Awesome-claude-code s2-publishing-domain

Book publishing domain knowledge including ISBN, BISAC codes, and industry pricing standards.

install

source · Clone the upstream repo

git clone https://github.com/pgagarinov/awesome-claude-code

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/pgagarinov/awesome-claude-code "$T" && mkdir -p ~/.claude/skills && cp -r "$T/examples/05-skills-n-agents/.claude/skills/s2-publishing-domain" ~/.claude/skills/pgagarinov-awesome-claude-code-s2-publishing-domain && rm -rf "$T"

manifest: examples/05-skills-n-agents/.claude/skills/s2-publishing-domain/SKILL.md

source content

S2 — Publishing Domain Knowledge

Background knowledge for the book publishing domain. This skill is loaded automatically by Claude when relevant — it is NOT available as a slash command.

ISBN-13 Validation (Full Algorithm)

ISBN-13 is a 13-digit identifier. The last digit is a check digit computed as:

Take the first 12 digits
Multiply each digit alternately by 1 and 3 (positions 0-11)
Sum all products
Check digit =
```
(10 - (sum % 10)) % 10
```

Example: ISBN

9780306406157

Digits: 9,7,8,0,3,0,6,4,0,6,1,5,7
Weights: 1,3,1,3,1,3,1,3,1,3,1,3
Products: 9,21,8,0,3,0,6,12,0,18,1,15
Sum: 93
Check: (10 - (93 % 10)) % 10 = (10 - 3) % 10 = 7 ✓

Important: The regex-only validation in

utils/validators.py

is incomplete. When asked to improve ISBN validation, implement the full check digit algorithm above.

Valid prefixes:

(most books) or

(overflow and some music).

BISAC Subject Codes

BISAC (Book Industry Standards and Advisory Committee) codes categorize books:

Format: 3-letter category + 6-digit number (e.g.,
```
FIC000000
```
)
Common prefixes:
```
FIC
```
(Fiction),
```
NON
```
(Nonfiction),
```
JUV
```
(Juvenile),
```
YAF
```
(Young Adult Fiction),
```
COM
```
(Computers),
```
SCI
```
(Science)
The
```
000000
```
suffix means "General" within that category

Pricing Conventions

Always store prices in cents (integer) to avoid floating-point errors
Display format:
```
$XX.99
```
(US convention)
Common price points: $9.99, $14.99, $24.99, $29.99
Ebooks typically 30-50% less than physical edition

Library of Congress Classification (Basics)

Single letter = broad class (e.g., P = Language and Literature)
Letter + subclass (e.g., PS = American Literature)
Used for shelving in academic/research libraries
Different from Dewey Decimal (used in public libraries)