age-verification-methods

age-verification-methods is a skill for Claude Code, Codex from ThomasMoreAI/legal-skills-open. It costs 76 tokens per session (3,494 once invoked), scanned A, a copy of age-verification-methods, Apache-2.0.

A guide to deciding whether online users are children through age verification or age estimation. Verification confirms age with evidence, while estimation makes a privacy-sensitive probability-based assessment.

In plain words
What is it for?
Use it to compare document checks, digital identity, self-declaration, facial age estimation, behavioural signals, and other age-assessment methods.
Why use it?
It helps teams balance accuracy, privacy, accessibility, and proportionality when applying child-safety safeguards. It explains the regulatory context for choosing an approach.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to compare document checks, digital identity, self-declaration, facial age estimation, behavioural signals, and other age-assessment methods.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/thomasmoreai/legal-skills-open/age-verification-methods
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 ThomasMoreAI/legal-skills-open --skill age-verification-methods
Clone the repo
git clone --depth 1 https://github.com/ThomasMoreAI/legal-skills-open

Made for: Claude Code, Codex.

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 age-verification-methods

README.md
[![agentmods](https://agentmods.dev/badge/skills/thomasmoreai/legal-skills-open/age-verification-methods/github.svg)](https://agentmods.dev/skills/thomasmoreai/legal-skills-open/age-verification-methods)
Your own site
<a href="https://agentmods.dev/skills/thomasmoreai/legal-skills-open/age-verification-methods"><img src="https://agentmods.dev/badge/skills/thomasmoreai/legal-skills-open/age-verification-methods/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 age-verification-methods

Your own site · 80×15
<a href="https://agentmods.dev/skills/thomasmoreai/legal-skills-open/age-verification-methods"><img src="https://agentmods.dev/badge/skills/thomasmoreai/legal-skills-open/age-verification-methods.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 76 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,494 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 95% copy Near-identical to another mod 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 $0.00076 $0.03494
Opus 5 $0.00038 $0.01747
Sonnet 5 $0.00015 $0.00699
Haiku 4.5 $0.00008 $0.00349

Measured 9d ago against content hash 8ff12ad11acf, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

age-verification-methods 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 9d 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.

Origin

This is a copy

95% identical to age-verification-methods — 22 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

cross-jurisdiction/data-protection/skills/age-verification-methods/SKILL.md · 232 lines

How it starts

The opening of the file, as written. The whole thing — 232 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Age Verification and Estimation Methods

Overview

Age verification and age estimation are distinct but complementary approaches to determining whether a user is a child for the purpose of applying appropriate data protection safeguards. Age verification provides a definitive confirmation of age through documentary or transactional evidence. Age estimation provides a probabilistic assessment of age using technological methods such as facial analysis, behavioural analysis, or device signals. The selection of an appropriate method requires balancing accuracy, privacy impact, accessibility, and proportionality. This skill covers the full spectrum of available methods, their regulatory context under the GDPR, UK AADC, COPPA, and emerging legislation such as the EU Digital Services Act (DSA) and the UK Online Safety Act 2023, and provides implementation guidance based on ICO and CNIL recommendations.

Regulatory Context

GDPR Article 8(2)

"The controller shall make reasonable efforts to verify in such cases that consent is given or authorised by the holder of parental responsibility over the child, taking into consideration available technology."

The "reasonable efforts" standard is context-dependent. The EDPB has not prescribed specific technologies but expects controllers to adopt verification proportionate to the risk of the processing.

UK AADC Standard 3 — Age-Appropriate Application

"Take a risk-based approach to recognising the age of individual users and ensure you effectively apply the standards in this code to child users." The ICO guidance states that the level of certainty required depends on the risks to children from the processing. Higher risks demand more robust age assurance methods.

UK Online Safety Act 2023

Section 11(3) requires providers of regulated user-to-user services and search services to use "proportionate systems or processes" designed to prevent children from encountering primary priority content that is harmful to children. Ofcom's codes of practice specify age verification as a recommended measure for pornographic content and age estimation for broader content categories.

Read the full file on GitHub · 232 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. 9d ago First seen · 232 lines · 76 tokens per session scan A 8ff12ad11acf

Subscribe to this mod's changes

age-verification-methods is a skill published in the GitHub repository ThomasMoreAI/legal-skills-open (72 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 76 tokens to every session and 3,494 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. It is 95% identical to age-verification-methods, differing in 22 lines, and is treated as a copy.