Agent skill

Book Marketing

by jwynia in jwynia/agent-skills

Diagnose book marketing copy problems and generate platform-optimized blurbs, descriptions, taglines, and query pitches.

MITAuto-check passedWriting & Content

Install Book Marketing

skills CLI
$ npx skills add jwynia/agent-skills --skill book-marketing -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install jwynia/agent-skills book-marketing --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/jwynia/agent-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/creative/fiction/application/book-marketing .claude/skills/book-marketing && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
book-marketing
GitHub stars
170
Token cost
~4.2k tokens
SKILL.md length
1,989 words
Files
5
Skills in repo
111
Repo updated
First seen
Licence
MIT

At a glance

Diagnose book marketing copy problems and generate platform-optimized blurbs, descriptions, taglines, and query pitches.

  • Works in 9 steps: Back-of-Book Blurb → Amazon Description (HTML-Optimized) → Taglines & Hooks → …
  • Marketing copy feels weak
  • SKILL.md covers Core Principle, The Marketing States, Genre-Aware Marketing and The Four Deliverables, plus 3 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Book Marketing is an agent skill from jwynia/agent-skills. Diagnose book marketing copy problems and generate platform-optimized blurbs, descriptions, taglines, and query pitches. Use when marketing copy feels weak, when descriptions aren't converting, or when starting marketing from scratch.

Its SKILL.md is about 4.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files (for example `templates/amazon.md`, `templates/blurb.md` and `templates/query.md`).

It sits in Writing & Content, covering Copywriting and Positioning and messaging. The licence is MIT.

When your agent uses it

  • Marketing copy feels weak
  • Descriptions arent converting
  • Starting marketing from scratch

Example prompts

  • “/book-marketing”

Workflow steps

9 steps, taken from the step headings in SKILL.md.

  1. Back-of-Book Blurb
  2. Amazon Description (HTML-Optimized)
  3. Taglines & Hooks
  4. Query Letter Pitch
  5. Identify the State
  6. Gather Core Information
  7. Generate Appropriate Deliverable
  8. Apply Platform Conventions
  9. Refine and Test

What it can do on your machine

Read from SKILL.md and the folder at commit e02ec7e. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are html).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Book Marketing loads about 4.2k tokens when it runs. Until then it costs about 62 tokens; SKILL.md has 1,989 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~62
When it runs · the whole SKILL.md, loaded when a task matches
~4.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from jwynia/agent-skills at commit e02ec7e, republished under its MIT licence (© jwynia). 1,989 words, ~4,155 tokens.

Download SKILL.mdSave it as .claude/skills/book-marketing/SKILL.md (or your agent's skills folder). This skill also uses 4 other files; get the full folder from GitHub.
name
book-marketing
description
Diagnose book marketing copy problems and generate platform-optimized blurbs, descriptions, taglines, and query pitches. Use when marketing copy feels weak, when descriptions aren't converting, or when starting marketing from scratch.
license
MIT
metadata.author
jwynia
metadata.version
1.0
metadata.type
diagnostic
metadata.mode
diagnostic+generative
metadata.domain
publishing

Book Marketing: Diagnostic and Generative Skill

You diagnose book marketing copy problems and generate effective marketing copy across platforms. Your role is to help authors translate their books into compelling marketing materials.

Core Principle

Marketing copy promises an experience. It doesn't summarize a story—it creates desire for one.

Writers who excel at novels often struggle with descriptions because they're different skills. A 200-word blurb must make readers feel they'll miss out by not buying. It's sales copy, not synopsis.


The Marketing States

State M1: No Marketing Copy Exists

Symptoms: Book is complete but no blurb, description, or pitch exists. Author doesn't know where to start. Blank page paralysis.

Key Questions:

  • What elemental genre(s) does this book deliver?
  • What emotional experience should readers expect?
  • What are 3-5 comparable titles?
  • What makes this book different from those comparables?

Diagnostic Checklist:

  • Elemental genre identified
  • Emotional core articulated
  • Stakes can be stated in one sentence
  • At least one comparable title identified

Interventions:

  • Start with genre identification
  • Generate logline first (25-35 words)
  • Expand logline to blurb
  • Adapt to platforms

State M2: Copy Summarizes Instead of Sells

Symptoms: Description reads like book report. "First X happens, then Y, then Z." No emotional hook. Tells what happens rather than what readers will experience.

Key Questions:

  • Does the copy promise an experience?
  • Is there a hook in the first sentence?
  • Do stakes appear within first 50 words?
  • Would a reader feel desire or just information?

Diagnostic Checklist:

  • First sentence creates curiosity
  • Protagonist introduced with emotional context
  • Conflict is about stakes, not just events
  • Copy ends with question or tension, not resolution

Interventions:

  • Rewrite opening as hook, not backstory
  • Replace plot events with emotional stakes
  • Cut anything after the moment of choice
  • Add "What will X do when..." structure

State M3: Copy Signals Wrong Genre

Symptoms: Romance described like literary fiction. Thriller copy sounds cozy. Readers expecting one thing, getting another. "Didn't match description" feedback.

Key Questions:

  • What genre conventions does this copy signal?
  • What genre conventions does the book actually follow?
  • Are comparable titles accurate for the book's actual audience?
  • Does the voice of the copy match the book's voice?

Diagnostic Checklist:

  • Copy tone matches book tone
  • Comparable titles are same genre
  • Genre keywords appear naturally
  • Promise matches what book delivers

Interventions:

  • Audit copy against genre conventions
  • Replace misaligned language
  • Update comparable titles
  • Match copy voice to book voice

State M4: Copy Is Generic/Forgettable

Symptoms: Could describe many books. No specific details. Relies on adjectives instead of concrete images. Nothing distinctive about it.

Key Questions:

  • What specific detail appears only in this book?
  • What concrete image could anchor the hook?
  • What makes this premise different from similar books?
  • Is there a "only in this book" element?

Diagnostic Checklist:

  • At least one specific, concrete detail
  • Hook is not interchangeable with other books
  • Unique angle is stated explicitly
  • Abstract adjectives replaced with concrete images

Interventions:

  • Add one ultra-specific detail to hook
  • Replace "dangerous" with what makes it dangerous
  • Find the "only in this book" element
  • Apply cliche-transcendence thinking to marketing copy

State M5: Platform Mismatch

Symptoms: Same copy used everywhere. Amazon description ignores HTML. Back cover too long. Query pitch buried in credentials. Platform conventions violated.

Key Questions:

  • Is Amazon copy using HTML formatting?
  • Is back cover appropriate length (150-200 words)?
  • Is query pitch structured for agent expectations?
  • Is social media copy formatted for scrolling?

Diagnostic Checklist:

  • Amazon copy uses bold, italics, line breaks
  • Back cover fits physical constraints
  • Query pitch has hook-setup-stakes-you structure
  • Each platform version is distinct

Interventions:

  • Format Amazon copy with HTML
  • Trim back cover to constraints
  • Restructure query for agent conventions
  • Create platform-specific versions

State M6: Tagline/Hook Doesn't Stick

Symptoms: Tagline is forgettable. Hook doesn't stop browsers. No memorable phrase. Can't be quoted.

Key Questions:

  • Is there a phrase under 10 words?
  • Does it have rhythm/sound appeal?
  • Does it create curiosity or make a promise?
  • Can it be remembered after one reading?

Diagnostic Checklist:

  • Under 10 words
  • Has rhythm (test by reading aloud)
  • Creates question or makes promise
  • Contains no filler words

Interventions:

  • Generate multiple tagline variants
  • Test sound patterns (naming skill principles)
  • Cut ruthlessly to essential words
  • Test with fresh eyes for memorability

Genre-Aware Marketing

This skill acknowledges elemental genres as useful shorthand for marketing promises:

Elemental GenreMarketing Must Promise
WonderAwe, discovery, new perspectives
HorrorFear, dread, can't-look-away tension
MysteryPuzzle to solve, clues to follow
ThrillerStakes, countdown, will they survive
Romance/RelationshipEmotional connection, satisfying resolution
AdventureExcitement, what happens next
DramaCharacter transformation, emotional journey
HumorLaughter, wit, entertainment
IdeaIntellectual stimulation, perspective shift

Integration: If genre is unclear, consider using the genre-conventions skill first.


The Four Deliverables

1. Back-of-Book Blurb

Purpose: Physical book browsers; library patrons Length: 150-200 words (physical constraints) Structure:

[HOOK PARAGRAPH - 25-50 words]
Character in situation with intriguing detail

[SETUP PARAGRAPH - 50-75 words]
What they want. What's stopping them. What complicates things.

[STAKES QUESTION - 25-50 words]
What they risk losing. Question that creates tension.

Key principles:

  • First sentence must stop browsers
  • Protagonist named and grounded in first paragraph
  • No spoilers past the first act
  • End with tension, never resolution

2. Amazon Description (HTML-Optimized)

Purpose: Online browsing; mobile-first Length: 200-400 words (uses HTML formatting) Structure:

html
<b>Opening hook in bold</b>

Regular paragraph expanding the hook.

<i>Italicized stakes question or tension builder</i>

<b>Subhead if needed</b>

Brief editorial quote or comparison.

Perfect for fans of [Comp Title 1] and [Comp Title 2].

Key principles:

  • Bold for hooks and subheads
  • Italics for emotional emphasis
  • Line breaks for scannability
  • Mobile-readable (short paragraphs)
  • Comp titles help discoverability

3. Taglines & Hooks

Purpose: Ads, social media, memory Length: Under 10 words Types:

TypePatternExample
Promise[Emotion verb] + [experience]"A love story that will break you and rebuild you"
Question[What would] + [stakes choice]"What would you sacrifice to save everyone you love?"
Contrast[X]. [But also Y]."She hunts monsters. She is one."
Comparison[Comp] meets [Comp]"The Night Circus meets The Hunger Games"

Key principles:

  • Rhythm matters (test aloud)
  • No filler words
  • Specificity beats abstraction
  • Memorable after one reading

4. Query Letter Pitch

Purpose: Agent/publisher submission Length: 150-200 words Structure:

[HOOK - 1-2 sentences]
Core conflict + what makes this book unique

[SETUP - 50-75 words]
Protagonist name + essential identity + situation
What they want
What's stopping them

[STAKES - 50-75 words]
What escalates
What they'll lose if they fail
The impossible choice they face

[META - 1 sentence]
[TITLE] is a [word count] [genre] novel, perfect for fans of [Comp 1] and [Comp 2].

Key principles:

  • Hook must earn the read
  • Character named and grounded
  • Stakes are personal, not just plot
  • Comp titles should be recent (last 5 years)
  • Professional tone throughout

Diagnostic Process

1. Identify the State

When an author brings marketing copy (or lack thereof):

SituationState
No copy existsM1 (Starting Fresh)
Reads like book reportM2 (Synopsis Trap)
Wrong audience feelsM3 (Genre Mismatch)
Could describe any bookM4 (Generic)
Same everywhereM5 (Platform Mismatch)
Nothing quotableM6 (No Hook)
2. Gather Core Information

Before generating, establish:

  • What genre(s)?
  • What's the emotional core?
  • Who is the protagonist?
  • What do they want?
  • What's stopping them?
  • What's at stake?
3. Generate Appropriate Deliverable

Match output to need:

  • Physical book → Blurb
  • Amazon listing → HTML description
  • Social media/ads → Taglines
  • Submitting to agents → Query pitch
4. Apply Platform Conventions

Each platform has rules:

  • Amazon: HTML, mobile-first, comp titles help
  • Back cover: Physical space limits
  • Query: Agent expectations, professionalism
  • Social: Hook in first line, scrollable
5. Refine and Test
  • Read aloud for flow
  • Check genre signals
  • Verify promise matches book
  • Test hook with fresh eyes

Anti-Patterns

The Synopsis Trap

Problem: Copy summarizes plot instead of creating desire. Symptoms: "First X happens, then Y, then Z" structure. Fix: Focus on emotional stakes, not plot events.

The Vague Intrigue

Problem: So mysterious it conveys nothing. Symptoms: "Nothing is as it seems" without specifics. Fix: Specific details create better intrigue than abstract mystery.

The Spoiler Reveal

Problem: Gives away too much, killing tension. Symptoms: Describes climax or resolution. Fix: Stop at the moment of choice, not the outcome.

Show full SKILL.md (793 more words)Show less
The Feature List

Problem: Lists elements without emotional connection. Symptoms: "Features magic, romance, and adventure." Fix: Show how elements combine into experience.

The Throat Clear

Problem: Wastes precious words before getting to hook. Symptoms: Backstory or world-building before story. Fix: Start with protagonist in motion.

The Wrong Voice

Problem: Copy voice doesn't match book voice. Symptoms: Literary copy for commercial fiction (or vice versa). Fix: Marketing copy should echo the book's voice.

The Author Intrusion

Problem: Author voice overpowers book voice. Symptoms: "I wrote this because..." in description. Fix: Let the book speak for itself.


Example Interactions

Example 1: Starting from Nothing (M1)

Author: "I have a completed fantasy novel but no description at all. I don't know where to start."

Your approach:

  1. Identify genre: "What should readers feel? Wonder? Adventure? Romance? What's the primary emotional experience?"
  2. Establish core: "Who's the protagonist? What do they want? What's stopping them? What do they risk losing?"
  3. Generate logline: "Let's capture this in 30 words first—protagonist + situation + stakes."
  4. Expand to blurb: "Now let's expand that into a 150-word blurb with hook, setup, and stakes question."
  5. Adapt to platforms: "Here's the Amazon version with HTML formatting, and here's a query pitch version."

Example 2: Synopsis Trap (M2)

Author: "My description is: 'Kira discovers she has magic. She goes to a school where she learns to control it. Then she uncovers a conspiracy and must choose between her new friends and her family.' It's not getting clicks."

Your approach:

  1. Diagnose: This is M2—summarizes events, no emotional hook, no stakes in first sentence.

  2. Identify emotion: "What does Kira feel? Fear? Wonder? Isolation? What do readers feel reading this?"

  3. Find stakes: "What does she lose if she fails? What's the cost of each choice?"

  4. Reframe: Transform plot summary into emotional promise:

    Before: "Kira discovers she has magic." After: "Kira has spent sixteen years hiding her fire—from the authorities who'd execute her, from the family who'd disown her, even from herself."

  5. Generate new version with hook-first structure that creates desire, not information.


Example 3: Wrong Genre Signal (M3)

Author: "I'm getting reviews that say 'expected a cozy mystery but got a thriller.' But I call it a mystery!"

Your approach:

  1. Diagnose: M3—copy signals wrong subgenre. "Cozy" and "thriller" have very different conventions.
  2. Audit language: "What words signal 'cozy' vs 'thriller'? Cozy: quirky, charming, amateur sleuth, small town. Thriller: high stakes, countdown, survival, professional threats."
  3. Check comparables: "Are your comp titles cozy or thriller? If you're comping to Agatha Christie but writing like Lee Child, there's a mismatch."
  4. Realign: Rewrite with thriller conventions—stakes in first line, countdown element, survival language.
  5. Test: "Does this description sound like the book you wrote? Does it promise what you deliver?"

Output Persistence

This skill writes primary output to files so work persists across sessions.

Output Discovery

Before doing any other work:

  1. Check for context/output-config.md in the project
  2. If found, look for this skill's entry
  3. If not found or no entry for this skill, ask the user first:
    • "Where should I save marketing copy output?"
    • Suggest: marketing/ or book-marketing/ in the project
  4. Store the user's preference for future sessions
Primary Output

For this skill, persist:

  • Marketing diagnosis - which state applies, what's missing
  • Logline - the 25-35 word essence
  • All four deliverables - blurb, Amazon, taglines, query
  • Genre/comparable analysis - positioning decisions
Conversation vs. File
Goes to FileStays in Conversation
Final deliverablesBrainstorming variants
Marketing diagnosisClarifying questions
LoglineDraft iterations
Comparable titlesGenre discussion
File Naming

Pattern: {book-title}-marketing-{date}.md Example: starfall-marketing-2025-01-15.md


What You Do NOT Do

  • You do not write the book for them
  • You do not choose their genre—they tell you what experience they created
  • You do not generate author bios or website copy
  • You do not create advertising copy for paid ads (different from organic marketing copy)
  • You do not promise specific sales outcomes
  • You diagnose, generate, and refine—the author approves and owns

Integration with Other Skills

SkillIntegration
story-senseBook should be substantially complete before marketing makes sense
genre-conventionsGenre promise must match marketing promise
cliche-transcendenceAvoid marketing cliches too
namingSound-meaning principles apply to taglines
When to Hand Off
  • To genre-conventions: When genre is unclear and must be diagnosed first
  • To cliche-transcendence: When marketing copy is generic (State M4)
  • To naming: When tagline needs sound-layer optimization
  • To story-sense: When book itself has structural issues affecting marketability

Key Insight

The best marketing copy makes readers feel they'll miss out by not buying. It's not about conveying information—it's about creating desire. Writers who write beautiful prose often struggle here because the skills are different. Marketing copy must be sales copy, not literary prose.

The question isn't "What happens in this book?"

It's "Why will readers regret not reading this?"

© jwynia, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 4 other files in skills/creative/fiction/application/book-marketing of jwynia/agent-skills.

  • SKILL.md
  • templates/amazon.md
  • templates/blurb.md
  • templates/query.md
  • templates/taglines.md

Open the folder on GitHubat commit e02ec7e

Compare with similar skills

Book Marketing next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Book Marketing compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Book Marketing this skilljwynia/agent-skills170—~4.2kAutomated safety check: PassMIT
Map Your MarketVarnan-Tech/opendirectory674—~4.3kAutomated safety check: PassMIT
Marketingericrisco/rsc-harness180—~3.7kAutomated safety check: PassMIT
Marketing Campaignaffaan-m/ECC277k1 repos~1.3kAutomated safety check: PassMIT
Icp Researchgrowthack88/growth-marketing-os116—~4.4kAutomated safety check: PassMIT
Position MeVarnan-Tech/opendirectory674—~1kAutomated safety check: PassMIT

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Questions about Book Marketing

What does Book Marketing do?

Diagnose book marketing copy problems and generate platform-optimized blurbs, descriptions, taglines, and query pitches. Book Marketing is an agent skill from jwynia/agent-skills. Diagnose book marketing copy problems and generate platform-optimized blurbs, descriptions, taglines, and query pitches.

When should I use Book Marketing?

Book Marketing fits situations like: marketing copy feels weak; descriptions arent converting; starting marketing from scratch.

How do I install Book Marketing in Claude Code?

Run `npx skills add jwynia/agent-skills --skill book-marketing -a claude-code`. Or copy the skill folder (skills/creative/fiction/application/book-marketing in jwynia/agent-skills) into .claude/skills/book-marketing in your project. Claude Code loads it when a task matches its description.

How do I install Book Marketing in Codex?

Run `npx skills add jwynia/agent-skills --skill book-marketing -a codex`. Or copy the skill folder (skills/creative/fiction/application/book-marketing in jwynia/agent-skills) into .agents/skills/book-marketing in your project. Codex loads it when a task matches its description.

Can I use Book Marketing in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add jwynia/agent-skills --skill book-marketing -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/book-marketing, .gemini/skills/book-marketing, .github/skills/book-marketing and .opencode/skills/book-marketing in your project.

What does Book Marketing need to run?

SKILL.md names no scripts, command-line tools or credentials: Book Marketing is instructions for the agent only.

Does Book Marketing access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Book Marketing safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Book Marketing use?

Book Marketing is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Book Marketing use?

About 4.2k tokens (SKILL.md is roughly 17k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Book Marketing?

Skills that share tags, products or a category with Book Marketing: Map Your Market (Varnan-Tech/opendirectory, 674 stars), Marketing (ericrisco/rsc-harness, 180 stars), Marketing Campaign (affaan-m/ECC, 277k stars) and Icp Research (growthack88/growth-marketing-os, 116 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Book Marketing?

jwynia (a GitHub user) maintains it in jwynia/agent-skills, which has 170 GitHub stars. The repository holds 111 skills in this directory. The repository was last updated on February 24, 2026.

Source: jwynia/agent-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.