powered book cover generation with support for:

• Fiction Covers: Thriller, romance, sci-fi, fantasy, literary fiction
• Non-Fiction Covers: Self-help, business, memoir, biography, history
• Ebook Covers: Digital-optimized designs for online marketplaces
• Audiobook Covers: Square format artwork for audio platforms
• Genre-Specific Styles: Designs that match reader expectations and market conventions
• Series Consistency: Maintain visual branding across book series

Quick Start

curl -X POST "https://sense.eachlabs.run/chat" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "message": "Create a book cover for a psychological thriller titled \"The Silent Witness\" by Sarah Mitchell. Dark, moody atmosphere with a shadowy figure standing at a window. Include space for the title at the top.",
    "mode": "max"
  }'

Book Cover Genres

Use Case Examples

Thriller/Mystery Cover

curl -X POST "https://sense.eachlabs.run/chat" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "message": "Design a book cover for a crime thriller called \"Dead End Road\". Show an abandoned car on a foggy rural road at night, headlights cutting through mist. Ominous atmosphere with dark blues and blacks. Leave clear space at the top third for the title text.",
    "mode": "max"
  }'

Romance Novel Cover

curl -X POST "https://sense.eachlabs.run/chat" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "message": "Create a contemporary romance book cover. A couple silhouetted against a sunset on a beach, warm golden and pink tones. Romantic and dreamy atmosphere. The composition should have open space at the top for the title and bottom for author name. Soft, painterly style.",
    "mode": "max"
  }'

Sci-Fi/Fantasy Cover

curl -X POST "https://sense.eachlabs.run/chat" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "message": "Generate an epic fantasy book cover showing a lone warrior standing on a cliff overlooking a vast magical kingdom with floating islands and a massive dragon silhouette in the stormy sky. Rich purples, deep blues, and golden highlights. Epic cinematic composition with title space at top.",
    "mode": "max"
  }'

Self-Help/Business Book

curl -X POST "https://sense.eachlabs.run/chat" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "message": "Design a minimalist self-help book cover. Abstract representation of personal growth - a small seedling transforming into a flourishing tree. Clean white background with teal and gold accents. Modern, professional aesthetic with plenty of negative space for large typography.",
    "mode": "max"
  }'

Memoir/Biography

curl -X POST "https://sense.eachlabs.run/chat" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "message": "Create a memoir book cover with a nostalgic, vintage feel. An old photograph-style image of a weathered wooden porch with a rocking chair, faded sepia tones blending into modern color. Evokes memory and reflection. Elegant, literary design with space for a centered title.",
    "mode": "max"
  }'

Children’s Book Cover

curl -X POST "https://sense.eachlabs.run/chat" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "message": "Design a colorful children's book cover featuring a brave little fox wearing a red scarf, exploring an enchanted forest with glowing mushrooms and friendly woodland creatures. Whimsical illustration style with bright, cheerful colors. Large clear area at top for playful title text.",
    "mode": "max"
  }'

Cookbook Cover

curl -X POST "https://sense.eachlabs.run/chat" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "message": "Create a cookbook cover with a rustic, appetizing aesthetic. A beautifully arranged overhead shot of fresh Mediterranean ingredients - olive oil, tomatoes, herbs, artisan bread on a worn wooden table. Warm, inviting lighting. Clean space at top for title and bottom for subtitle.",
    "mode": "max"
  }'

Poetry Collection

curl -X POST "https://sense.eachlabs.run/chat" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "message": "Design an artistic poetry book cover. Abstract watercolor imagery with flowing shapes suggesting nature and emotion - soft petals, flowing water, gentle gradients. Muted earth tones with touches of deep rose. Ethereal, contemplative mood. Minimalist composition with centered title area.",
    "mode": "max"
  }'

Audiobook Cover (Square Format)

curl -X POST "https://sense.eachlabs.run/chat" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "message": "Create a square audiobook cover for a historical fiction novel set in 1920s Paris. Show the Eiffel Tower at twilight with art deco styling, a mysterious woman in silhouette wearing a cloche hat. Rich golds, deep burgundy, and midnight blue. Bold, legible design that works at small sizes. Square 1:1 aspect ratio.",
    "mode": "max"
  }'

Ebook Series (Consistent Style)

Use session_id to maintain visual consistency across a book series:

# First book in series
curl -X POST "https://sense.eachlabs.run/chat" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "message": "Create the first book cover for a urban fantasy series. A city skyline at night with magical energy swirling through the streets, a hooded figure with glowing eyes. Dark purples and electric blues with neon accents. Consistent banner area at top for series branding and title.",
    "session_id": "fantasy-series-covers",
    "mode": "max"
  }'

# Second book - same session for consistency
curl -X POST "https://sense.eachlabs.run/chat" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "message": "Create the second book cover in the same urban fantasy series style. Same hooded figure now standing in an ancient underground chamber with mystical runes glowing on the walls. Maintain the same color palette of dark purples, electric blues, and neon accents. Same banner layout for series consistency.",
    "session_id": "fantasy-series-covers",
    "mode": "max"
  }'

Best Practices for Book Covers

Genre Conventions

Match reader expectations by following established genre visual language:

• Thriller readers expect dark, suspenseful imagery
• Romance readers look for emotional, intimate scenes
• Sci-fi readers expect futuristic or cosmic elements
• Business readers prefer clean, professional designs

Title Space Planning

Always specify clear areas for text placement:

• Reserve the top third for title
• Leave space at bottom for author name
• Consider spine area for print editions
• Avoid placing important imagery where text will overlay

Thumbnail Test

Design for multiple viewing sizes:

• Covers must be recognizable at small sizes (online stores)
• Use high contrast and bold elements
• Avoid fine details that disappear at thumbnail size
• Test legibility at various scales

Print vs Digital

Consider the final format:

• Print: Account for bleed, spine, back cover
• Ebook: Optimize for screen viewing
• Audiobook: Square format, works at very small sizes

Prompt Tips

Mood and Atmosphere

Be specific about the emotional tone:

• “Ominous and suspenseful” vs “dark and mysterious”
• “Warm and romantic” vs “passionate and intense”
• “Whimsical and playful” vs “magical and enchanting”

Typography Space

Always mention text placement needs:

• “Leave clear space at the top third for title text”
• “Negative space in upper area for large typography”
• “Composition should accommodate centered title and subtitle”

Genre Expectations

Reference genre-specific elements:

• “Classic thriller aesthetic with modern edge”
• “Contemporary romance cover style”
• “Epic fantasy in the tradition of major fantasy publishers”

Color Palette

Specify colors that work for your genre:

• Thrillers: Dark blues, blacks, deep reds
• Romance: Warm golds, pinks, soft pastels
• Sci-fi: Cool blues, purples, neon accents
• Self-help: Clean whites, inspiring colors, minimal palette

Mode Selection

Max Mode

Use "mode": "max" for:

• Final book covers
• Professional publishing quality
• Complex detailed scenes
• Print-ready artwork

Eco Mode

Use "mode": "eco" for:

• Quick concept exploration
• Testing different directions
• Draft iterations
• Budget-conscious projects

Multi-Turn Conversations

Use session_id to maintain context across requests:

# Initial cover concept
curl -X POST "https://sense.eachlabs.run/chat" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "message": "Create a book cover for a cozy mystery novel set in a small bookshop. Show a charming bookstore exterior at dusk with warm light glowing from windows, a cat sitting in the doorway, autumn leaves scattered on the cobblestone.",
    "session_id": "cozy-mystery-cover",
    "mode": "max"
  }'

# Request variation
curl -X POST "https://sense.eachlabs.run/chat" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "message": "Create another version with the same bookshop but from an interior perspective, looking out through the window at the evening street. Keep the cozy, inviting atmosphere and the cat somewhere in the scene.",
    "session_id": "cozy-mystery-cover",
    "mode": "max"
  }'

Error Handling

Handle common errors in your implementation:

# Check for API key
if [ -z "$EACHLABS_API_KEY" ]; then
  echo "Error: EACHLABS_API_KEY environment variable not set"
  exit 1
fi

# Make request with error handling
response=$(curl -s -w "\n%{http_code}" -X POST "https://sense.eachlabs.run/chat" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "message": "Create a minimalist book cover with abstract geometric shapes in blue and gold.",
    "mode": "max"
  }')

http_code=$(echo "$response" | tail -n1)
body=$(echo "$response" | sed '$d')

if [ "$http_code" -ne 200 ]; then
  echo "Error: API returned status $http_code"
  echo "$body"
  exit 1
fi

echo "$body"

Related Skills

• Image Generation – General purpose image generation
• Product Visuals – Product photography and mockups
• Image Edit – Edit and refine generated covers