SEO Monitor API: Score Tracking with Webhooks and Slack Alerts

SEO monitoring is the practice of automatically auditing a URL on a recurring schedule and alerting you when the score changes significantly. Without monitoring, a broken meta tag, a removed H1, or a slow server after a deploy can sit undetected for days — long enough for Google to notice and adjust your rankings.

SEO Score API is a REST API that monitors any URL every 6 hours and emails you when the score drops or rises by 5+ points, giving you a real-time quality gate on your site's SEO health.

Why Does SEO Monitoring Matter?

SEO monitoring matters because SEO problems are almost always introduced by changes — deploys, CMS updates, plugin installs, or CDN configuration changes. Common scenarios that monitoring catches:

• A developer deploys a new page template that strips the meta description
• A CMS update removes the canonical tag site-wide
• A CDN misconfiguration causes pages to load in 4+ seconds
• An OG image URL breaks after a media library migration

Each of these would lower your SEO score by 10–30 points within hours. With monitoring, you know the same day it happens.

How Does SEO Score Monitoring Work?

SEO Score monitoring works by storing the URLs you want to watch, auditing each one automatically every 6 hours, comparing the new score to the previous score, and sending an email alert if the difference is 5 or more points.

The full cycle:

1. You register a URL via POST /monitors
2. The API audits it immediately to establish a baseline score
3. Every 6 hours, the API re-audits the URL
4. If the score changes by ±5 points, you receive an email with the delta and a list of what changed

How Do You Set Up SEO Monitoring?

You set up SEO monitoring by making a POST request to the monitors endpoint with your URL and API key.

curl -X POST https://seoscoreapi.com/monitors \
  -H "X-API-Key: your_api_key" \
  -H "Content-Type: application/json" \
  -d '{"url": "https://yoursite.com"}'

from seoscoreapi import add_monitor

result = add_monitor("https://yoursite.com", api_key="your_key")
print(f"Monitoring started. Baseline score: {result['score']}")

List your active monitors:

curl https://seoscoreapi.com/monitors \
  -H "X-API-Key: your_api_key"

What Triggers a Monitoring Alert?

A monitoring alert is triggered when the score for a monitored URL changes by 5 or more points between audit cycles. Alerts fire for both drops and improvements.

The alert email includes:

1. The URL that changed
2. The previous score and new score
3. The point delta (e.g., −18 points)
4. A list of checks that changed status since the last audit

How Many URLs Can You Monitor Per Plan?

Monitoring is not available on the free tier.

Which URLs Should You Monitor?

You should monitor your highest-value URLs first — pages that drive traffic, generate leads, or support paid campaigns. Recommended starting points:

1. Homepage — highest-authority page, most vulnerable to template changes
2. Top 5 organic traffic pages — most likely to affect revenue if rankings drop
3. Product or service landing pages — especially if you run paid search to them
4. Any page recently launched or redesigned

How Is SEO Monitoring Different from Google Search Console?

SEO monitoring via API is different from Google Search Console in timing and scope. Search Console reports what Google has already indexed — it reflects the past. Score monitoring catches problems in real time, before Google re-crawls the affected page.

Key differences:

• Timing: API monitoring alerts within 6 hours; Search Console data lags 1–7 days
• Scope: API monitoring checks 54+ technical factors; Search Console focuses on crawl errors and search performance
• Action: API monitoring tells you exactly which check failed; Search Console tells you traffic dropped

Frequently Asked Questions

How often does SEO monitoring run?

SEO monitoring audits each registered URL every 6 hours. You will receive an alert within 6 hours of a score-changing event, such as a deploy that removes a meta tag or a server slowdown that degrades your performance score.

What plan do I need for SEO monitoring?

SEO monitoring requires a paid plan. The Starter plan ($5/month) includes 5 monitored URLs. Basic ($15/month) includes 10, Pro ($39/month) includes 25, and Ultra ($99/month) includes 50. The free tier does not include monitoring.

Can I monitor competitor websites?

Yes. The API monitors any publicly accessible URL, including competitor pages. Monitoring a competitor's key landing pages can alert you when they make significant SEO changes.

What happens if a monitored URL goes down?

If a monitored URL returns a 4xx or 5xx error, the audit records a failed response. A server error or 404 will cause a significant score drop and trigger an alert. The alert email will note the response code so you can distinguish an SEO regression from an availability issue.

Does monitoring count against my audit quota?

Yes, each scheduled monitoring audit counts against your monthly audit quota. On the Starter plan with 5 monitors, the system runs approximately 600 monitoring audits per month. Plan your monitor count relative to your monthly quota.