SEO Geo
ericrisco/rsc-harness
A skill your agent uses when one existing page needs to rank in Google AND get cited by AI answer engines — auditing a URL for on-page SEO, structured-data JSON-LD, GEO citation levers, Core Web…
SEO optimization with keyword analysis, readability assessment, technical validation, content quality.
$ npx skills add secondsky/claude-skills --skill seo-optimizer -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install secondsky/claude-skills seo-optimizer --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/secondsky/claude-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/seo-optimizer/skills/seo-optimizer .claude/skills/seo-optimizer && rm -rf skills-srcUse ~/.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/
Install the "seo-optimizer" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/seo-optimizer/skills/seo-optimizer into .claude/skills/seo-optimizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "seo-optimizer", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/secondsky/claude-skills/tree/main/plugins/seo-optimizer/skills/seo-optimizerType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add secondsky/claude-skills --skill seo-optimizer -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install secondsky/claude-skills seo-optimizer --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/secondsky/claude-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/seo-optimizer/skills/seo-optimizer .agents/skills/seo-optimizer && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "seo-optimizer" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/seo-optimizer/skills/seo-optimizer into .agents/skills/seo-optimizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "seo-optimizer", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add secondsky/claude-skills --skill seo-optimizer -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install secondsky/claude-skills seo-optimizer --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/secondsky/claude-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/seo-optimizer/skills/seo-optimizer .cursor/skills/seo-optimizer && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "seo-optimizer" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/seo-optimizer/skills/seo-optimizer into .cursor/skills/seo-optimizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "seo-optimizer", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/secondsky/claude-skills.git --path plugins/seo-optimizer/skills/seo-optimizer--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add secondsky/claude-skills --skill seo-optimizer -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install secondsky/claude-skills seo-optimizer --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/secondsky/claude-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/seo-optimizer/skills/seo-optimizer .gemini/skills/seo-optimizer && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "seo-optimizer" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/seo-optimizer/skills/seo-optimizer into .gemini/skills/seo-optimizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "seo-optimizer", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install secondsky/claude-skills seo-optimizerInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add secondsky/claude-skills --skill seo-optimizer -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/secondsky/claude-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/seo-optimizer/skills/seo-optimizer .github/skills/seo-optimizer && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "seo-optimizer" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/seo-optimizer/skills/seo-optimizer into .github/skills/seo-optimizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "seo-optimizer", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add secondsky/claude-skills --skill seo-optimizer -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install secondsky/claude-skills seo-optimizer --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/secondsky/claude-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/seo-optimizer/skills/seo-optimizer .opencode/skills/seo-optimizer && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "seo-optimizer" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/seo-optimizer/skills/seo-optimizer into .opencode/skills/seo-optimizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "seo-optimizer", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
seo-optimizerSEO optimization with keyword analysis, readability assessment, technical validation, content quality.
SEO Optimizer is an agent skill from secondsky/claude-skills. SEO optimization with keyword analysis, readability assessment, technical validation, content quality. Use for search rankings, blog posts, content audits, or encountering keyword density, readability scores, meta tags, schema markup errors.
Its SKILL.md is about 1.6k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including reference files (for example `references/analysis-framework.md` and `references/output-templates.md`).
It sits in Marketing & SEO, covering Plain language and style rules, On-page SEO and Content marketing. The repository describes itself as: Production-ready skills for Claude Code CLI - Cloudflare, React, Tailwind v4, and AI integrations. The licence is MIT.
6 steps, taken from the step headings in SKILL.md.
Read from SKILL.md and the folder at commit 8837836. It shows what the files ask for, not the result of running them.
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.
No scripts in the folder and no shell commands in SKILL.md (its code samples are javascript and markdown).
From the folder's file list and the shell code blocks in SKILL.md.
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
SEO Optimizer loads about 1.6k tokens when it runs, and up to ~8.9k if it reads all its reference files. Until then it costs about 64 tokens; SKILL.md has 576 words of instructions outside code blocks.
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.
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.
The full file from secondsky/claude-skills at commit 8837836, republished under its MIT licence (© secondsky). 576 words, ~1,596 tokens.
.claude/skills/seo-optimizer/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.Perform comprehensive SEO analysis and optimization covering keyword placement, readability metrics, technical elements, and content quality to improve search engine rankings and user experience.
// Readability scoring example
const readabilityMetrics = {
fleschScore: 65, // Target: 60-70
gradeLevel: 8, // Target: 7-9
avgSentenceLength: 18, // Target: <20 words
passiveVoice: 5, // Target: <10%
transitionWords: 30 // Target: >30%
};Key Metrics:
| Element | Recommendation |
|---|---|
| Meta Title | 50-60 characters with primary keyword |
| Meta Description | 150-160 characters, compelling with keyword |
| URL Slug | Short, keyword-rich, hyphen-separated |
| Image Alt Text | Descriptive with natural keyword usage |
| Internal Links | Link to related content with keyword anchors |
| External Links | Quality outbound links to authoritative sources |
Organize findings into prioritized action items based on impact and implementation effort.
# SEO Analysis Report
## Overall Score: X/100
### Quick Wins 🚀
1. [Specific action with exact change]
2. [Specific action with exact change]
## Keyword Analysis
- Primary keyword density
- Placement verification
- LSI keyword coverage
## Readability Metrics
- Flesch Reading Ease: XX/100
- Grade Level: X
- Sentence length assessment
## Technical SEO
- Meta tags analysis
- URL optimization
- Image optimization
## Content Gaps
- Missing subtopics
- Coverage recommendations
- Topic expansion opportunities
## Competitor Insights
- Top ranking pages analysis
- Word count comparison
- Unique angles they cover
- Our competitive advantage
## Implementation Checklist
- [ ] Action item 1
- [ ] Action item 2
## Estimated Impact
- **Time to Implement**: X hours
- **Expected Improvement**: [Moderate/Significant] ranking boost
- **Priority**: [High/Medium/Low]
- **Timeframe**: [Weeks until results]See references/analysis-framework.md for:
See references/output-templates.md for:
"SEO is about creating valuable, well-optimized content that serves user intent better than competitors."
Focus on genuine value creation, not manipulation tactics. Quality content that helps users naturally attracts engagement signals that improve rankings.
© secondsky, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
SKILL.md and 2 other files (references) in plugins/seo-optimizer/skills/seo-optimizer of secondsky/claude-skills.
Open the folder on GitHubat commit 8837836
SEO Optimizer 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| SEO Optimizer this skillsecondsky/claude-skills | 227 | — | ~1.6k | Automated safety check: Pass | MIT | |
| SEO Geoericrisco/rsc-harness | 156 | — | ~2.8k | Automated safety check: Pass | MIT | |
| Content SEOjdevalk/skills | 104 | — | ~2.3k | Automated safety check: Pass | MIT | |
| SEOgridaco/grida | 2.7k | — | ~2.1k | Automated safety check: Pass | Apache-2.0 | |
| SEO ContentAgriciDaniel/codex-seo | 787 | 5 repos | ~2.3k | Automated safety check: Pass | MIT | |
| Article Writingericrisco/rsc-harness | 156 | — | ~2.9k | Automated safety check: Pass | MIT |
ericrisco/rsc-harness
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Categories
SEO optimization with keyword analysis, readability assessment, technical validation, content quality. SEO Optimizer is an agent skill from secondsky/claude-skills. SEO optimization with keyword analysis, readability assessment, technical validation, content quality.
SEO Optimizer fits situations like: search rankings; encountering keyword density; readability scores; schema markup errors.
Run `npx skills add secondsky/claude-skills --skill seo-optimizer -a claude-code`. Or copy the skill folder (plugins/seo-optimizer/skills/seo-optimizer in secondsky/claude-skills) into .claude/skills/seo-optimizer in your project. Claude Code loads it when a task matches its description.
Run `npx skills add secondsky/claude-skills --skill seo-optimizer -a codex`. Or copy the skill folder (plugins/seo-optimizer/skills/seo-optimizer in secondsky/claude-skills) into .agents/skills/seo-optimizer in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add secondsky/claude-skills --skill seo-optimizer -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/seo-optimizer, .gemini/skills/seo-optimizer, .github/skills/seo-optimizer and .opencode/skills/seo-optimizer in your project.
SKILL.md names no scripts, command-line tools or credentials: SEO Optimizer is instructions for the agent only.
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.
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.
SEO Optimizer is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
About 1.6k tokens (SKILL.md is roughly 6.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 7.3k tokens, read only when the agent opens those files.
Skills that share tags, products or a category with SEO Optimizer: SEO Geo (ericrisco/rsc-harness, 156 stars), Content SEO (jdevalk/skills, 104 stars), SEO (gridaco/grida, 2.7k stars) and SEO Content (AgriciDaniel/codex-seo, 787 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
secondsky (a GitHub user) maintains it in secondsky/claude-skills, which has 227 GitHub stars. The repository holds 169 skills in this directory. The repository was last updated on September 28, 2026.
Source: secondsky/claude-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.