first-party-data-strategy

first-party-data-strategy is a skill for Claude Code from Ad-Superpowers/ad-superpowers-plugin. It costs 97 tokens per session (4,402 once invoked), scanned A, original, MIT.

A guide to collecting and using customer data directly through your own website or systems, while handling privacy restrictions and consent. It covers server-side tracking, the Conversions API, Consent Mode, cookieless measurement, and customer data platforms.

In plain words
What is it for?
Planning first-party data collection, setting up server-side tracking, handling GDPR consent, preparing for fewer third-party cookies, and improving conversion measurement.
Why use it?
It helps maintain advertising measurement and targeting when browsers, mobile systems, and privacy rules limit tracking signals.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the ad-superpowers plugin — 17 skills, 35 commands, 5 agents, 1 MCP server shipped together

Good fit Planning first-party data collection, setting up server-side tracking, handling GDPR consent, preparing for fewer third-party cookies, and improving conversion measurement.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ad-superpowers/ad-superpowers-plugin/first-party-data-strategy
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.

Any agent
npx skills add Ad-Superpowers/ad-superpowers-plugin --skill first-party-data-strategy
Clone the repo
git clone --depth 1 https://github.com/Ad-Superpowers/ad-superpowers-plugin

Made for: Claude Code.

Or install ad-superpowers, the plugin that ships this one along with the rest of its 17 skills, 35 commands, 5 agents, 1 MCP server.

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.

agentmods badge for first-party-data-strategy

README.md
[![agentmods](https://agentmods.dev/badge/skills/ad-superpowers/ad-superpowers-plugin/first-party-data-strategy.svg)](https://agentmods.dev/skills/ad-superpowers/ad-superpowers-plugin/first-party-data-strategy)
Your own site
<a href="https://agentmods.dev/skills/ad-superpowers/ad-superpowers-plugin/first-party-data-strategy"><img src="https://agentmods.dev/badge/skills/ad-superpowers/ad-superpowers-plugin/first-party-data-strategy.svg" alt="Measured on agentmods" height="20"></a>
Per session 97 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,402 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00097 $0.04402
Opus 5 $0.00048 $0.02201
Sonnet 5 $0.00019 $0.00880
Haiku 4.5 $0.00010 $0.00440

Measured 7d ago against content hash 2cc515d81ff3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

first-party-data-strategy 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 7d 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.

plugin/skills/first-party-data-strategy/SKILL.md · 514 lines

How it starts

The opening of the file, as written. The whole thing — 514 lines — stays where its author put it; the contents beside it link to each section on GitHub.

First-Party Data Strategy Guide

Purpose

Help advertisers build a robust first-party data infrastructure that maintains measurement quality and targeting effectiveness in an increasingly privacy-restricted advertising landscape.

When to Use This Skill

Invoke when user mentions:

  • First-party data: "How do I collect first-party data?"
  • Server-side tracking: "Should I implement CAPI?"
  • Privacy compliance: "How do I handle GDPR tracking?"
  • Consent Mode: "What is Consent Mode V2?"
  • CDPs: "Do I need a Customer Data Platform?"
  • Cookieless: "How do I prepare for cookie deprecation?"
  • Signal loss: "My conversion tracking is getting worse"

Part 1: The Privacy Landscape (2025-2026)

Current State of Digital Advertising Privacy

Change Status Impact
iOS App Tracking Transparency Active (since 2021) 40-60% signal loss on mobile
GDPR Consent Requirements Active ~50% opt-in rates in EU
Chrome 3rd Party Cookie Deprecation Active (phasing out 2025-2026) Major ongoing impact — not a future risk
Meta Aggregated Event Measurement Active Limited to 8 priority events
Google Privacy Sandbox Deployed Topics API, Protected Audiences replacing cookie-based targeting

Cookie deprecation is happening now, not in the future. Chrome began restricting third-party cookies in 2024 and is continuing the phase-out through 2025-2026. Safari and Firefox have blocked third-party cookies for years. The practical impact on tracking is already visible in attribution gaps. First-party data strategy is not preparation for a future change — it is the fix for a current problem.

Signal Loss by Region

Region Cookie Consent Rate Mobile Opt-in Rate Total Signal Loss
EU (GDPR) 45-55% 25-35% 50-65%
UK 50-60% 30-40% 45-55%
US (No federal law) 75-85% 35-45% 25-35%
California (CCPA) 65-75% 35-45% 35-45%

Read the full file on GitHub · 514 lines

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.

  1. 7d ago First seen · 514 lines · 97 tokens per session scan A 2cc515d81ff3

Subscribe to this mod's changes

first-party-data-strategy is a skill published in the GitHub repository Ad-Superpowers/ad-superpowers-plugin (5 stars, last pushed 9d ago), licensed MIT. It adds 97 tokens to every session and 4,402 once invoked, about $0.0005 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.