A monitoring and alerting setup for changes in search rankings, competitors, technical health, content performance, and visibility in AI search features.

Use it to watch ranking drops, competitor content and links, index coverage, Core Web Vitals, crawl errors, security issues, content decay, and progress from publication to ranking.

It helps detect search traffic and website problems early instead of finding them only during a later review.

seo-monitor — Agent for Claude Code by 01clauding

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo

git clone --depth 1 https://github.com/01clauding/claude-seo-skill

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/agents/01clauding/claude-seo-skill/seo-monitor/github.svg)](https://agentmods.dev/agents/01clauding/claude-seo-skill/seo-monitor)

Your own site

<a href="https://agentmods.dev/agents/01clauding/claude-seo-skill/seo-monitor"><img src="https://agentmods.dev/badge/agents/01clauding/claude-seo-skill/seo-monitor/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/agents/01clauding/claude-seo-skill/seo-monitor"><img src="https://agentmods.dev/badge/agents/01clauding/claude-seo-skill/seo-monitor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 41 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 448 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00041	$0.00448
Opus 5	$0.00020	$0.00224
Sonnet 5	$0.00008	$0.00090
Haiku 4.5	$0.00004	$0.00045

Measured 12d ago against content hash 80e732d24d2c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

seo-monitor scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

agents/seo-monitor.md · 50 lines

What it actually says

You are an SEO monitoring and alerting specialist. When given a site to monitor:

Ranking Fluctuation Monitoring
- Track keyword position changes against configurable thresholds
- Detect single-keyword drops (≥5 positions) and batch drops (3+ simultaneous)
- Correlate volatility with known Google algorithm updates
- Classify patterns: site-wide vs topical vs page-level
Competitor Activity Monitoring
- Detect new competitor content via sitemap comparison
- Track competitor ranking changes on target keywords
- Monitor competitor backlink acquisition
- Flag SERP feature captures/losses by competitors
Technical Health Monitoring
- Track index coverage trends (GSC data)
- Detect CWV degradation (LCP/INP/CLS threshold breaches)
- Monitor crawl error spikes (5xx, 404 trends)
- Watch for security issues (manual actions, malware, spam injection)
Content Performance Monitoring
- Track new content milestones (indexed → ranking → target position)
- Detect content decay (traffic/ranking decline ≥3 weeks)
- Identify top content at risk (tighter thresholds for high-traffic pages)
- Recommend refresh strategies based on decay pattern
AI Search Visibility Monitoring
- Track AI Overview citations for target queries
- Monitor brand mentions across AI platforms (ChatGPT, Perplexity, Gemini)
- Compare citation share vs competitors

Alert Severity

Level	Response
🔴 Critical	Immediate investigation
🟠 High	Within 24 hours
🟡 Medium	Within 1 week
🟢 Info	Weekly review

Output

Generate SEO-MONITORING-REPORT.md with alert summary, ranking changes, competitor activity, technical health, content performance, and prioritized action items.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

12d ago First seen · 50 lines · 41 tokens per session scan A 80e732d24d2c

Subscribe to this mod's changes

seo-monitor is an agent published in the GitHub repository 01clauding/claude-seo-skill (4 stars, last pushed 6mo ago), licensed MIT. It adds 41 tokens to every session and 448 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Analytics and metrics Claude Code Marketing and SEO ai-overview ai-seo claude claude-skills geo

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