memory/seo-geo/tune/on-page-seo-checker/

• Reads: the page URL or HTML, target keyword, page type, competitor URLs, and symptoms.
• Writes: a user-facing audit or optimization plan plus a reusable summary that can be stored under

  memory/seo-geo/tune/on-page-seo-checker/

  .
• Promotes: blocking defects, repeated weaknesses, fix priorities, and pending decisions to

  memory/open-loops.md

  .
• Done when: every on-page element has a /10 score with evidence; fixes are ranked by impact (P0/P1/P2); an overall score and handoff summary are produced.
• Primary next skill: use the

  Next Best Skill

  below when the repair path is clear.

Emit the standard shape from skill-contract.md §Handoff Summary Format.

1. Gather Page Information — URL, target keyword, secondary keywords, page type, business goal.
   Keyword fallback (when user has no target keyword) — common for new bloggers or pre-research audits. Do NOT declare NEEDS_INPUT. Instead:
   • Read the page's H1, title tag, meta description, first 200 words, and H2 list.
   • Infer 1 primary keyword candidate (most-repeated noun phrase or the keyword the title already targets) + 2-3 secondary candidates (H2 topics, related phrases).
   • State clearly at the top of the report: "Target keyword was inferred from content:

     [phrase]

     . This gives a preliminary audit — for production use, validate the keyword against search volume data (

     ~~SEO tool

     or

     ~~search console

     ) before acting on recommendations."
   • Proceed with Status =

     DONE_WITH_CONCERNS

     , add the inferred keyword as an

     open_loop

     item for user confirmation.
2. Audit Title Tag — length (50-60 chars), keyword inclusion/position, uniqueness, compelling copy, intent match; score /10 and recommend an optimized title
3. Audit Meta Description — length (150-160 chars), keyword, CTA, uniqueness, accuracy, compelling copy; score /10 and recommend an optimized description
4. Audit Header Structure — single H1, H1 keyword, logical hierarchy, H2 keyword coverage, no skipped levels, descriptive headers; score /10 and recommend changes.
5. Audit On-Page Content Structure — word count, reading level, formatting, content-elements checklist, and structural gaps. This is a structural pass, not a quality verdict — route depth/E-E-A-T scoring to content-quality-auditor.
6. Audit Keyword Usage — primary/secondary keyword placement across page elements, related terms, and density analysis.
7. Audit Internal Links — link count, anchor relevance, broken links, and recommended additions.
8. Audit Images — alt text, file names, sizes, formats, and lazy loading.
9. Audit Page-Level Tags — URL slug, canonical tag, and on-page schema presence. For deep crawl/indexing, Core Web Vitals, mobile rendering, and HTTPS/security, route to technical-seo-checker. ⚠ JS-injected JSON-LD caveat: a raw fetch (

   WebFetch

   /

   curl

   /

   onpage.py

   ) reads the server HTML and misses JSON-LD injected client-side by plugins (Yoast/RankMath/AIOSEO), so "no schema" from a raw fetch is a false negative — confirm in the rendered DOM (

   document.querySelectorAll('script[type="application/ld+json"]')

   ) or Google's Rich Results Test before reporting schema as missing.
10. CORE-EEAT Quick Scan — 17 on-page-relevant items from the 80-item CORE-EEAT benchmark, used to flag where a full quality audit is warranted (not a publish verdict). Full benchmark: CORE-EEAT Benchmark.
11. Generate Audit Summary — overall score, priority issues, quick wins, detailed recommendations, competitor comparison, and action checklist.

• No URL or page content is provided and none is inferable from context — ask for: (1) a URL to fetch, (2) pasted HTML/content, or (3) cancel.

• No target keyword — infer one via the Step 1 keyword fallback, label it Estimated, and proceed as

  DONE_WITH_CONCERNS

  .
• Missing optional tool data (search volume, competitor metrics) — mark the affected items N/A and proceed.
• A reported "ranking drop" for a single page — this is in scope: diagnose the page's structural causes. Do not redirect to rank-tracker (which only measures a drop), content-writer (which fixes decay), or performance-monitor (which alerts on future drops); recommend them only as a Next Best Skill once the diagnosis is done.

• Scoring Rubric — Detailed scoring criteria, weight distribution, and grade boundaries for on-page audits
• Audit Templates — Compact starter blocks for all 11 audit steps and the final summary
• Audit Example & Checklists — Full worked example and page-type checklists (blog, product, landing page)
• Bulk Audit Playbook — Batch workflow for 5+ URLs