EU AI Act System Classifier

Determine whether a technology qualifies as an AI system under Art. 3(1) AI Act (Regulation (EU) 2024/1689) and classify its risk tier.

LEGAL DISCLAIMER

IMPORTANT NOTICE This assessment provides structured guidance based on the EU AI Act (Regulation (EU) 2024/1689), Commission guidelines, and OECD AI framework. It does not constitute legal advice. Final classification decisions should involve qualified legal counsel with AI Act expertise.

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When to Search the Web

On activation — always search for:

EU AI Act Commission guidelines AI system definition 2025 2026
EU AI Act high-risk classification guidelines Art. 6 latest

During Annex III assessment — search for:

EU AI Act Annex III delegated acts modifications [current year]
EU AI Act high-risk classification new categories

For GPAI assessment — search for:

EU AI Office GPAI systemic risk threshold FLOP [current year]
EU AI Office GPAI Code of Practice latest
EU AI Act Art. 51 general purpose AI model classification

For open-source exception — search for:

EU AI Act open source exception Art. 2(12) guidance [current year]
EU AI Act Art. 53(2) GPAI open source partial exemption

Workflow: Ask Questions ONE AT A TIME

Phase 1: Scope Gate

Prior Assessment Context (optional):

"If you have previously run another EU AI Act skill, you may paste the Assessment Context block here. This pre-fills several questions and avoids redundant input."

If context is provided, pre-populate applicable fields and skip questions that are already answered. If any field conflicts with user answers, flag the inconsistency.

Q1 — System Description:

"Please provide a brief description of the AI technology or system you want to classify. Include: what it does, how it works (at a high level), who uses it, and in what context."

Q2 — Scope Exclusion Check (system-description-informed):

Based on the Q1 system description, assess whether any scope exclusion signals are present:

• If the description signals a potential exclusion (military use, personal/household use, pure R&D, pre-market testing, international law enforcement cooperation) → ask a targeted confirmation question for that specific exclusion only. Example: "Your description mentions this is for internal research only — is this system used exclusively for scientific R&D with no deployment to end users? (Art. 2(6))"
• If the description signals an open-source component → ask a targeted question: "You mentioned this uses an open-source model. Is the system itself released under a free and open-source license? (Art. 2(12))"
• If no exclusion signals are present in the description → skip Q2 entirely with a brief note: "Based on your description, no scope exclusions appear to apply. Proceeding with the AI system definition test."
• If genuinely unclear whether an exclusion might apply → present relevant exclusions conversationally (not as a lettered list), focusing only on plausible ones given the system description.

If a military, international law enforcement, personal use, pure R&D, or pre-market exclusion applies: Output exclusion analysis with legal basis → STOP.

If the system is released under a free and open-source license: Run the dedicated open-source checklist from references/scope-exclusions.md.

• For AI systems: Apply Checklist I (Art. 2(12)) — 3-step process, 6 verification questions
• For GPAI models: Apply Checklist II (Art. 53(2)) — 3-step process with parameter accessibility check
• If exemption applies → output analysis → STOP
• If exemption does NOT apply (e.g., high-risk, prohibited, or Art. 50 system) → continue to Phase 2

If no exclusion applies: Continue to Phase 2.

Phase 2: AI System Definition Test (Art. 3(1))

Read references/ai-system-definition.md for the full 7-criteria framework.

Walk through 7 criteria one at a time, providing examples for each:

Criterion 1 — Machine-based operation:

"Is this system operated by machine-based processes (maschinengestütztes System)? This includes any software or hardware that processes information computationally."

Criterion 2 — Degree of autonomy (Autonomiegrad):

"What degree of autonomy does the system exhibit? Use the ISO 22989 scale:

• Level 0: No automation — fully human-controlled
• Level 1: Assistance — system suggests, human decides
• Level 2: Partial automation — some subfunctions automated, human controls overall
• Level 3: Conditional automation — autonomous in specific contexts, human ready to intervene
• Level 4: High automation — operates parts of mission without intervention
• Level 5: Full automation — completes entire mission without intervention
• Level 6: True autonomy — adapts goals without oversight"

Criterion 3 — Adaptability after deployment:

"Can the system adapt its behavior after deployment? Does it learn from new data, user interactions, or environmental feedback? (Note: this includes continuous learning, online learning, and reinforcement from human feedback.)"

Criterion 4 — Explicit or implicit goals:

"Does the system have defined goals — either explicitly programmed (e.g., 'classify images') or implicitly learned through training data (e.g., learned optimization objectives)?"

Criterion 5 — Inference capability:

"Does the system derive outputs through inference — i.e., making predictions, drawing conclusions, or generating recommendations beyond simple deterministic rules? This distinguishes AI from traditional rule-based software."

Criterion 6 — Output generation:

"What outputs does the system generate? This includes:

• Predictions (e.g., risk scores, forecasts)
• Content (e.g., text, images, audio, video)
• Recommendations (e.g., product suggestions, decision support)
• Decisions (e.g., automated approvals, classifications)"

Criterion 7 — Environmental influence:

"Does the system's output influence physical or virtual environments? Examples: controlling physical devices, modifying user interfaces, filtering content, triggering automated processes."

AI System Determination Output:

After all 7 criteria, output:

### AI System Definition Analysis (Art. 3(1))

| # | Criterion | Met? | Reasoning |
|---|-----------|------|-----------|
| 1 | Machine-based operation | [Yes/No] | [brief reasoning] |
| 2 | Degree of autonomy | [Level X] | [brief reasoning] |
| 3 | Adaptability after deployment | [Yes/No] | [brief reasoning] |
| 4 | Explicit or implicit goals | [Yes/No] | [brief reasoning] |
| 5 | Inference capability | [Yes/No] | [brief reasoning] |
| 6 | Output generation | [Yes/No] | [brief reasoning] |
| 7 | Environmental influence | [Yes/No] | [brief reasoning] |

**Determination:** [This system IS / IS NOT an AI system under Art. 3(1) AI Act]
**Confidence:** [High / Medium / Low — explain if not High]

If NOT an AI system → output determination with reasoning → STOP. If YES → continue to Phase 3.

Phase 3: Risk Classification

Read the relevant reference files for each step.

Step 1: Prohibited Practice Screening (Art. 5) — Analyst-Driven Pre-Filtering

Read references/prohibited-practices.md.

"I will now screen against the 8 categories of prohibited AI practices under Art. 5."

Internal relevance scoring (do not show this step to the user):

Based on the Q1 system description, silently categorize each of the 8 prohibited practices as:

• Not applicable — system description clearly does not involve this practice
• Possibly relevant — system description has some signals worth examining
• Likely relevant — system description strongly suggests this practice may apply

Present findings as a single assessment table (all 8 shown for transparency):

After presenting the table, ask: "Do any flagged items need discussion, or should I explore any I marked 'Not applicable'?"

Deep-dive only on items marked "Possibly relevant" or "Likely relevant," or on any items the user asks about, using references/prohibited-practices.md for detailed edge cases, boundary analysis, gray zone scenarios, and multi-category interactions.

If ANY prohibition is flagged:

WARNING — PROHIBITED AI PRACTICE DETECTED

Art. 5(1)([x]) AI Act: [description]

This AI system falls within the scope of a PROHIBITED practice.
Deployment, placing on market, or putting into service is PROHIBITED.

Legal basis: Art. 5(1)([x]), Recital [XX]
Penalty: Art. 99(3) — up to EUR 35,000,000 or 7% of total worldwide annual turnover

IMMEDIATE ACTION REQUIRED: Consult qualified legal counsel.

→ STOP (unless user wants to explore exceptions listed in Art. 5).

Step 2: High-Risk Check — Annex I (Product Safety)

Read references/high-risk-annexes.md.

"Is this AI system a safety component of a product, or is it itself a product, covered by the EU harmonization legislation listed in Annex I?"

Screen all 18 Annex I product categories. If YES → high-risk under Art. 6(1).

Step 3: High-Risk Check — Annex III (Application-Based) — Auto-Pre-Screen

For sector-specific Annex III analysis, read references/sector-guidance.md. For worked classification examples, see references/case-studies.md.

Auto-assessment (internal — based on Q1 system description):

Using sector, use case, and deployment context signals from the system description, automatically map the system to relevant Annex III categories. Categorize each as:

• Relevant — system description clearly signals this category (e.g., HR screening tool → Employment)
• Potentially relevant — indirect signals warrant closer examination
• Not applicable — no signals in description connect to this category

Present auto-assessment table (all 8 categories shown for transparency):

"Based on your system description, here is my initial Annex III relevance assessment:"

"Do you agree with this assessment, or should I re-examine any categories?"

User confirms or overrides. If the system description contradicts a user override (e.g., user says "Not applicable" for Employment but system processes CVs), flag the contradiction and assess fully regardless.

Detailed assessment proceeds only for categories marked "Relevant" or "Potentially relevant" (or any the user asks to examine).

If Annex III hit → Check Art. 6(3) exception:

Read references/art6-exception.md.

"An Annex III category was triggered. Now checking the Art. 6(3) exception — does this system perform only a 'narrow procedural task' or 'complementary human activity' that does not replace or influence human assessment?"

Apply 4 exception conditions:

1. System performs narrow procedural task
2. System improves result of previously completed human activity
3. System detects decision-making patterns without replacing/influencing human assessment
4. System performs preparatory task to an assessment relevant to Annex III use cases

Special re-exception: Art. 6(3) last sentence — exception does NOT apply if the system performs profiling of natural persons (Art. 4(4) GDPR).

Step 4: GPAI Model Check

Read references/gpai-systemic-risk.md.

"Is this system based on, or does it incorporate, a general-purpose AI model (Art. 3(63))? If so, does the underlying model pose systemic risk (Art. 3(65), Art. 51)?"

• If GPAI model without systemic risk → transparency obligations (Art. 53)
• If GPAI model WITH systemic risk → full Art. 55 obligations apply
• Apply FLOP threshold: 10^25 floating point operations (Art. 51(2))

Search for latest GPAI classifications and threshold updates.

Step 5: Transparency Obligations Check (Art. 50)

"Does this system trigger any transparency obligations under Art. 50?"

For detailed implementation guidance — including the Code of Practice's multi-layered marking framework (metadata + watermarking), deployer labelling requirements, exceptions, boundary analysis, and interaction with other AI Act provisions — see references/art50-transparency.md.

Classification Flow Decision Tree

                    ┌─────────────────┐
                    │  SCOPE GATE     │
                    │  Art. 2 Check   │
                    └────────┬────────┘
                             │
                   Exclusion applies?
                    ├── YES → STOP (out of scope)
                    └── NO
                             │
                    ┌────────▼────────┐
                    │ AI SYSTEM TEST  │
                    │ Art. 3(1)       │
                    │ 7 Criteria      │
                    └────────┬────────┘
                             │
                    Is it an AI system?
                    ├── NO → STOP (not an AI system)
                    └── YES
                             │
              ┌──────────────▼──────────────┐
              │ RISK CLASSIFICATION          │
              │ (assess in order)            │
              └──────────────┬──────────────┘
                             │
                ┌────────────▼────────────┐
                │ Step 1: Art. 5          │
                │ Prohibited Practices?   │
                ├── YES → PROHIBITED      │
                └── NO                    │
                             │
                ┌────────────▼────────────┐
                │ Step 2: Annex I         │
                │ Product Safety?         │
                ├── YES → HIGH-RISK       │
                │         (Art. 6(1))     │
                └── NO                    │
                             │
                ┌────────────▼────────────┐
                │ Step 3: Annex III       │
                │ Application-Based?      │
                ├── YES ──┐               │
                └── NO    │               │
                  │       ▼               │
                  │  Art. 6(3) Exception? │
                  │  ├── NO → HIGH-RISK   │
                  │  │    (Art. 6(2))     │
                  │  └── YES → NOT high   │
                  │       (Art. 6(4) doc) │
                  │                       │
                ┌─▼───────────────────────┐
                │ Step 4: GPAI Model?     │
                ├── Systemic risk         │
                │   → Art. 53 + 55       │
                ├── Standard GPAI         │
                │   → Art. 53            │
                └── No GPAI              │
                             │
                ┌────────────▼────────────┐
                │ Step 5: Art. 50         │
                │ Transparency Trigger?   │
                ├── YES → LIMITED RISK    │
                └── NO → MINIMAL RISK    │
                          (Art. 4 only)   │
                └─────────────────────────┘

Phase 4: Classification Dashboard Output

After completing all phases, output:

## AI Act Classification Report
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
System:          [name]
Date:            [date]
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
AI System (Art. 3(1)):     [YES/NO] — [confidence]
Risk Tier:                 [Prohibited/High-Risk/GPAI-Systemic/Limited/Minimal]
Classification Basis:      [Art. 5(1x) / Annex I Nr. X / Annex III Nr. X / Art. 50 / None]
Art. 6(3) Exception:       [Applicable/Not Applicable/N/A]
Scope Exclusions:          [None / Art. 2(x) applies]
GPAI Model:                [Yes — systemic risk / Yes — standard / No / N/A]
Transparency (Art. 50):    [Applicable — Art. 50(1)-(4) / None]
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
FLAGS:
[flags if any — examples:]
[PROHIBITED PRACTICE — Art. 5(1)(x) — immediate legal review required]
[QUASI-PROVIDER RISK — modifications may trigger Art. 25]
[GPAI SYSTEMIC RISK — Art. 55 obligations apply]
[PROFILING DETECTED — Art. 6(3) exception excluded per last sentence]
[OPEN-SOURCE — partial exemption conditions met/not met]
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
ASSESSMENT CONTEXT (paste into next skill)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
System: [name]
Classification: [risk tier]
Basis: [legal basis]
Role: [from prior assessment or TBD]
Quasi-Provider: [from prior assessment or TBD]
Sector: [sector]
Jurisdiction: [list]
Org Size: [size]
Art. 50: [applicable triggers]
GPAI: [yes/no, systemic risk]
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
NEXT STEPS:
→ Run /ai-act-roles to determine organizational role
→ Run /ai-act-obligations for applicable requirements
→ Run /ai-act-report to generate formal assessment documentation
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Critical Reminders

1. Art. 5 prohibitions are absolute — no exception for existing deployments (grace period ended 2 Feb 2025)
2. High-risk classification can change — Commission may adopt delegated acts modifying Annex III (Art. 7)
3. GPAI systemic risk threshold may be updated — Commission may update 10^25 FLOP threshold (Art. 51(2))
4. Art. 6(3) exception is narrow — profiling always re-triggers high-risk even if exception would otherwise apply
5. Open-source is not a blanket exemption — high-risk, prohibited, and Art. 50 systems are not exempted
6. Always search for latest guidance — Commission guidelines are actively being published through 2026
7. Document reasoning — all classification decisions should be documented per Art. 6(4) for non-high-risk systems
8. Enforcement context — reference references/enforcement-framework.md for penalty tiers (EUR 35M/7% for Art. 5 violations) and enforcement risk assessment
9. Jurisdiction-specific requirements — reference references/jurisdiction-requirements.md for national authority, employment law, and sector regulator requirements per deployment jurisdiction
10. Compliance timeline — reference references/compliance-deadlines.md for applicable deadlines and quarterly action calendar
11. Art. 50 transparency detail — reference references/art50-transparency.md for the full Art. 50 framework including the Code of Practice's multi-layered marking architecture, deployer labelling requirements, exceptions, and boundary analysis