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 Ad-Superpowers/ad-superpowers-plugin --skill gtm-server-side-tagging-guidegit clone --depth 1 https://github.com/Ad-Superpowers/ad-superpowers-pluginWrote 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/ad-superpowers/ad-superpowers-plugin/gtm-server-side-tagging-guide)<a href="https://agentmods.dev/skills/ad-superpowers/ad-superpowers-plugin/gtm-server-side-tagging-guide"><img src="https://agentmods.dev/badge/skills/ad-superpowers/ad-superpowers-plugin/gtm-server-side-tagging-guide/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/ad-superpowers/ad-superpowers-plugin/gtm-server-side-tagging-guide"><img src="https://agentmods.dev/badge/skills/ad-superpowers/ad-superpowers-plugin/gtm-server-side-tagging-guide.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 | $0.00117 | $0.05190 |
| Opus 5.5 | $0.00047 | $0.02076 |
| Sonnet 5.5 | $0.00023 | $0.01038 |
| Haiku 4.5 | $0.00012 | $0.00519 |
Grade A, and why
gtm-server-side-tagging-guide 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 562 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Server-Side GTM Guide
Server-side Google Tag Manager (sGTM) moves tag execution from the visitor's browser to a server you control. Instead of loading multiple third-party scripts on the client, your browser sends a single request to your server, which then fans out events to GA4, Meta, Google Ads, LinkedIn, TikTok, and any other destination. This improves page speed, data quality, privacy compliance, and resilience against ad blockers.
When to Use sGTM: Decision Framework
sGTM is not free and not simple. Use this decision tree to determine whether it is right for your situation.
sGTM Decision Tree
Is accurate conversion tracking critical to your business?
|
+-- No ---> Stay client-side. sGTM adds cost and complexity you don't need.
|
+-- Yes
|
Are ad blockers or ITP (Safari) causing >15% data loss?
|
+-- No
| |
| Do you need Google Enhanced Conversions or LinkedIn CAPI?
| (Note: Meta CAPI is now mandatory — implement via sGTM or backend code)
| |
| +-- No ---> Stay client-side. sGTM won't add enough value.
| +-- Yes --> Consider sGTM. Server-side is the cleanest way to implement these.
|
+-- Yes
|
Is your monthly ad spend >EUR 5,000?
|
+-- No ---> The cost of sGTM may exceed the value recovered. Start with
| Enhanced Conversions client-side as a cheaper alternative.
|
+-- Yes --> sGTM is strongly recommended. The data quality improvement
will pay for itself in better optimization.
Benefits vs. Costs
| Benefit | Impact | Who Benefits Most |
|---|---|---|
| First-party cookie control | Extends cookie lifetime from 7 days (ITP) to up to 400 days | Safari-heavy audiences (EU, mobile) |
| Ad blocker bypass | Recovers 15-30% of lost events | Sites with tech-savvy audiences |
| Faster page loads | Removes 3-8 third-party scripts from browser | All sites, especially mobile |
| Data enrichment | Add server-side data (CRM, margin, LTV) to events | E-commerce, SaaS |
| Single point of control | All vendor tags managed server-side | Multi-platform advertisers |
| Privacy compliance | PII never leaves your server | EU businesses under GDPR |
| Meta CAPI quality score | Score 7+ with redundant setup | All Meta advertisers (CAPI is now mandatory for signal quality) |
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.
- 1mo ago First seen · 562 lines · 117 tokens per session scan A 4997ce043797
gtm-server-side-tagging-guide is a skill published in the GitHub repository Ad-Superpowers/ad-superpowers-plugin (5 stars, last pushed 29d ago), licensed MIT. It adds 117 tokens to every session and 5,190 once invoked, about $0.0005 per session on Opus 5.5. 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 2026-09-11.
Other skills, from other repositories
analytics
Growth analytics authority — GA4 event tracking, conversion funnels, attribution models, cohort analysis, A/B testing, Supabase analytics queries, and revenue reporting patterns.
creative-generate
A workflow for creating advertising images and banners from a strategy brief. It separates the main visual artwork from the accurately typeset text and produces variants for display or social formats.
cro-optimizer
CRO specialist that pulls live analytics data via the Humblytics MCP, analyzes conversion funnels, identifies drop-off points, and generates prioritized A/B test hypotheses. Use when analyzing conversion rates, diagnosing funnel leaks, optimizing signup flows, or creating test roadmaps. Triggers: CRO, conversion rate…
learn
Save a marketing diagnosis insight to the pro-diagnosis knowledge base so it is applied in future operations across all platforms. Use when the user runs /learn, explicitly teaches the agent a marketing insight, corrects the agent's analysis, or asks to remember/record an operational learning for next time. Also use…
lead-form-create
Create a Meta Instant Form (Lead Ad form) through a one-question-at-a-time interview. Use when the user asks to create a lead form, Instant Form, CV form, or similar. The agent collects required parameters via a guided dialogue, confirms, then calls metaadsleadformscreate. Also use when the user asks in Japanese…
ai-hive-simulate-dn-samuel
A research and content-planning workflow that studies DN-Samuel's public material and turns its general methods into original work using your own facts and experience. It can also organise authorised documents into a source-linked reference library.