EU AI Act Article 50 Transparency: A Checklist for Indie AI Apps

If you ship a chatbot, an AI "companion," a writing assistant, or anything that generates text, images, audio, or video, the EU AI Act has a section written almost exactly for you. Article 50 sets out transparency obligations: the rules about telling people when they are interacting with AI, and when content they see was produced or manipulated by AI. It is one of the few parts of the Act that lands squarely on small builders, not just on the labs training large models.

The good news for a solo developer: Article 50 is mostly about clear notices, not heavy paperwork. The catch is that the transparency duties are widely treated as a near-term concern, and the obligations apply regardless of where you are based if your users are in the EU. This checklist breaks Article 50 into concrete items a launching indie can act on, and maps each one to a signal LaunchTrust can detect on your live site.

How the AI Act is phased (and where Article 50 sits)

The EU AI Act does not switch on all at once. It entered into force in 2024 and applies in stages over several years — prohibited-practice rules first, then obligations for general-purpose AI models, then transparency obligations, and finally the bulk of the high-risk system rules. We deliberately avoid pinning an exact day to each phase here, because staggered application dates are easy to misquote; confirm the current applicable date for transparency duties against the official text or a qualified source.

What matters for this page: Article 50 transparency is not a far-off, theoretical worry. It targets ordinary conversational and generative features, and it is the obligation an indie AI app is most likely to be measured against first. Treating it as a launch-time item is the safe posture.

Who Article 50 applies to

Article 50 generally reaches you if, for users in the EU, you:

• Operate an AI system that interacts with people — a chatbot, voice assistant, support agent, or companion. The duty to tell users they are dealing with AI typically falls on the provider who builds or offers the system.
• Generate synthetic content — text, images, audio, or video produced or substantially altered by AI, including "deepfake"-style media and AI-written articles published to inform the public. Marking and disclosure duties here often fall on the deployer who puts it in front of people.

A practical note on the "obvious" carve-out: the interaction-disclosure duty commonly does not apply when it is already plainly obvious that a person is dealing with AI. Don't lean on this — what feels obvious to you as the builder is rarely obvious to a first-time user, and a short, explicit notice is the low-risk default.

The Article 50 transparency checklist

Work through these before you point EU traffic at your app. Each item is phrased as something you can confirm, and the linked detector tells you whether the signal is present on your public surface.

• Users are told, in-context, that they are interacting with an AI — on the chat screen or assistant panel itself, not only in a buried legal page. → maps to AI interaction disclosure
• The notice is plain-language, e.g. "You're chatting with an AI — responses are AI-generated and may be inaccurate," rather than a vague "AI-powered" marketing label.
• The disclosure is visible to logged-out and first-time visitors, since that is what a reviewer (and an automated scan) sees first. → AI interaction disclosure
• AI-generated images, audio, or video are marked as artificial where Article 50 expects it (e.g. machine-readable marking and/or a visible label for deepfake-style content).
• AI-generated text published to inform the public is disclosed as AI-generated, where that publication-disclosure duty applies.
• Your privacy policy describes the AI processing — what data goes to the model, any third-party model providers, and how user inputs are handled. → maps to privacy policy
• Your terms of service set expectations for AI output — that it can be wrong, is not professional advice, and how users may and may not rely on it. → maps to terms of service
• The notice is reachable and legible, not hidden behind a paywall, a login, or microscopic text.
• You've considered overlapping rules for the same feature — California's companion-bot law and Apple's review guidelines often apply to the same chat experience. → California SB 243 checklist, and the European Union overview

If you can tick the first three and the privacy/terms items, you have addressed the parts of Article 50 most relevant to a typical conversational or generative indie app.

What LaunchTrust checks for this framework

LaunchTrust does not assess "Article 50 compliance" — no scanner can. What it does is surface the observable signals an Article 50-minded reviewer looks for first, by fetching your public page and inspecting the HTML an anonymous visitor receives:

• The ai_disclosure detector reports detected when it finds a disclosure snippet (a badge loader) or plain disclosure-directed wording such as "you're chatting with an AI," not detected when neither is present, and unable when the page can't be fetched. Crucially, bare labels like "AI-powered" do not count — they describe a feature without telling a user, in the moment, that they are talking to a machine.
• The privacy policy and terms of service detectors report whether those documents appear to be present and linked.

Each result is a signal, not a judgment. "Detected" means the wording or snippet is on the page; it does not confirm the notice is placed correctly, worded sufficiently, or adequate for Article 50 as applied to your product.

A concrete example

A disclosure the scanner recognizes as detected (info) is a badge loader with the attribute on the same tag:

<script src="https://cdn.example.com/disclose.js" data-disclose></script>

A detected (low) result is plain text next to the chat box: "You're chatting with an AI. Responses are AI-generated and may be inaccurate." A not detected result is a page where a chat widget is present but the only nearby AI reference is a marketing slogan like "Powered by AI" in the footer — exactly the gap Article 50 is concerned with.

How to address Article 50 transparency

1. Add an in-context AI notice on the chat or assistant screen — short, plain, and visible before the first message. This is the single highest-value step.
2. Make it visible to logged-out users, so first-time visitors and reviewers see it without signing in.
3. Label AI-generated media (images, audio, video) as artificial where Article 50 expects marking, and keep "deepfake"-style content clearly flagged.
4. Disclose AI in your privacy policy — name the model providers, describe what user input is sent, and explain retention. Set output expectations in your terms of service: AI responses may be inaccurate and are not professional advice.
5. Cross-check companion-bot and store rules if your app is a character or companion chat — see the California SB 243 checklist. Apple's App Review Guideline 5.1.2 also increasingly expects transparency for AI features.
6. Re-scan and confirm the disclosure signal flips to detected, then verify the notice yourself in a logged-out browser session.

Check this in 30 seconds

Run your URL through LaunchTrust's free scanner. It fetches your live page and reports whether an AI disclosure is detected, not detected, or unable to determine — alongside your privacy policy and terms — so you can spot a missing Article 50 transparency signal before a user, regulator, or app reviewer does. No signup, no crawl of private pages: it reads the same public HTML your visitors get.

FAQ

What does Article 50 of the EU AI Act actually require? In broad terms, it sets transparency obligations: people should be told when they're interacting with an AI system (unless it's already obvious), and AI-generated or AI-manipulated content — including synthetic images, audio, and video — should be marked or disclosed where the Act specifies. The precise wording and scope are in the official text; treat this page as a practical orientation, not a legal definition.

When do the Article 50 transparency rules apply? The AI Act applies in phases over several years. The transparency duties are widely treated as a near-term concern rather than a distant one, but staggered dates are easy to misquote — confirm the current applicable date against the official text or a qualified source. The safe posture for a launching indie is to treat in-context AI disclosure as a launch-time item.

I'm based outside the EU — does Article 50 still apply to me? Often, yes. The Act's transparency obligations are written to reach AI systems whose output or interaction affects people in the EU, regardless of where the provider is located. If EU users can reach your chatbot or generated content, Article 50 is commonly in scope.

Does a "detected" disclosure prove my app meets Article 50? No. "Detected" means the scanner found a disclosure snippet or disclosure-directed wording on your page. It does not confirm the notice is worded, placed, or sufficient for Article 50 as applied to your product. LaunchTrust surfaces signals — it is not legal advice or certification. For your specific situation, consult a qualified professional.

Compliance aid, not legal advice. LaunchTrust reports signals, not a verdict or certification.