global-privacy-control

global-privacy-control is a skill for Claude Code from mukul975/Privacy-Data-Protection-Skills. It costs 73 tokens per session (1,926 once invoked), scanned A, original, Apache-2.0.

A guide to Global Privacy Control (GPC), a browser signal that tells a website a person wants to opt out of the sale or sharing of personal information. It explains how websites can detect this signal in requests and JavaScript.

In plain words
What is it for?
Reading GPC signals on the server or in the browser, applying opt-out requests, and mapping the behavior to state privacy laws.
Why use it?
It removes the need to rely only on a separate opt-out form and helps meet privacy requirements in states such as California.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: positional $N argument.

Part of the consent-management-skills plugin — 14 skills shipped together

Good fit Reading GPC signals on the server or in the browser, applying opt-out requests, and mapping the behavior to state privacy laws.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mukul975/privacy-data-protection-skills/global-privacy-control
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 mukul975/Privacy-Data-Protection-Skills --skill global-privacy-control
Clone the repo
git clone --depth 1 https://github.com/mukul975/Privacy-Data-Protection-Skills

Made for: Claude Code.

Or install consent-management-skills, the plugin that ships this one along with the rest of its 14 skills.

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 global-privacy-control

README.md
[![agentmods](https://agentmods.dev/badge/skills/mukul975/privacy-data-protection-skills/global-privacy-control/github.svg)](https://agentmods.dev/skills/mukul975/privacy-data-protection-skills/global-privacy-control)
Your own site
<a href="https://agentmods.dev/skills/mukul975/privacy-data-protection-skills/global-privacy-control"><img src="https://agentmods.dev/badge/skills/mukul975/privacy-data-protection-skills/global-privacy-control/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.

agentmods 80×15 button for global-privacy-control

Your own site · 80×15
<a href="https://agentmods.dev/skills/mukul975/privacy-data-protection-skills/global-privacy-control"><img src="https://agentmods.dev/badge/skills/mukul975/privacy-data-protection-skills/global-privacy-control.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 73 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,926 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 $0.00073 $0.01926
Opus 5 $0.00036 $0.00963
Sonnet 5 $0.00015 $0.00385
Haiku 4.5 $0.00007 $0.00193

Measured 13d ago against content hash ca898027b878, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

global-privacy-control 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 13d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/process.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

plugins/consent-management-skills/skills/global-privacy-control/SKILL.md · 157 lines

How it starts

The opening of the file, as written. The whole thing — 157 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Implementing Global Privacy Control (GPC)

Overview

Global Privacy Control (GPC) is a browser-level signal that communicates a user's privacy preference to opt out of the sale or sharing of their personal information. The GPC specification defines both an HTTP header (Sec-GPC: 1) and a JavaScript API (navigator.globalPrivacyControl) for transmitting this signal.

Under California Privacy Rights Act (CPRA) Section 1798.135(e), businesses must treat GPC signals as valid opt-out requests. The California Attorney General confirmed this enforcement position in the Sephora settlement (August 2022, $1.2 million fine), which was the first enforcement action involving GPC signals.

California — CPRA (effective January 1, 2023)

  • Section 1798.135(e): A business that collects consumers' personal information shall treat the consumer's use of an opt-out preference signal as a valid request to opt out of sale/sharing under Section 1798.120.
  • AG Regulation 11 CCR 7025(b): If a business collects personal information from consumers online, the business shall treat an opt-out preference signal as a valid request to opt-out of sale/sharing for that browser or device and any consumer profile associated with that browser or device.
  • Sephora Settlement (August 2022): California AG fined Sephora $1.2 million for failing to honor GPC signals, among other violations.

Colorado — Colorado Privacy Act (CPA, effective July 1, 2024)

  • Section 6-1-1306(1)(a)(IV)(A): Consumers may exercise the right to opt out through an opt-out preference signal sent by a platform, technology, or mechanism on behalf of the consumer, to the extent technically feasible.
  • CPA Rules 4.6: Controllers must recognize universal opt-out mechanisms by July 1, 2024.

Connecticut — Connecticut Data Privacy Act (CTDPA, effective July 1, 2023)

  • Section 42-520(b)(5): Beginning January 1, 2025, controllers must recognize universal opt-out mechanisms for the sale of personal data and targeted advertising.

Read the full file on GitHub · 157 lines

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 13d ago First seen · 157 lines · 73 tokens per session scan A ca898027b878

Subscribe to this mod's changes

global-privacy-control is a skill published in the GitHub repository mukul975/Privacy-Data-Protection-Skills (272 stars, last pushed 6mo ago), licensed Apache-2.0. It adds 73 tokens to every session and 1,926 once invoked, about $0.0004 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 2026-08-30.

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