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.
npx skills add marketingskills/seo --skill competitor-serp-monitorgit clone --depth 1 https://github.com/marketingskills/seoWrote 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.
[](https://agentmods.dev/skills/marketingskills/seo/competitor-serp-monitor)<a href="https://agentmods.dev/skills/marketingskills/seo/competitor-serp-monitor"><img src="https://agentmods.dev/badge/skills/marketingskills/seo/competitor-serp-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.
<a href="https://agentmods.dev/skills/marketingskills/seo/competitor-serp-monitor"><img src="https://agentmods.dev/badge/skills/marketingskills/seo/competitor-serp-monitor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00036 | $0.00272 |
| Opus 5 | $0.00018 | $0.00136 |
| Sonnet 5 | $0.00007 | $0.00054 |
| Haiku 4.5 | $0.00004 | $0.00027 |
Grade A, and why
competitor-serp-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.
What it actually says
Competitor SERP Monitor
Overview
Monitor a set of competitor domains for changes in their organic search presence: new pages appearing in top positions, ranking shifts, SERP feature acquisition or loss, and content strategy changes.
Inputs
- List of competitor domains to monitor
- Optional: shared keyword list or topic cluster
- Check frequency (default: weekly)
Workflow
- Define the competitor set and shared keywords or topics.
- For each keyword, fetch the current SERP and record:
- Which competitor domains appear and at what rank
- SERP features (featured snippets, PAAs, video, images)
- New URLs from competitors (not seen in previous check)
- Compare against the prior SERP snapshot.
- Flag changes: new competitor entries, rank improvements, SERP feature gains.
- Analyze new competitor content for angle, format, depth, and entities covered.
- Surface threats (competitor gaining on your positions) and opportunities (competitor losing ground).
Output
Competitor movement report with new pages, rank changes, SERP feature shifts, and content analysis.
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 · 33 lines · 36 tokens per session scan A f6650bebd010
competitor-serp-monitor is a skill published in the GitHub repository marketingskills/seo (3 stars, last pushed 1mo ago), licensed MIT. It adds 36 tokens to every session and 272 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.
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