Deep single-page SEO analysis covering on-page elements, content quality, technical meta tags, schema, images, and performance.
SkillScore96Maintained
Automatic
◆Marketing & Content pack
Last verified 9/19/2026
What it changes
Passed 24 of 25 test cases with the skill, and 16 of 25 without it.
Without skill64%
With skill96%
Checks it passed that the model alone missed
The response refrains from recommending FAQPage schema.
The response names backlinks_summary for backlink data.
The response refrains from recommending FAQPage schema markup.
and 9 more in the full report
8 fixed16 passed either way1 still failing0 broke
Pass-rate lift
+32 pp
Tokens
+28%
Agent turns
0%
Response time
-14%
Model gemini-3.6-flashMeasured 9/19/2026v224 of 25 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 8 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 8
Prompt
I am auditing the images on a product page. Product-hero.jpg is 250KB and product-diagram.png is 650KB. What issue priority levels should be assigned to these image sizes?
What was checked, without and with the skill
Checked
Without skill
With skill
The response classifies the 250KB image file size as a warning.
Missed
Passed
The response classifies the 650KB image file size as a critical issue.
Missed
Passed
case-06 · gemini-3.6-flash · 9/19/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md85 linessingle file
Single Page Analysis
What to Analyze
On-Page SEO
Title tag: 50-60 characters, includes primary keyword, unique
Meta description: 150-160 characters, compelling, includes keyword
Meta description is not a restatement of the title: run
"${CLAUDE_PLUGIN_ROOT}/scripts/claude-seo" run metadata_template.py --title "<title>" --description "<desc>" --json
(heuristic, deterministic string comparison). A description that opens by
repeating its own title and closes on a stock CTA ("Try it free now.",
"Start free!") is templated metadata, the shape bulk generation jobs produce
site-wide, and duplicated or templated metadata is a documented
content-quality problem regardless of how original the body copy is
H1: exactly one, matches page intent, includes keyword
H2-H6: logical hierarchy (no skipped levels), descriptive
URL: short, descriptive, hyphenated, no parameters
Internal links: sufficient, relevant anchor text, no orphan pages
External links: to authoritative sources, reasonable count
Content Quality
Word count vs page type minimums (see quality-gates.md)