children-data-minimization

children-data-minimization is a skill for Claude Code, Codex from ThomasMoreAI/legal-skills-open. It costs 87 tokens per session (3,586 once invoked), scanned A, a copy of children-data-minimization, Apache-2.0.

A framework for limiting how much personal data from children a service collects and how long it keeps it. Data minimisation means collecting only what is needed for a specific service.

In plain words
What is it for?
Use it to test whether child data is necessary, set retention periods, design parental controls, restrict profiling, and automate deletion.
Why use it?
It helps reduce privacy risk for children, who receive stronger protection under several laws. It also supports shorter retention, limited profiling, and deletion when data is no longer needed.

Skill for Claude CodeCodex

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

Good fit Use it to test whether child data is necessary, set retention periods, design parental controls, restrict profiling, and automate deletion.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/thomasmoreai/legal-skills-open/children-data-minimization
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 children-data-minimization
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 children-data-minimization

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/thomasmoreai/legal-skills-open/children-data-minimization"><img src="https://agentmods.dev/badge/skills/thomasmoreai/legal-skills-open/children-data-minimization.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 87 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,586 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 $0.00087 $0.03586
Opus 5 $0.00044 $0.01793
Sonnet 5 $0.00017 $0.00717
Haiku 4.5 $0.00009 $0.00359

Measured 8d ago against content hash 1029dc9fbc7f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

children-data-minimization 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 8d 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 children-data-minimization — 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/children-data-minimization/SKILL.md · 216 lines

How it starts

The opening of the file, as written. The whole thing — 216 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Children's Data Minimisation and Retention Limits

Overview

Data minimisation for children's data requires a stricter interpretation of GDPR Article 5(1)(c) ("adequate, relevant and limited to what is necessary") than the standard adult context. Recital 38 states that children merit specific protection with regard to their personal data, as they may be less aware of the risks, consequences, and safeguards concerned and their rights in relation to the processing of personal data. The UK AADC Standard 8 explicitly requires that services collect and retain "only the minimum amount of personal data needed to provide the elements of the service in which a child is actively and knowingly engaged." COPPA Section 312.7 prohibits conditioning a child's participation on the collection of more personal information than is reasonably necessary. This skill provides a comprehensive framework for applying these heightened standards.

GDPR Article 5(1)(c) — Data Minimisation Principle

"Personal data shall be adequate, relevant and limited to what is necessary in relation to the purposes for which they are processed."

When applied to children's data, "necessary" is interpreted strictly. The EDPB has confirmed that the vulnerability of children as data subjects (WP248rev.01 Criterion 7) elevates the data minimisation obligation.

GDPR Article 5(1)(e) — Storage Limitation Principle

"Personal data shall be kept in a form which permits identification of data subjects for no longer than is necessary for the purposes for which the personal data are processed."

For children's data, retention periods should be shorter than for adult data given that: (a) the purposes of processing often have a shorter useful life for children (e.g., educational progress in a specific grade), (b) the risk of harm from data exposure increases with retention duration, and (c) the child may not have meaningfully consented to long-term retention.

GDPR Recital 38 — Specific Protection for Children

Read the full file on GitHub · 216 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. 8d ago First seen · 216 lines · 87 tokens per session scan A 1029dc9fbc7f

Subscribe to this mod's changes

children-data-minimization is a skill published in the GitHub repository ThomasMoreAI/legal-skills-open (72 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 87 tokens to every session and 3,586 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 children-data-minimization, differing in 22 lines, and is treated as a copy.