SEO Performance Monitor

This drill creates an always-on monitoring system for programmatic SEO pages. It tracks indexation, rankings, organic traffic, CTR, and conversions at the individual page level and surfaces anomalies that need attention.

Input

• List of published page URLs and their target keywords (from keyword-matrix-builder output)
• Google Search Console access for the site
• Ahrefs API access
• PostHog tracking installed on all pages

Steps

1. Set up page-level tracking in PostHog

Using posthog-custom-events, configure events for each programmatic page:

• seo_page_viewed: fires on page load. Properties: page_url, target_keyword, category, modifier, referrer, utm_source
• seo_page_engaged: fires on scroll depth >50% OR time on page >30 seconds. Properties: same as above plus scroll_depth, time_on_page
• seo_page_converted: fires when the CTA is clicked or form is submitted. Properties: same as above plus conversion_type (form_submit, demo_book, signup)

Use PostHog autocapture for basic pageview tracking. Add custom events for engagement and conversion.

2. Build the SEO dashboard in PostHog

Using posthog-dashboards, create a dashboard with these panels:

• Total organic traffic: line chart, last 30 days, filtered to utm_source=google or referrer contains google.com
• Pages indexed vs total pages: number comparison. Pull indexed count from GSC API.
• Top 20 pages by organic traffic: table sorted by pageview count
• Conversion rate by page: table showing seo_page_converted / seo_page_viewed per URL
• Engagement rate: percentage of pageviews that triggered seo_page_engaged
• Traffic by category/modifier: breakdown chart showing which page groups drive the most traffic

3. Configure GSC data pull via n8n

Using n8n-workflow-basics and n8n-scheduling, create a daily workflow:

1. Pull search analytics from GSC using google-search-console-api:
   • Query: last 7 days, dimensions = [page, query], filtered to your programmatic page URL pattern
   • Extract: clicks, impressions, CTR, position per page per query
2. Pull indexation status using GSC URL Inspection API:
   • Sample 50 random pages from your published list each day (to stay within rate limits)
   • Log which pages are indexed, crawled-not-indexed, or not discovered
3. Store results: write to PostHog as custom events (seo_gsc_ranking, seo_gsc_indexation) so they appear on your dashboard
4. Alert on anomalies:
   • If indexation rate drops below 80%, send alert
   • If average position for any keyword moves >10 positions in a week, send alert
   • If total organic clicks drop >20% week-over-week, send alert

4. Configure Ahrefs rank tracking via n8n

Using ahrefs-rank-tracking, create a weekly n8n workflow:

1. Pull organic keywords for your domain filtered to programmatic page URLs
2. Compare current positions to last week's positions
3. Identify: keywords gained (new rankings), keywords improved (position up), keywords declined (position down), keywords lost (fell out of top 100)
4. Log gains/losses as PostHog events (seo_ranking_change)
5. Generate a weekly ranking summary: total keywords ranked, average position, movement trends

5. Build the conversion tracking funnel

Using posthog-custom-events, build a funnel:

seo_page_viewed -> seo_page_engaged -> seo_page_converted

Segment by: category, modifier, landing page URL, device type. Identify which page patterns convert best and which have engagement but no conversion (opportunity for CTA optimization).

6. Set up automated reporting

Using n8n-workflow-basics, create a weekly report workflow that:

1. Pulls the last 7 days of data from PostHog and GSC
2. Computes: total organic sessions, new pages indexed, average position change, total conversions, conversion rate
3. Compares to prior week and prior month
4. Formats as a summary and sends to Slack or email

Output

• Live PostHog dashboard showing all SEO metrics
• Daily GSC data sync with indexation and ranking alerts
• Weekly Ahrefs rank tracking with gain/loss reports
• Weekly automated performance summary
• Anomaly alerts for indexation drops, ranking changes, and traffic declines

Triggers

• Dashboard: always-on, updated in real-time by PostHog
• GSC sync: daily via n8n cron
• Ahrefs sync: weekly via n8n cron
• Reporting: weekly via n8n cron
• Alerts: triggered immediately when thresholds are breached