book-promo-writer
Skill1 starsChanged 6 days agoMITView on GitHub
Write promotional copy for a book — the Google Play Books book description (คำโปรยนำ / back-cover copy) and social-network launch posts (Facebook, X, LinkedIn, Instagram). Use when asked to write or revise a book description, promo blurb, launch announcement, or to fill sections 1-2 of sale.md.
In this repository18 other files it gives its agents.
- arxiv-searchSkill
- bisac-categorizerSkill
- blockframe-videoSkill
- blog-searchSkill
- book-mockupSkill
- book-sales-apiSkill
- calculatorSkill
- claude-code-docsSkill
- create-blog-postSkill
- create-slideSkill
- find-skillsSkill
- mermaid-figuresSkill
- mintlifySkill
- play-books-pricingSkill
- quick-chartSkill
- roll-diceSkill
- technical-book-writerSkill
- uikitsSkill
The file
We split this skill into the rules it gives an agent
7 rules. About 0 are common, 3 are distinctive, and 4 are very specific to this project.
≈0
Common · estimate
Many files like this have a rule of this kind.
≈3
Distinctive · estimate
This author's own choices. Worth a look.
4
Very specific
Tied to their project's names, files or tools. Probably skip.
- Common
- Distinctive
- Very specific
- Distinctive: line 26
Never write from the title alone.
- Very specific: line 37
If a fact is not in the project (page count, price, link, tool list), do not invent it — leave an explicit placeholder such as [ใส่ลิงก์ …
- Very specific: line 43
Facts come from the project: Every feature, chapter topic, page count, and price must be traceable to toc.md, chapters/, epub.yaml, or …
- Distinctive: line 47
No invented claims: Do not add "รีวิว 5 ดาว", "ติดอันดับ", sales figures, or endorsements that do not exist.
- Distinctive: line 91
Keep the author's own voice calm and professional — this copy sells the same book the chapters write.
- Very specific: line 146
Write both artifacts into sale.md, keeping its section numbering intact:
- Very specific: line 151
Do not touch section 3 (BISAC — owned by the bisac-categorizer skill) or section 4 (pricing — owned by the play-books-pricing skill).
≈ “Common” is an estimate: at least 1 in 5 of the 350,495 skill files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.
Files
Book Promo Writer
This skill produces the two promotional artifacts every book needs before it goes on sale:
| # | Artifact | Destination |
| 1 | Google Play Books description — the back-cover copy shown on the store page | sale.md → ## 1. คำโปรยนำสำหรับ Google Play Books (Book Description) |
| 2 | Social network posts — launch posts for Facebook / X / LinkedIn / Instagram | sale.md → ## 2. คำโปรยสำหรับ Social Network (Facebook / X / LinkedIn) |
Promo copy is selling writing, not book prose. It may carry more energy than the chapters, but every factual claim still has to come from the project itself.
1. Gather Inputs First
Never write from the title alone. Collect these before drafting:
| Input | Where it lives |
| Title, subtitle, author, language | epub.yaml |
| Chapter list + per-chapter bullets | toc.md |
| Page count, format facts | sale.md (existing), build/ output |
| Target reader | AGENTS.md → "Target reader" |
| Price + store link | sale.md section 4 (from the play-books-pricing skill) |
| Previous promo copy | sale.md sections 1-2 |
If a fact is not in the project (page count, price, link, tool list), do not invent it — leave an explicit placeholder such as [ใส่ลิงก์ Google Play Books ตรงนี้].
2. Rules That Must Not Be Broken
- Facts come from the project. Every feature, chapter topic, page count, and price must be traceable to
toc.md,chapters/,epub.yaml, orsale.md. - Thai is the selling language; English stays for technical terms (
README,GFM,Mermaid,Marp,Docs-as-Code, ...) — same convention as the book itself. - The first line must stand alone. Store pages and social feeds truncate; the hook has to sell by itself before anything is expanded.
- No Markdown syntax in the Play Books description. The Partner Center description field is plain text — no
#, no**bold**, no rendered links. Use line breaks and simple*bullets as literal characters. - No invented claims. Do not add "รีวิว 5 ดาว", "ติดอันดับ", sales figures, or endorsements that do not exist.
- One promise per post. Say what the reader gets, not five unrelated things.
- Placeholders stay visible. Links, prices, and dates that are not final are written as
[...]so they are impossible to miss.
3. Deliverable A — Google Play Books Description
Google's Description metadata field is plain "back-cover copy"; the Partner Center documentation does not publish a hard character limit, so aim for 500-1,200 characters of Thai text — long enough to convert, short enough to read on a phone.
Anatomy
Hook (1-2 sentences, no setup) ← must work alone when truncated
↓
What it is + the problem it solves
↓
"What you will learn" — 3-5 bullets
↓
Who it is for
↓
Closing line + store/CTA noteTemplate
<ชื่อหนังสือ> คือ <หนึ่งประโยคบอกประโยชน์หลัก> เหมาะกับ <กลุ่มผู้อ่าน> ที่ต้องการ <ผลลัพธ์>
ในยุคที่ <บริบท/ปัญหาของผู้อ่าน> การ <พฤติกรรมที่ต้องการ> กลายเป็นทักษะที่จำเป็น หนังสือความยาว <N> หน้าเล่มนี้พาคุณจากพื้นฐาน สู่การประยุกต์ใช้ระดับมืออาชีพ ครอบคลุม <หัวข้อเด่น 3-4 หัวข้อจาก toc.md>
สิ่งที่คุณจะได้เรียนรู้:
* <หัวข้อที่ 1 — ระบุตัวอย่างที่จับต้องได้>
* <หัวข้อที่ 2>
* <หัวข้อที่ 3>
* <หัวข้อที่ 4>
เหมาะสำหรับ <อาชีพ/กลุ่มอ่าน> ที่ต้องการยกระดับ <ผลลัพธ์> ให้อ่านง่าย ทำงานร่วมกันได้ และใช้ได้จริงในโปรเจกต์จริงStyle
- Benefit first, feature second: "
อ่านจบและใช้งานได้ทันทีในโปรเจกต์จริง" beats "ครอบคลุมเนื้อหา 10 บท". - Bullets are concrete (name the tool or the task), never "และอีกมากมาย".
- Keep the author's own voice calm and professional — this copy sells the same book the chapters write.
4. Deliverable B — Social Network Posts
Platform limits (verify before each campaign; these are long-standing limits)
| Platform | Length | Notes |
| X (Twitter) | 280 characters | Link usually counted as 23; hook + one claim + link |
| 3,000 characters | Professional angle, #hashtags at the end, 3-5 | |
| Long posts truncated after the first few lines | Hook line must survive the "see more" cut | |
| 2,200 characters, max 30 hashtags | Caption + CTA in bio; 5-10 relevant hashtags |
Anatomy of a launch post
Emoji/hook line (1 line, standalone)
↓
Pain or question — 1-2 sentences
↓
Book announcement + what's inside — 3-5 bullets
↓
CTA: where to buy (placeholder link if not final)
↓
Hashtags (3-6)Template (Thai, reusable per platform)
🚀 <ประโยคเปิดขาย 1 บรรทัด>
<ปัญหาของผู้อ่าน 1-2 ประโยค — "เบื่อไหมกับ..." หรือคำถามตรงๆ>
หนังสือใหม่! "<ชื่อหนังสือ>: <คำโปรย>"
📖 <ประโยคบอกความคุ้มค่า — ความยาว อ่านจบไว ใช้ได้ทันที>
* <ประโยชน์ 1>
* <ประโยชน์ 2>
* <ประโยชน์ 3>
💻 สั่งซื้อและอ่านบน Google Play Books ได้แล้ววันนี้!
👉 [ใส่ลิงก์ Google Play Books ตรงนี้]
#<关键词1> #<关键词2> #<关键词3> #<关键词4>Generate one variant per platform: X gets the compressed 280-character version, LinkedIn gets the professional "why documentation matters" angle, Facebook keeps the friendly question hook, Instagram gets the visual/emoji-heavy version.
5. Output Convention
Write both artifacts into sale.md, keeping its section numbering intact:
- Section 1 — Google Play Books description (English heading stays, Thai body)
- Section 2 — Social network posts (one sub-block per platform is allowed)
Do not touch section 3 (BISAC — owned by the bisac-categorizer skill) or section 4 (pricing — owned by the play-books-pricing skill).
6. Final QA
- First line sells alone when everything below it is cut off
- Every claim traces to
toc.md/chapters//epub.yaml - Page count, price, and link match the rest of
sale.md(placeholders where unknown) - No Markdown syntax inside the Play Books description
- Thai reads naturally; technical terms stay in English
- 3-5 learning bullets, each concrete and specific
- Each platform variant fits its length limit
- Hashtags at the end, 3-6 for Facebook/X/LinkedIn, up to 10 for Instagram
- No invented reviews, rankings, or sales numbers
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