SEO Fundamentals

seo-fundamentals

SEO fundamentals, E-E-A-T, Core Web Vitals, and Google algorithm principles.

CongDon1207/AGENTS.md·0installs18stars

SKILL.md

Full skill instructions

SEO Fundamentals

Principles for search engine visibility.

1. E-E-A-T Framework

Principle	Signals
Experience	First-hand knowledge, real examples
Expertise	Credentials, depth of knowledge
Authoritativeness	Backlinks, mentions, industry recognition
Trustworthiness	HTTPS, transparency, accurate info

2. Core Web Vitals

Metric	Target	Measures
LCP	< 2.5s	Loading performance
INP	< 200ms	Interactivity
CLS	< 0.1	Visual stability

3. Technical SEO Principles

Site Structure

Element	Purpose
XML sitemap	Help crawling
robots.txt	Control access
Canonical tags	Prevent duplicates
HTTPS	Security signal

Performance

Factor	Impact
Page speed	Core Web Vital
Mobile-friendly	Ranking factor
Clean URLs	Crawlability

4. Content SEO Principles

Page Elements

Element	Best Practice
Title tag	50-60 chars, keyword front
Meta description	150-160 chars, compelling
H1	One per page, main keyword
H2-H6	Logical hierarchy
Alt text	Descriptive, not stuffed

Content Quality

Factor	Importance
Depth	Comprehensive coverage
Freshness	Regular updates
Uniqueness	Original value
Readability	Clear writing

5. Schema Markup Types

Type	Use
Article	Blog posts, news
Organization	Company info
Person	Author profiles
FAQPage	Q&A content
Product	E-commerce
Review	Ratings
BreadcrumbList	Navigation

6. AI Content Guidelines

What Google Looks For

✅ Do	❌ Don't
AI draft + human edit	Publish raw AI content
Add original insights	Copy without value
Expert review	Skip fact-checking
Follow E-E-A-T	Keyword stuffing

7. Ranking Factors (Prioritized)

Priority	Factor
1	Quality, relevant content
2	Backlinks from authority sites
3	Page experience (Core Web Vitals)
4	Mobile optimization
5	Technical SEO fundamentals

8. Measurement

Metric	Tool
Rankings	Search Console, Ahrefs
Traffic	Analytics
Core Web Vitals	PageSpeed Insights
Indexing	Search Console
Backlinks	Ahrefs, Semrush

Remember: SEO is a long-term game. Quality content + technical excellence + patience = results.

Install skill

Copy and run in your terminal

npx -y skills add https://github.com/CongDon1207/AGENTS.md --skill seo-fundamentals

View on GitHub

.agent/skills/seo-fundamentals/SKILL.md

senior-data-engineer
World-class data engineering skill for building scalable data pipelines, ETL/ELT systems, and data infrastructure. Expertise in Python, SQL, Spark, Airflow, dbt, Kafka, and modern data stack. Includes data modeling, pipeline orchestration, data quality, and DataOps. Use when designing data archit...
0 installs
clean-code
Pragmatic coding standards - concise, direct, no over-engineering, no unnecessary comments
0 installs
vr-ar
VR/AR development principles. Comfort, interaction, performance requirements.
0 installs
tailwind-patterns
Tailwind CSS v4 principles. CSS-first configuration, container queries, modern patterns, design token architecture.
0 installs

More skills from CongDon1207

CongDon1207/AGENTS.md

testing-patterns

Testing patterns and principles. Unit, integration, mocking strategies.

18 0

View

CongDon1207/AGENTS.md

Guide for creating effective skills, adding skill references, skill scripts or optimizing existing skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Codex's capabilities with specialized knowledge, workflows, frameworks, libraries o...

18 0

View

CongDon1207/AGENTS.md

performance-profiling

Performance profiling principles. Measurement, analysis, and optimization techniques.

18 0

View

CongDon1207/AGENTS.md

python-patterns

Python development principles and decision-making. Framework selection, async patterns, type hints, project structure. Teaches thinking, not copying.

18 0

View

CongDon1207/AGENTS.md

xlsx

Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization. When Codex needs to work with spreadsheets (.xlsx, .xlsm, .csv, .tsv, etc) for: (1) Creating new spreadsheets with formulas and formatting, (2) Reading or analyzing d...

18 0

View

CongDon1207/AGENTS.md

pdf

Comprehensive PDF manipulation toolkit for extracting text and tables, creating new PDFs, merging/splitting documents, and handling forms. When Codex needs to fill in a PDF form or programmatically process, generate, or analyze PDF documents at scale.

18 0

View

CongDon1207/AGENTS.md

brainstorming

Socratic questioning protocol + user communication. MANDATORY for complex requests, new features, or unclear requirements. Includes progress reporting and error handling.

18 0

View

CongDon1207/AGENTS.md

web-design-guidelines

Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit design", "review UX", or "check my site against best practices".

18 0

View

CongDon1207/AGENTS.md

databases

Work with MongoDB (document database, BSON documents, aggregation pipelines, Atlas cloud) and PostgreSQL (relational database, SQL queries, psql CLI, pgAdmin). Use when designing database schemas, writing queries and aggregations, optimizing indexes for performance, performing database migrations...

18 0

View

CongDon1207/AGENTS.md

vulnerability-scanner

Advanced vulnerability analysis principles. OWASP 2025, Supply Chain Security, attack surface mapping, risk prioritization.

18 0

View

CongDon1207/AGENTS.md

docx

Comprehensive document creation, editing, and analysis with support for tracked changes, comments, formatting preservation, and text extraction. When Codex needs to work with professional documents (.docx files) for: (1) Creating new documents, (2) Modifying or editing content, (3) Working with t...

18 0

View

CongDon1207/AGENTS.md