blog-rewrite

name	blog-rewrite
description	Rewrite and optimize existing blog posts for Google SEO (May 2026 Core Update, March 2026 core/spam context, June 2026 spam context, E-E-A-T) and AI citation visibility as one SEO discipline. Full rewrite for both Google rankings AND AI citations. For AI-citation-only audit (no Google work), use blog-geo instead. Replaces fabricated statistics with sourced data, applies answer-first formatting, adds Pixabay/Unsplash images, generates built-in SVG charts, validates Article-priority schema, performs AI content detection, adds citation capsules and information gain markers, and updates freshness signals. Works with any blog format (MDX, markdown, HTML). Use when user says "rewrite blog", "optimize blog", "update blog", "improve blog", "fix blog", "refresh blog post", "blog optimization".
user-invokable	true
argument-hint	<file-path>
license	MIT

Blog Rewriter: Optimize Existing Posts

Rewrites and optimizes existing blog posts for dual ranking: Google search and AI citation platforms. Preserves the author's voice while applying the 6 pillars of optimization.

Key references:

• skills/blog/references/quality-scoring.md - 5-category scoring (Content 30, SEO 25, E-E-A-T 15, Technical 15, AI Citation 15)
• skills/blog/references/eeat-signals.md - Experience, expertise, authority, trust markers
• skills/blog/references/internal-linking.md - Linking strategy and anchor text rules
• skills/blog/references/visual-media.md - Image sourcing and chart styling
• skills/blog/references/synthesis-contract.md - 6 LAWs for re-citation hygiene during rewrite (v1.8.0; cross-skill ref lives in the orchestrator's references dir)
• skills/blog/references/research-quality.md - cross-source clustering for replacement-statistic research (v1.8.0)

Cross-reference

For 21 evidence-led optimization prompts (AI-detector test, CTR audit, schema, PAA rewording, technical audit, ChatGPT visibility) directly applicable to rewrite work, see /blog flow optimize.

Workflow

Phase 1: Audit (Read-Only)

1. Read the blog post - Detect format (MDX, markdown, HTML)
2. Run the quality checklist against skills/blog/references/quality-scoring.md:
   • Count fabricated vs sourced statistics
   • Check answer-first formatting (H2 -> stat in first sentence?)
   • Count images and charts (type diversity?)
   • Measure paragraph lengths (any > 150 words?)
   • Check heading hierarchy (H1 -> H2 -> H3, no skips?)
   • Check schema presence and validity, prioritizing Article/BlogPosting, Person, Organization, and BreadcrumbList; FAQPage is optional entity markup only
   • Check freshness signals (lastUpdated, dateModified)
   • Assess self-promotion level
   • Evaluate citation tier quality
3. AI content detection scan:
   • Burstiness score - Measure sentence length variance across the post. Low variance (most sentences within 3-5 words of each other) is a strong AI signal. Calculate: standard deviation of sentence word counts. Target SD > 6.
   • Known AI phrase scan - Check for these high-frequency AI phrases:
     • "in today's digital landscape", "it's important to note", "dive into"
     • "game-changer", "navigate the landscape", "revolutionize", "seamlessly"
     • "cutting-edge", "harness the power of", "leverage" (as verb)
     • "delve", "crucial", "elevate", "foster", "landscape" (overused)
     • "multifaceted", "robust", "tapestry", "embark"
     • Full list in agents/blog-writer.md
   • Vocabulary diversity - Calculate Type-Token Ratio (TTR): unique words / total words. Low TTR (< 0.40) suggests AI-generated repetitive phrasing. Target TTR > 0.50 for natural prose.
   • AI content percentage estimate - Based on burstiness, phrase density, and TTR, estimate what percentage of the content reads as AI-generated (0-100%). Report as: "AI content estimate: ~X%"
   • Second-order structural reflex scan (v1.8.0) - The first-order checks above are vocabulary-level. The second-order pass catches what survives them: structural and rhythmic tics LLMs default to after the obvious words are replaced. Run against skills/blog/references/ai-slop-detection.md. Flag at minimum:
     • Question-cadence H2s above 70% of headings
     • Three or more "Here..." paragraph openers
     • Three-clause sentence rhythm above 50% in any 200-word window
     • More than 2 hedge words ("may," "often," "typically," "generally") in any 20-word span
     • Symmetric-list bloat (list-item word-count SD below 5)

Wait for user approval before proceeding.

Phase 2: Research

1. Identify the blog's core topic from existing content
2. Find replacement statistics for any fabricated/unsourced data:
   • Search: [topic] study 2025 2026 data statistics
   • Target tier 1-3 sources only
3. Find images if post has fewer than 3:
   • Prefer original screenshots, product visuals, diagrams, or data graphics when available
   • For stock, use official provider APIs such as Openverse, Unsplash, Pexels, or Pixabay so license, creator, source URL, and download URL are captured
   • Download approved assets locally, store attribution, and reject javascript:, data:, and file: URLs
   • If blog-image is available, offer AI generation for missing or insufficient images and record the selected model ID
4. Plan charts if post has fewer than 2:
   • Identify data suitable for visualization
   • Select diverse chart types

Phase 3: Chart Generation (Built-In)

When the post needs more visual elements, invoke the blog-chart sub-skill:

1. Select chart type using the diversity rule (no repeated types per post)
2. Pass: chart type, title, data values, source, platform format
3. Embed the returned SVG directly within a <figure> wrapper
4. Target 2-4 charts per 2,000-word post

See skills/blog/references/visual-media.md for chart type selection and styling rules.

Phase 4: Content Rewrite

Apply changes in this order:

4a. Preserve What Works

• Keep the author's voice and unique perspective
• Preserve original insights and first-hand experience
• Keep existing quality images and charts
• Maintain internal links

4b. Fix Frontmatter

• Add lastUpdated: "YYYY-MM-DD" (today's date)
• Keep original date unchanged
• Fix meta description: fact-dense, 150-160 chars, includes 1 statistic
• Add coverImage + coverImageAlt + ogImage if missing
  • Search Pixabay/Unsplash/Pexels for wide hero image (1200x630)
  • Or generate custom SVG cover via blog-chart (text-on-gradient with key stat)
  • Or generate custom AI image via blog-image sub-skill when available; record the model ID
• Verify tags/categories are appropriate

4c. Apply Answer-First Formatting

Every H2 section MUST open with a 40-60 word paragraph containing:

• At least one specific statistic with source attribution
• A direct answer to the heading's implicit question

4d. Replace Fabricated Statistics

• Search for patterns: "X% of...", "X out of Y...", unsourced claims
• Replace with real data from tier 1-3 sources
• Always include the full FLOW evidence triple: year anchor in prose, inline citation with publisher + document title/report name, and a source block entry with full URL + retrieval date

4e. Improve Headings

• Convert statement headings to questions where natural (60-70% target)
• Keep 2-3 statement headings for variety
• Ensure keyword appears in 2-3 headings naturally

4f. Fix Paragraph Length

• Split any paragraph > 150 words
• Target 40-80 words per paragraph
• Ensure each paragraph starts with its most important sentence

4g. Add Visual Elements

• Embed new images after H2 headings, spaced evenly
• Embed charts within relevant sections
• If blog-image is available: generate custom images for sections lacking good stock matches, prefer the current image model registry, and record the model ID
• Adapt embed format to detected platform (MDX vs markdown vs HTML)

4h. Add Video Embeds

If the post lacks YouTube video embeds:

• Search 2-3 relevant videos using quality criteria from skills/blog/references/video-embeds.md
• Embed using platform-appropriate format (srcdoc lazy loading)
• Place: 1 after introduction, 1-2 in mid-article sections
• Include noscript fallback for AI crawlers

4i. Add/Improve FAQ

• If the query set warrants it and no FAQ exists, add one (3-5 questions)
• If FAQ exists, ensure answers are 40-60 words with verified statistics
• FAQPage is optional entity markup only. Google FAQ rich results have been limited primarily to well-known, authoritative government and health sites since the 2023 guidance, so do not make FAQPage a core Google rich-result gate.

4j. Reduce Self-Promotion

• Max 1 brand mention (author bio context only)
• Remove "At [Company], we..." patterns
• Convert promotional sections to educational content

4k. Citation Capsule Injection

For each H2 section, generate (or improve existing) a citation capsule:

• 40-60 word self-contained passage per H2
• Contains: one specific claim + one data point + source attribution
• Written in a declarative style so an AI system could extract and quote it directly
• Placed naturally within the section body, not as a separate callout

Example:

According to a 2026 Gartner study, 58% of enterprise buyers now consult AI
assistants before contacting a vendor ([Gartner](https://www.gartner.com), 2026).
This shift means B2B content must answer specific questions concisely enough
for AI systems to extract and cite in their responses.

Capsules map to the "AI Citation Readiness" category (15 points) in skills/blog/references/quality-scoring.md.

4l. Anti-AI-Detection Patterns

Apply these transformations to reduce AI-detectable writing patterns:

• Eliminate em dashes - Replace every U+2014 character with a comma, hyphen, colon, or period. Split sentences if needed. Em dashes are an AI writing tell.
• Replace flagged phrases - Swap every detected AI phrase (from the scan in Phase 1 step 3) with a natural alternative. Examples:
  • "it's important to note" -> "worth noting" or "keep in mind"
  • "in today's digital landscape" -> "right now" or "in [specific year]"
  • "leverage" -> "use", "apply", "take advantage of"
  • "delve" -> "look at", "explore", "dig into"
  • "robust" -> "strong", "solid", "reliable"
  • "crucial" -> "key", "essential", "critical" (or restructure the sentence)
• Vary sentence length deliberately - After rewriting, scan each paragraph. Inject short punchy sentences (5-10 words) between longer ones (18-25 words). Target: no more than 3 consecutive sentences within 5 words of each other's length.
• Inject rhetorical questions - Add at least one rhetorical question every 200-300 words to break up declarative monotony.
• Use contractions naturally - Replace formal constructions with contractions where they sound natural: "it is" -> "it's", "we have" -> "we've", "do not" -> "don't", "is not" -> "isn't".
• Include hedging language - Sprinkle first-person hedges that signal real experience: "in our experience", "we've found that", "from what we've seen", "this tends to", "it depends on".

4m. Summary Box (Key Takeaways)

If the post lacks a summary box, add one immediately after the introduction:

> **Key Takeaways**
> - [Core finding with statistic and source]
> - [Second key insight or recommendation]
> - [Third actionable takeaway]
> (3-5 bullets, 40-60 words combined. Self-contained - reader gets
> the core value without reading the full article.)

Default label is "Key Takeaways", but this is configurable per persona or brand voice (e.g., "The Bottom Line", "Quick Summary", "What You Need to Know").

If an existing TL;DR box is present, convert it to the bullet-point Key Takeaways format. Verify it meets the 40-60 word requirement and contains at least one statistic with source attribution.

4n. Information Gain Marker Injection

Review the post for original value and tag it:

• [ORIGINAL DATA] - Any proprietary data, survey results, experiments, or case study metrics the author collected first-hand
• [PERSONAL EXPERIENCE] - First-hand observations, lessons learned
• [UNIQUE INSIGHT] - Novel analysis, contrarian perspectives backed by data

If the post lacks original value markers:

• Ask the author for first-hand data or experience to include
• At minimum, add analytical insights that connect existing research in new ways
• Target: at least 2-3 markers per post

Use HTML comments (<!-- [ORIGINAL DATA] -->) or visible callouts depending on the post's style.

Phase 5: Verification

After rewriting, verify all quality gates pass:

Core Quality Gates

1. Every H2 opens with a statistic + source
2. No paragraph exceeds 150 words
3. Zero fabricated statistics
4. Heading hierarchy is clean
5. Article-priority schema present and valid; FAQPage only if useful as optional entity markup
6. Images have descriptive alt text
7. Cover image present in frontmatter (coverImage + ogImage)
8. If MDX: build the project to verify no compilation errors

New Element Verification

9. TL;DR box present after introduction (40-60 words, contains statistic)
10. At least 2-3 information gain markers present
11. Citation capsules in major H2 sections (40-60 words, self-contained)
12. Internal linking zones marked or actual links present (5-10 per 2,000 words)
13. No AI-detectable phrases remain from banned list

Burstiness and Naturalness Check

14. Sentence length variance: SD > 6 (mix of short and long sentences)
15. Contractions used naturally throughout
16. Rhetorical questions present (1 per 200-300 words)
17. AI content estimate reduced from audit baseline
18. Score improved across all 5 categories vs Phase 1 audit
19. YouTube video embeds present with lazy loading, aria-labels, and noscript fallback

Phase 6: Summary

## Blog Optimization Complete: [Title]

### Score Change
- Before: [X]/100 ([Rating])
  - Content Quality: [X]/30
  - SEO Optimization: [X]/25
  - E-E-A-T Signals: [X]/15
  - Technical Elements: [X]/15
  - AI Citation Readiness: [X]/15
- After: [Y]/100 ([Rating])
  - Content Quality: [Y]/30
  - SEO Optimization: [Y]/25
  - E-E-A-T Signals: [Y]/15
  - Technical Elements: [Y]/15
  - AI Citation Readiness: [Y]/15

### AI Detection
- Before: ~[X]% AI-detected content
- After: ~[Y]% AI-detected content
- Phrases replaced: [N]
- Burstiness improved: [before SD] -> [after SD]

### Cannibalization
- [Status: none found / flagged N posts / resolved]

### Changes Made
- [X] statistics replaced with sourced data
- [X] SVG charts added (types: ...)
- [X] images added from Pixabay/Unsplash
- Answer-first formatting applied to [N] H2 sections
- FAQ section updated with [N] questions; FAQPage emitted only as optional entity markup if appropriate
- TL;DR box: [added/updated]
- Information gain markers: [N] ([types])
- Citation capsules: [N] across H2 sections
- AI phrases replaced: [N]
- lastUpdated set to [date]
- Self-promotion reduced to [N] mentions

### Visual Elements
- Charts: [count] ([types])
- Images: [count]
- YouTube videos: [count] ([titles])

### Ready for
- `/blog analyze <file>` to verify final score
- Publishing / deploying

Phase 5.5: Delivery Contract Enforcement (v1.9.0)

Before presenting the rewritten draft, run the 5-gate delivery contract per skills/blog/references/blog-delivery-contract.md. The contract applies to rewrites the same way it applies to new posts: the user is never the first reviewer.

Steps:

1. Hero check: if the existing post already has a hero image referenced and still on disk, keep it. If the rewrite changed the topic substantially OR the hero is missing, regenerate via python3 scripts/generate_hero.py --topic "<new title>" --tags "<tags>" --out <folder>.
2. Re-render: run python3 scripts/blog_render.py --md <slug>.md --out-dir <folder> to refresh the .html and .pdf from the updated .md.
3. Reviewer dispatch: dispatch the blog-reviewer agent against the rendered .html. Threshold: score 90/100 or higher AND zero P0 issues.
4. Preflight: run python3 scripts/blog_preflight.py --draft <folder> --strict. Exit 0 = ship; exit 1 = block.
5. Iterate on failure: maximum 3 iterations. After the 3rd failure, STOP and present the diagnostic from <folder>/preflight-report.json.

Rewrites have a higher implicit threshold because the existing draft was presumably already published. Re-presenting something worse than the original is not acceptable. If the rewritten score is lower than the original score, that itself is a P0 condition.

Update Mode

When invoked as /blog update <file>, focus on freshness:

1. Update statistics to latest available data (2025-2026)
2. Add new developments since last update
3. Refresh images if older than 1 year
4. Update lastUpdated in frontmatter
5. Preserve the existing structure - minimize rewrites
6. Target: genuine freshness only. Replace stale statistics, add real new developments, and update lastUpdated/dateModified; do not rewrite to hit a percentage-change threshold.