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 mukul975/Privacy-Data-Protection-Skills --skill cookie-lifetime-auditgit clone --depth 1 https://github.com/mukul975/Privacy-Data-Protection-SkillsWrote 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/mukul975/privacy-data-protection-skills/cookie-lifetime-audit)<a href="https://agentmods.dev/skills/mukul975/privacy-data-protection-skills/cookie-lifetime-audit"><img src="https://agentmods.dev/badge/skills/mukul975/privacy-data-protection-skills/cookie-lifetime-audit/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/mukul975/privacy-data-protection-skills/cookie-lifetime-audit"><img src="https://agentmods.dev/badge/skills/mukul975/privacy-data-protection-skills/cookie-lifetime-audit.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 | $0.00046 | $0.02493 |
| Opus 5.5 | $0.00018 | $0.00997 |
| Sonnet 5.5 | $0.00009 | $0.00499 |
| Haiku 4.5 | $0.00005 | $0.00249 |
Grade A, and why
cookie-lifetime-audit 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 — 186 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Auditing Cookie Lifetimes
Overview
Cookie lifetime is a critical compliance factor often overlooked in consent implementations. The CNIL recommends a maximum cookie lifetime of 13 months from the point of collection, after which consent must be renewed. The CJEU in Planet49 (Case C-673/17) established that cookie duration must be disclosed to users before consent is obtained. Additionally, browser-enforced restrictions — Safari's Intelligent Tracking Prevention (ITP), Firefox's Enhanced Tracking Protection (ETP), and Chrome's third-party cookie deprecation — impose technical limits on cookie lifetimes that may conflict with server-set durations. A cookie lifetime audit identifies cookies exceeding regulatory or technical limits and ensures accurate duration disclosure.
Cookie Duration Classification
Session vs. Persistent Cookies
| Type | Duration | Behavior | Consent Implications |
|---|---|---|---|
| Session cookie | No Expires or Max-Age attribute |
Deleted when browser closes | Still requires consent if non-essential under ePrivacy Art. 5(3) |
| Persistent cookie | Has Expires or Max-Age |
Survives browser restart | Requires consent; duration must be disclosed (Planet49) |
| Server-refreshed | Reset on each visit via Set-Cookie | Effectively indefinite if user visits regularly | Duration is from last visit, not first set — must disclose rolling nature |
Duration Categories
| Category | Duration Range | Examples | Regulatory Concern |
|---|---|---|---|
| Short-lived | < 24 hours | Session IDs, CSRF tokens | Low — typically strictly necessary |
| Medium-lived | 24 hours - 30 days | A/B test assignments, session replay | Medium — review necessity |
| Long-lived | 30 days - 13 months | Analytics IDs, preference cookies | High — must justify duration |
| Excessive | > 13 months | Legacy tracking cookies, _ga (2 years) | Very high — CNIL non-compliant duration |
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.
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 · 186 lines · 46 tokens per session scan A a645711c5fff
cookie-lifetime-audit is a skill published in the GitHub repository mukul975/Privacy-Data-Protection-Skills (321 stars, last pushed 7mo ago), licensed Apache-2.0. It adds 46 tokens to every session and 2,493 once invoked, about $0.0002 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 2026-08-30.
Other skills, from other repositories
privacy-compliance
Comprehensive global privacy compliance agent skill covering GDPR, CCPA/CPRA, HIPAA Privacy Rule, EU AI Act, LGPD, cross-border data transfer mechanisms (SCCs, BCRs, EU-US DPF), PII identification and classification, data minimization, consent management, privacy-by-design patterns, DPIA workflows, data subject access…
fedramp
Expert guidance for FedRAMP certification and compliance under CR26 (FedRAMP Consolidated Rules for 2026). Use this skill whenever a user asks about FedRAMP authorization, ATO (Authority to Operate), cloud security for federal government, NIST SP 800-53 controls, CSP compliance, or any of the core FedRAMP document…
eu-cra
Expert EU Cyber Resilience Act (CRA) advisor for Regulation (EU) 2024/2847 — mandatory cybersecurity and vulnerability handling requirements for all products with digital elements (PDEs) sold in the EU. Use this skill for gap analysis, product classification (Default / Class I / Class II), conformity assessment route…
gdpr-compliance
Expert GDPR compliance assistant covering all four core workflows: (1) auditing code and systems for GDPR violations, (2) drafting GDPR-compliant documents such as privacy policies, Data Processing Agreements (DPAs), and consent notices, (3) answering GDPR compliance questions with authoritative article citations, and…
iso42001
Expert ISO 42001 AI Management System (AIMS) compliance advisor. Use this skill whenever a user asks about ISO/IEC 42001:2023, AI governance, AI management systems, AI risk assessment, AI system impact assessment, Annex A controls for AI, Statement of Applicability for AI systems, AI policy, responsible AI, AI…
nist-800-53
NIST SP 800-53 Rev 5 compliance advisor — all 20 control families (AC, AT, AU, CA, CM, CP, IA, IR, MA, MP, PE, PL, PM, PS, PT, RA, SA, SC, SI, SR), Low/Moderate/High baseline selection, FIPS 199/200 system categorization, control tailoring and overlays, privacy controls (PT family), supply chain risk management (SR…