ai-act-classification

ai-act-classification is a skill for Claude Code from lexbeam-software/eu-ai-governance-plugin. It costs 72 tokens per session (1,023 once invoked), scanned A, original, Apache-2.0.

A guide for classifying AI systems and general-purpose AI models under the European Union AI Act, the EU law governing artificial intelligence.

In plain words
What is it for?
Use it to prepare an evidence-based classification or compliance memo, while treating the result as guidance rather than legal advice.
Why use it?
It helps organize the legal questions behind prohibited uses, high-risk systems, transparency duties, responsibilities, and deadlines.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the eu-ai-governance plugin — 6 skills, 6 commands, 1 MCP server shipped together

Good fit Use it to prepare an evidence-based classification or compliance memo, while treating the result as guidance rather than legal advice.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/lexbeam-software/eu-ai-governance-plugin/ai-act-classification
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 lexbeam-software/eu-ai-governance-plugin --skill ai-act-classification
Clone the repo
git clone --depth 1 https://github.com/lexbeam-software/eu-ai-governance-plugin

Made for: Claude Code.

Or install eu-ai-governance, the plugin that ships this one along with the rest of its 6 skills, 6 commands, 1 MCP server.

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 ai-act-classification

README.md
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Your own site
<a href="https://agentmods.dev/skills/lexbeam-software/eu-ai-governance-plugin/ai-act-classification"><img src="https://agentmods.dev/badge/skills/lexbeam-software/eu-ai-governance-plugin/ai-act-classification/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 ai-act-classification

Your own site · 80×15
<a href="https://agentmods.dev/skills/lexbeam-software/eu-ai-governance-plugin/ai-act-classification"><img src="https://agentmods.dev/badge/skills/lexbeam-software/eu-ai-governance-plugin/ai-act-classification.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 72 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,023 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 $0.00072 $0.01023
Opus 5 $0.00036 $0.00511
Sonnet 5 $0.00014 $0.00205
Haiku 4.5 $0.00007 $0.00102

Measured 9d ago against content hash 01ebbd44ef5f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

ai-act-classification 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.

skills/ai-act-classification/SKILL.md · 66 lines

How it starts

The opening of the file, as written. The whole thing — 66 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Classify under the EU AI Act

Support legal and compliance work; do not present the result as legal advice, certification, or a final regulator determination.

Read AI-ACT-DECISION-MAP.md and follow LEGAL-SOURCE-PROTOCOL.md before classifying. Use the Lexbeam EU AI Act MCP when available:

  1. Call euaiact_classify_system with the known facts and structured signals.
  2. If Annex III may apply, call euaiact_assess_art6_3_exception; never auto-apply the exception.
  3. Call euaiact_get_obligations only for provider and deployer roles. Map duties for importers, distributors, authorised representatives, product manufacturers, and other actors from the complete official provisions.
  4. Call euaiact_check_deadlines for operative dates.
  5. Use euaiact_get_article to obtain the versioned summary and official URL, then read the complete official provision before stating a negative, exception, or prohibition. If the full text is inaccessible, label verification incomplete.

If MCP is unavailable, use the embedded decision map, disclose fallback mode, and mark current-law verification as required.

Gather facts

Ask only for facts that can change the outcome:

  • system or model function, intended purpose, users, affected persons, and decision effect
  • provider, deployer, importer, distributor, product-manufacturer, and GPAI roles
  • geography and whether outputs are used in the Union
  • data categories, profiling, biometrics, emotion inference, synthetic content, and workplace use
  • Annex I product-law context and third-party conformity assessment
  • exact Annex III use case, human-review design, and whether the system materially influences decisions
  • substantial modification, rebranding, fine-tuning, or changed intended purpose

Do not classify from a product name, sector label, or vendor marketing description alone.

Apply the gates

Run the gates in order and preserve parallel duties:

Read the full file on GitHub · 66 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 · 66 lines · 72 tokens per session scan A 01ebbd44ef5f

Subscribe to this mod's changes

ai-act-classification is a skill published in the GitHub repository lexbeam-software/eu-ai-governance-plugin (2 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 72 tokens to every session and 1,023 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 2026-08-31.

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