Blog Analyzer -- Quality Audit & Scoring

Scores blog posts on a 0-100 scale across 5 categories and provides prioritized improvement recommendations. Includes AI content detection analysis. Works with local files or published URLs.

Reference documents:

• references/quality-scoring.md -- full scoring checklist
• references/eeat-signals.md -- E-E-A-T evaluation criteria

Input Handling

• Local file: Read the file directly
• URL: Fetch with WebFetch, extract content
• Directory: Scan for blog files, audit all (batch mode)
• Flags: --format json|table, --batch, --sort score

Scoring Process

Step 1: Content Extraction

Read the blog post and extract:

• Frontmatter (title, description, date, lastUpdated, author, tags)
• Heading structure (H1, H2, H3 with hierarchy)
• Paragraph count and word counts per paragraph
• Statistics (any number claims with or without sources)
• Images (count, alt text presence, format)
• Charts/SVGs (count, type diversity)
• Links (internal, external, broken)
• FAQ section presence
• Schema markup (types present)
• Meta tags (title, description, OG tags, twitter cards)
• Sentence lengths for burstiness analysis
• Vocabulary tokens for diversity scoring

Step 2: Score Each Category

Load references/quality-scoring.md for the full checklist. Score each:

Content Quality (30 points)

Check	Points	Pass Criteria
Depth/comprehensiveness	7	Covers topic thoroughly, no major gaps
Readability (Flesch 60-70)	7	Flesch 60-70 ideal, 55-75 acceptable; Grade 7-8; Gunning Fog 7-8
Originality/unique value markers	5	Original data, case studies, first-hand experience
Sentence & paragraph structure	4	Avg sentence 15-20 words, ≤25% over 20; paragraphs 40-80 words; H2 every 200-300 words
Engagement elements	4	TL;DR box, callouts, varied content blocks
Grammar/anti-pattern	3	Passive voice ≤10%, AI trigger words ≤5/1K, transition words 20-30%, clean prose

SEO Optimization (25 points)

Check	Points	Pass Criteria
Heading hierarchy with keywords	5	H1 -> H2 -> H3, no skips, keyword in 2-3 headings
Title tag (40-60 chars, keyword, power word)	4	Front-loaded keyword, positive sentiment
Keyword placement/density	4	Natural integration, no stuffing, in first 100 words
Internal linking (3-10 contextual)	4	Descriptive anchor text, bidirectional
URL structure	3	Short, keyword-rich, no stop words, lowercase
Meta description (150-160 chars, stat)	3	Fact-dense, includes one statistic
External linking (tier 1-3)	2	3-8 outbound links to authoritative sources

E-E-A-T Signals (15 points)

Check	Points	Pass Criteria
Author attribution (named, with bio)	4	Real name, credentials, not sales pitch
Source citations (tier 1-3, inline)	4	8+ unique stats, zero fabricated
Trust indicators	4	Contact page, about page, editorial policy
Experience signals	3	"When we tested...", original photos/data

Technical Elements (15 points)

Check	Points	Pass Criteria
Schema markup (3+ types = bonus)	4	BlogPosting + FAQ + Person minimum
Image optimization	3	AVIF/WebP, descriptive alt text, lazy except LCP
Structured data elements	2	Tables, lists, comparison blocks
Page speed signals	2	LCP < 2.5s, no render-blocking JS
Mobile-friendliness	2	Responsive, tap targets 48px+
OG/social meta tags	2	og:title, og:description, og:image, twitter:card

AI Citation Readiness (15 points)

Check	Points	Pass Criteria
Passage-level citability (120-180 words)	4	Self-contained sections with stat + source
Q&A formatted sections	3	60-70% of H2s as questions, FAQ present
Entity clarity	3	Unambiguous topic entity, consistent terminology
Content structure for extraction	3	Answer-first, tables with thead, comparison formats
AI crawler accessibility	2	SSR/SSG, no JS-gated content

Step 3: AI Content Detection

Analyze the post for AI-generated content risk:

Burstiness Score (sentence length variance):

• Calculate standard deviation of sentence lengths across the post
• Human writing: high variance (short punchy + long complex sentences)
• AI writing: low variance (consistently medium-length sentences)
• Score: 0-10 scale (10 = very human-like burstiness)

Known AI Phrase Detection -- flag occurrences of these 17 phrases:

1. "It's important to note"
2. "In today's digital landscape"
3. "Delve into"
4. "Navigating the complexities"
5. "Let's explore"
6. "Furthermore"
7. "In conclusion"
8. "It is worth mentioning"
9. "Embark on"
10. "Cutting-edge"
11. "Leverage" (as a verb, non-financial context)
12. "Game-changer"
13. "Revolutionize"
14. "Streamline"
15. "Harness the power"
16. "Dive deep"
17. "Unlock the potential"

Vocabulary Diversity (Type-Token Ratio):

• Calculate unique words / total words
• Human writing: TTR typically 0.4-0.6 for long-form
• AI writing: TTR often below 0.35 (repetitive vocabulary)

AI Content Risk Assessment:

• Flag if AI probability > 50% based on combined signals
• Provide specific passages that triggered the flag
• Recommend humanization: personal anecdotes, varied sentence rhythm, domain jargon

Step 4: Determine Rating

Score	Rating	Action
90-100	Exceptional	Publish as-is, flagship content
80-89	Strong	Minor polish, ready for publication
70-79	Acceptable	Targeted improvements needed
60-69	Below Standard	Significant rework required
< 60	Rewrite	Fundamental issues, start from outline

Step 5: Generate Report

Default output format (Markdown):

## Blog Quality Report: [Title]

**Score: [X]/100** -- [Rating]

### Score Breakdown
| Category | Score | Max | Notes |
|----------|-------|-----|-------|
| Content Quality | X | 30 | [1-line summary] |
| SEO Optimization | X | 25 | [1-line summary] |
| E-E-A-T Signals | X | 15 | [1-line summary] |
| Technical Elements | X | 15 | [1-line summary] |
| AI Citation Readiness | X | 15 | [1-line summary] |
| **Total** | **X** | **100** | |

### AI Content Risk
- **Burstiness score**: [X]/10 ([human-like / moderate / flat])
- **AI phrases detected**: [N] ([list phrases found])
- **Vocabulary diversity (TTR)**: [X] ([high / acceptable / low])
- **AI probability**: [X]% -- [No concern / Review recommended / High risk]
- **Flagged passages**: [quote specific flat or formulaic sections, if any]

### Issues Found

#### Critical (Must Fix)
- [ ] [Issue with specific location and fix]

#### High Priority
- [ ] [Issue with specific location and fix]

#### Medium Priority
- [ ] [Issue with specific location and fix]

#### Low Priority
- [ ] [Issue with specific location and fix]

### Quick Stats
- Word count: [N]
- Paragraphs: [N] (X over 150 words)
- H2 sections: [N] (X as questions, X with answer-first formatting)
- Statistics: [N] sourced / [N] unsourced
- Images: [N] (X with alt text, formats: ...)
- Charts: [N] (types: ...)
- Internal links: [N]
- External links: [N] (tier breakdown: ...)
- Schema types: [list]
- OG/social tags: [present/missing]

### Recommended Actions
1. [Most impactful fix -- Critical items first]
2. [Second most impactful]
3. [Third]

Run `/blog rewrite <file>` to apply these optimizations automatically.

Export Formats

Default: Markdown Report

Standard detailed report as shown above.

JSON Export (--format json)

Machine-readable output for integration with CI/CD or dashboards:

{
  "file": "post.md",
  "title": "...",
  "score": 78,
  "rating": "Acceptable",
  "categories": {
    "content_quality": { "score": 22, "max": 30 },
    "seo_optimization": { "score": 18, "max": 25 },
    "eeat_signals": { "score": 12, "max": 15 },
    "technical_elements": { "score": 13, "max": 15 },
    "ai_citation_readiness": { "score": 13, "max": 15 }
  },
  "ai_detection": {
    "burstiness": 6.2,
    "ai_phrases_found": ["Furthermore", "Let's explore"],
    "ttr": 0.44,
    "ai_probability": 32
  },
  "issues": {
    "critical": [],
    "high": [],
    "medium": [],
    "low": []
  }
}

Table Export (--format table)

Compact summary for quick review:

File            | Score | Rating     | Content | SEO | EEAT | Tech | AI-Ready | AI Risk
post.md         |    78 | Acceptable |   22/30 | 18/25 | 12/15 | 13/15 |    13/15 |    32%

Batch Mode

When given a directory or --batch flag, scan for blog files and produce a summary table. Use --sort score to order by score (ascending by default).

## Blog Audit Summary: [N] Posts Analyzed

| File | Score | Rating | Content | SEO | EEAT | Tech | AI-Ready | AI Risk | Top Issue |
|------|-------|--------|---------|-----|------|------|----------|---------|-----------|
| post-1.md | 85 | Strong | 26/30 | 20/25 | 13/15 | 14/15 | 12/15 | 18% | Missing OG tags |
| post-2.md | 42 | Rewrite | 10/30 | 8/25 | 5/15 | 9/15 | 10/15 | 71% | 12 fabricated stats |
| post-3.md | 71 | Acceptable | 20/30 | 16/25 | 10/15 | 12/15 | 13/15 | 25% | No answer-first |

### Priority Queue (Lowest Scoring First)
1. post-2.md (42) -- Full rewrite needed, high AI content risk
2. post-3.md (71) -- Answer-first formatting + stats needed
3. post-1.md (85) -- Add OG tags, minor polish

Run `/blog rewrite <file>` on each, starting from lowest score.