AGENT SKILLBY SICKN33
SEO fundamentals
AT A GLANCE
SEO fundamentals is an SEO skill for AI agents. Foundational principles for sustainable search visibility. The sickn33/antigravity-awesome-skills repository on GitHub, maintained by sickn33, has 42.1K stars and the MIT license. Its SKILL.md runs to about 850 words. To add it, run npx skills add sickn33/antigravity-awesome-skills --skill seo-fundamentals
- SOURCE REPOSITORY
- sickn33/antigravity-awesome-skills (opens GitHub in a new tab)
- REPO STARS
- SOURCE REPOSITORY
- LICENSE
- MIT
- CATEGORIES
- SKILL.MD SIZE
- 5.9 KB171 LINES
QUICK ANSWER
- WHAT IT IS01
- Foundational principles for sustainable search visibility. It stands out by giving search and SEO workflows a defined shape, so the agent asks for better context and returns a more usable result.
- INPUTS02
- Context for search and SEO workflows: your goals, audience, constraints, and any source material the skill asks for.
- OUTPUT03
- A ready-to-use result for search and SEO workflows: the analysis, copy, or recommendations the agent produces.
INSTALL
One command adds this skill from its source repository.
npx skills add sickn33/antigravity-awesome-skills --skill seo-fundamentalsREAD THE SKILL.MD BELOW BEFORE YOU RUN IT. SKILLS INSTRUCT YOUR AGENT.
SKILL.MD
The full file, as published in the source repository. Copy it, download it or open it on GitHub.
ON THIS PAGE · 16
SEO Fundamentals#
Foundational principles for sustainable search visibility. This skill explains how search engines evaluate quality, not tactical shortcuts.
1. E-E-A-T (Quality Evaluation Framework)#
E-E-A-T is not a direct ranking factor. It is a framework used by search engines to evaluate content quality, especially for sensitive or high-impact topics.
| Dimension | What It Represents | Common Signals |
|---|---|---|
| Experience | First-hand, real-world involvement | Original examples, lived experience, demonstrations |
| Expertise | Subject-matter competence | Credentials, depth, accuracy |
| Authoritativeness | Recognition by others | Mentions, citations, links |
| Trustworthiness | Reliability and safety | HTTPS, transparency, accuracy |
Pages competing in the same space are often differentiated by trust and experience, not keywords.
2. Core Web Vitals (Page Experience Signals)#
Core Web Vitals measure how users experience a page, not whether it deserves to rank.
| Metric | Target | What It Reflects |
|---|---|---|
| LCP | < 2.5s | Loading performance |
| INP | < 200ms | Interactivity |
| CLS | < 0.1 | Visual stability |
Important context:
- CWV rarely override poor content
- They matter most when content quality is comparable
- Failing CWV can hold back otherwise good pages
3. Technical SEO Principles#
Technical SEO ensures pages are accessible, understandable, and stable.
Crawl & Index Control#
| Element | Purpose |
|---|---|
| XML sitemaps | Help discovery |
| robots.txt | Control crawl access |
| Canonical tags | Consolidate duplicates |
| HTTP status codes | Communicate page state |
| HTTPS | Security and trust |
Performance & Accessibility#
| Factor | Why It Matters |
|---|---|
| Page speed | User satisfaction |
| Mobile-friendly design | Mobile-first indexing |
| Clean URLs | Crawl clarity |
| Semantic HTML | Accessibility & understanding |
4. Content SEO Principles#
Page-Level Elements#
| Element | Principle |
|---|---|
| Title tag | Clear topic + intent |
| Meta description | Click relevance, not ranking |
| H1 | Page’s primary subject |
| Headings | Logical structure |
| Alt text | Accessibility and context |
Content Quality Signals#
| Dimension | What Search Engines Look For |
|---|---|
| Depth | Fully answers the query |
| Originality | Adds unique value |
| Accuracy | Factually correct |
| Clarity | Easy to understand |
| Usefulness | Satisfies intent |
5. Structured Data (Schema)#
Structured data helps search engines understand meaning, not boost rankings directly.
| Type | Purpose |
|---|---|
| Article | Content classification |
| Organization | Entity identity |
| Person | Author information |
| FAQPage | Q&A clarity |
| Product | Commerce details |
| Review | Ratings context |
| BreadcrumbList | Site structure |
Schema enables eligibility for rich results but does not guarantee them.
6. AI-Assisted Content Principles#
Search engines evaluate output quality, not authorship method.
Effective Use#
- AI as a drafting or research assistant
- Human review for accuracy and clarity
- Original insights and synthesis
- Clear accountability
Risky Use#
- Publishing unedited AI output
- Factual errors or hallucinations
- Thin or duplicated content
- Keyword-driven text with no value
7. Relative Importance of SEO Factors#
There is no fixed ranking factor order. However, when competing pages are similar, importance tends to follow this pattern:
| Relative Weight | Factor |
|---|---|
| Highest | Content relevance & quality |
| High | Authority & trust signals |
| Medium | Page experience (CWV, UX) |
| Medium | Mobile optimization |
| Baseline | Technical accessibility |
Technical SEO enables ranking; content quality earns it.
8. Measurement & Evaluation#
SEO fundamentals should be validated using multiple signals, not single metrics.
| Area | What to Observe |
|---|---|
| Visibility | Indexed pages, impressions |
| Engagement | Click-through, dwell time |
| Performance | CWV field data |
| Coverage | Indexing status |
| Authority | Mentions and links |
Key Principle: Sustainable SEO is built on useful content, technical clarity, and trust over time. There are no permanent shortcuts.
When to Use#
This skill is applicable to execute the workflow or actions described in the overview.
Limitations#
- Use this skill only when the task clearly matches the scope described above.
- Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
- Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.
FAQ
07 QUESTIONS
01What is the SEO fundamentals agent skill?
Foundational principles for sustainable search visibility. It is listed under SEO in the 100xLab agent skills directory.
02How do I install SEO fundamentals in Cursor, Claude Code, or Codex?
Run npx skills add sickn33/antigravity-awesome-skills --skill seo-fundamentals in the project where you want it, then ask your agent for the skill by name. The --skill flag installs only SEO fundamentals, not every skill in the repository.
03What does the SEO fundamentals SKILL.md cover?
The SKILL.md includes sections on E-E-A-T (Quality Evaluation Framework), Core Web Vitals (Page Experience Signals), Technical SEO Principles, Crawl & Index Control, Performance & Accessibility and Content SEO Principles. Read the full text on this page or in plain markdown at /resources/agent-skills/sickn33-antigravity-awesome-skills--seo-fundamentals--e08wz1/raw.
04Which agents can use SEO fundamentals?
SEO fundamentals installs with the cross-agent skills installer (npx skills add), which sets it up for agents such as Claude Code, Cursor and Codex. Each agent loads the SKILL.md when you ask for the skill by name.
05What license is SEO fundamentals under?
The sickn33/antigravity-awesome-skills repository declares the MIT license. Read the license file in the repository before you copy or redistribute the skill.
06Is SEO fundamentals free to use?
Reading, copying and installing SEO fundamentals costs nothing: it is published in a public GitHub repository under the MIT license. Reuse and redistribution follow that license.
07Where is the source of SEO fundamentals?
SEO fundamentals comes from https://github.com/sickn33/antigravity-awesome-skills, which has 42.1K GitHub stars. The SKILL.md is at https://github.com/sickn33/antigravity-awesome-skills/blob/HEAD/skills/seo-fundamentals/SKILL.md. The author is sickn33.
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ATTRIBUTION
SEO fundamentals was written by its original authors and is published in sickn33/antigravity-awesome-skills (opens GitHub in a new tab) under the MIT license. All rights stay with the original authors.
100xLab did not write, maintain or endorse this skill. This page lists it for discovery. Repo stars belong to the source repository, not to the skill. Review any skill before you install it.