data-sovereignty-patterns

data-sovereignty-patterns is a skill for Claude Code, Codex from BuilderCed/agent-skills. It costs 40 tokens per session (1,123 once invoked), scanned A, original, MIT.

Guidance for handling laws and requirements about where data is stored, processed, and sent across national borders. It covers mechanisms such as EU adequacy decisions and Standard Contractual Clauses, which are legal safeguards for international transfers.

In plain words
What is it for?
Use it when selecting cloud providers, using AI services outside the EU, designing multi-region systems, or checking international data flows and localization requirements.
Why use it?
It helps identify data-location and cross-border transfer issues before choosing providers or designing systems. The guidance still needs review by a qualified lawyer for a specific situation.

Skill for Claude CodeCodex

Which agent this was written for is unclear — built for cline. Also seen: mentions Codex; built for cline; mentions Gemini CLI.

Good fit Use it when selecting cloud providers, using AI services outside the EU, designing multi-region systems, or checking international data flows and localization requirements.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/builderced/agent-skills/data-sovereignty-patterns
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 BuilderCed/agent-skills --skill data-sovereignty-patterns
Clone the repo
git clone --depth 1 https://github.com/BuilderCed/agent-skills

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 data-sovereignty-patterns

README.md
[![agentmods](https://agentmods.dev/badge/skills/builderced/agent-skills/data-sovereignty-patterns/github.svg)](https://agentmods.dev/skills/builderced/agent-skills/data-sovereignty-patterns)
Your own site
<a href="https://agentmods.dev/skills/builderced/agent-skills/data-sovereignty-patterns"><img src="https://agentmods.dev/badge/skills/builderced/agent-skills/data-sovereignty-patterns/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 data-sovereignty-patterns

Your own site · 80×15
<a href="https://agentmods.dev/skills/builderced/agent-skills/data-sovereignty-patterns"><img src="https://agentmods.dev/badge/skills/builderced/agent-skills/data-sovereignty-patterns.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,123 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 $0.00040 $0.01123
Opus 5.5 $0.00016 $0.00449
Sonnet 5.5 $0.00008 $0.00225
Haiku 4.5 $0.00004 $0.00112

Measured 1mo ago against content hash 7e279a237009, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

data-sovereignty-patterns 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.

skills/sovereignty/data-sovereignty-patterns/SKILL.md · 121 lines

How it starts

The opening of the file, as written. The whole thing — 121 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Data Sovereignty Patterns

DISCLAIMER: Guidance only. Cross-border data transfers require legal assessment specific to your situation.

When to Use

  • Choosing cloud providers (data residency requirements)
  • Using AI APIs that process data outside the EU
  • Designing data architecture for multi-region deployments
  • Assessing compliance for international data flows
  • Responding to data localization requirements

EU → Non-EU Transfer Mechanisms

After Schrems II (CJEU C-311/18), transferring personal data outside the EEA requires:

1. Adequacy Decisions (Easiest)

Countries deemed adequate by the European Commission:

Country Decision Date Notes
UK 2021 (renewed) Post-Brexit, includes sunset clause
Japan 2019 Mutual adequacy
South Korea 2022 Comprehensive
USA 2023 (EU-US DPF) Data Privacy Framework, requires self-certification
Canada 2001 Commercial only (PIPEDA)
Switzerland 2000 Comprehensive
Israel 2011 Comprehensive
New Zealand 2012 Comprehensive
Argentina 2003 Comprehensive
Uruguay 2012 Comprehensive

For adequate countries: transfer freely, no additional mechanism needed.

2. Standard Contractual Clauses (SCCs)

For non-adequate countries, use EU-approved SCC templates:

Module Scenario
Module 1 Controller → Controller
Module 2 Controller → Processor (most common: you → cloud provider)
Module 3 Processor → Sub-processor
Module 4 Processor → Controller

Required: Transfer Impact Assessment (TIA) evaluating recipient country laws.

3. Binding Corporate Rules (BCRs)

For intra-group transfers within multinational companies. Complex, expensive, long approval (~18 months).

Data Localization by Region

Region Requirement Affected Data
EU/EEA Transfer mechanism required for export Personal data (GDPR)
Russia Localization of Russian citizens' data Personal data
China Security assessment for cross-border transfers Personal data + "important data"
India Proposed localization (DPDP Act 2023) Sensitive personal data
Brazil Similar to GDPR (LGPD) Personal data, adequacy or SCCs
Saudi Arabia Localization for certain sectors Government, health, finance
Turkey Explicit consent or BCR for transfers Personal data

Read the full file on GitHub · 121 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. 1mo ago First seen · 121 lines · 40 tokens per session scan A 7e279a237009

Subscribe to this mod's changes

data-sovereignty-patterns is a skill published in the GitHub repository BuilderCed/agent-skills (2 stars, last pushed 6mo ago), licensed MIT. It adds 40 tokens to every session and 1,123 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 2026-08-31.

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