seo-audit-bot（SEO 审核机器人）

SEO Audit Bot

A comprehensive SEO auditing skill that analyzes any website and produces a detailed, actionable report.

What It Does

When a user provides a URL, this skill performs a full SEO audit covering:

1. Technical SEO — robots.txt, sitemap, HTTPS, mobile-friendliness, page speed signals
2. On-Page SEO — title tags, meta descriptions, headings, URL structure, internal linking
3. Content Analysis — word count, keyword density, readability, duplicate content signals
4. Performance — page load indicators, Core Web Vitals signals
5. Social & Sharing — Open Graph tags, Twitter Cards, structured data
6. Competitor Comparison (optional) — compare against a competitor URL

How to Use

Basic Audit

User says: "Audit the SEO of https://example.com"

Agent should:

1. Fetch the target URL using web_fetch
2. Fetch the robots.txt (/robots.txt)
3. Fetch the sitemap (/sitemap.xml or from robots.txt)
4. Analyze the HTML content for all SEO factors
5. Generate a structured report

Competitor Comparison

User says: "Compare SEO of https://example.com vs https://competitor.com"

Agent should:

1. Audit both URLs
2. Generate a side-by-side comparison
3. Highlight advantages and gaps

Audit Process

Step 1: Fetch the Page

web_fetch(url="<target_url>", maxChars=50000, extractMode="text")

Step 2: Check Technical Signals

• Fetch robots.txt → check if exists, what's blocked
• Fetch sitemap.xml → check if exists, last modified
• Check HTTPS redirect
• Check canonical tag presence

Step 3: Analyze On-Page Elements

Extract and evaluate:

• <title> — length (50-60 chars ideal), keyword presence
• <meta name="description"> — length (150-160 chars ideal), keyword presence
• <h1> — single h1, contains primary keyword
• <h2>–<h6> — proper hierarchy
• URL structure — short, descriptive, keyword-rich
• Image alt tags — descriptive, not keyword-stuffed
• Internal links — count, quality, anchor text
• External links — count, quality, nofollow usage

Step 4: Content Analysis

• Word count (minimum 300 for pages, 1000+ for blog posts)
• Keyword density (1-3% for primary keyword)
• Heading structure (logical hierarchy)
• Readability (sentence length, paragraph size)
• Duplicate content risk

Step 5: Performance Indicators

• Check for <meta name="viewport"> (mobile-friendly)
• Check for lazy loading on images
• Check for minified CSS/JS references
• Check for CDN usage
• Check for excessive inline styles

Step 6: Social & Schema

• Open Graph tags (og:title, og:description, og:image)
• Twitter Card tags
• JSON-LD structured data
• Schema.org markup

Step 7: Generate Report

Report Format

# SEO Audit Report: [URL]
Date: [date]

## Overall Score: XX/100

### 🔧 Technical SEO: XX/100
- ✅ HTTPS enabled
- ✅ robots.txt found
- ❌ No sitemap.xml found
- ✅ Mobile viewport configured
- ⚠️ Missing canonical tag

Recommendations:
1. Create and submit a sitemap.xml
2. Add canonical tags to prevent duplicate content

### 📄 On-Page SEO: XX/100
- ✅ Title tag (52 chars) — Good
- ⚠️ Meta description (180 chars) — Too long, aim for 150-160
- ❌ No H1 tag found
- ✅ URL structure is clean
- ⚠️ 3 images missing alt tags

Recommendations:
1. Add a clear H1 tag with primary keyword
2. Shorten meta description to 150-160 characters
3. Add alt tags to all images

### 📝 Content: XX/100
- Word count: 450 words
- Primary keyword density: 1.2%
- Heading structure: Proper H2/H3 hierarchy
- Readability: Good (avg 15 words/sentence)

Recommendations:
1. Expand content to 800+ words for better ranking potential

### ⚡ Performance: XX/100
- Viewport meta: ✅
- Lazy loading: ⚠️ Partial
- Minified assets: ✅
- CDN: ❌ Not detected

### 📱 Social & Schema: XX/100
- Open Graph: ✅ Complete
- Twitter Cards: ⚠️ Missing
- JSON-LD: ❌ Not found

Recommendations:
1. Add Twitter Card meta tags
2. Implement JSON-LD structured data for rich snippets

## 🎯 Priority Actions (Do These First)
1. [HIGH] Add H1 tag with primary keyword
2. [HIGH] Create sitemap.xml
3. [MEDIUM] Implement JSON-LD structured data
4. [LOW] Add Twitter Card tags

Scoring Rubric

Each section is scored 0-100:

Technical SEO (25% weight)

• HTTPS: 15 points
• robots.txt: 10 points
• sitemap.xml: 15 points
• Mobile viewport: 15 points
• Canonical tag: 10 points
• Clean URL structure: 10 points
• Page speed indicators: 15 points
• No broken links: 10 points

On-Page SEO (30% weight)

• Title tag (exists, length, keyword): 20 points
• Meta description (exists, length, keyword): 20 points
• H1 tag (exists, unique, keyword): 20 points
• Heading hierarchy: 10 points
• Image alt tags: 15 points
• Internal linking: 15 points

Content (25% weight)

• Word count: 25 points
• Keyword presence & density: 25 points
• Readability: 25 points
• Content structure: 25 points

Performance (10% weight)

• Mobile-friendly: 30 points
• Asset optimization: 30 points
• Loading indicators: 40 points

Social & Schema (10% weight)

• Open Graph: 40 points
• Twitter Cards: 30 points
• Structured data: 30 points

Overall Score = weighted average of all sections.

Tips for the Agent

1. Be specific — don't just say "improve SEO", say exactly what to change
2. Prioritize — label recommendations as HIGH/MEDIUM/LOW
3. Show before/after — when suggesting changes, show the current state and the ideal state
4. Be honest about limitations — you can't check page speed directly, only indicators
5. Offer follow-up — suggest re-audit after changes are made