---
name: seo-technical-audit
description: "Technical SEO auditor for crawlability fundamentals. Triggers: robots.txt, sitemap validation, crawlability, indexing check, technical SEO."
allowed-tools: mcp__firecrawl__*, mcp__perplexity__*, mcp__notion__*
---

# SEO Technical Audit

## Purpose

Analyze crawlability fundamentals: robots.txt rules, XML sitemap structure, and URL accessibility. Identify issues blocking search engine crawlers.

## Core Capabilities

1. **Robots.txt Analysis** - Parse rules, check blocked resources
2. **Sitemap Validation** - Verify XML structure, URL limits, dates
3. **URL Accessibility** - Check HTTP status, redirects, broken links

## MCP Tool Usage

### Firecrawl for Page Data
```
mcp__firecrawl__scrape: Fetch robots.txt and sitemap content
mcp__firecrawl__crawl: Check multiple URLs accessibility
```

### Perplexity for Best Practices
```
mcp__perplexity__search: Research current SEO recommendations
```

## Workflow

### 1. Robots.txt Check
1. Fetch `[domain]/robots.txt` using Firecrawl
2. Parse User-agent rules and Disallow patterns
3. Identify blocked resources (CSS, JS, images)
4. Check for Sitemap declarations
5. Report critical issues

### 2. Sitemap Validation
1. Locate sitemap (from robots.txt or `/sitemap.xml`)
2. Validate XML syntax
3. Check URL count (max 50,000)
4. Verify lastmod date formats
5. For sitemap index: parse child sitemaps

### 3. URL Accessibility Sampling
1. Extract URLs from sitemap
2. Sample 50-100 URLs for large sites
3. Check HTTP status codes
4. Identify redirects and broken links
5. Report 4xx/5xx errors

## Output Format

```markdown
## Technical SEO Audit: [domain]

### Robots.txt Analysis
- Status: [Valid/Invalid/Missing]
- Sitemap declared: [Yes/No]
- Critical blocks: [List]

### Sitemap Validation
- URLs found: [count]
- Syntax: [Valid/Errors]
- Issues: [List]

### URL Accessibility (sampled)
- Checked: [count] URLs
- Success (2xx): [count]
- Redirects (3xx): [count]
- Errors (4xx/5xx): [count]

### Recommendations
1. [Priority fixes]
```

## Common Issues

| Issue | Impact | Fix |
|-------|--------|-----|
| No sitemap in robots.txt | Medium | Add `Sitemap:` directive |
| Blocking CSS/JS | High | Allow Googlebot access |
| 404s in sitemap | High | Remove or fix URLs |
| Missing lastmod | Low | Add dates for freshness signals |

## Limitations

- Cannot access password-protected sitemaps
- Large sitemaps (10,000+ URLs) require sampling
- Does not check render-blocking issues (use Core Web Vitals skill)

## Notion Output (Required)

All audit reports MUST be saved to OurDigital SEO Audit Log:
- **Database ID**: `2c8581e5-8a1e-8035-880b-e38cefc2f3ef`
- **Properties**: Issue (title), Site (url), Category, Priority, Found Date, Audit ID
- **Language**: Korean with English technical terms
- **Audit ID Format**: [TYPE]-YYYYMMDD-NNN