Article 50 has applied since 2 August 2026. Machine-readable marking under 50(2) is due 2 December 2026.
EU AI Act · Article 50(1) · Chat widgets

moinAI and the EU AI Act: does your chat widget tell people it's AI?

In force since 2 Aug 2026Fines up to €15M / 3% turnoverLast updated September 2026

moinAI is a Hamburg-based customer-communication platform whose widget loads from widget.moin.ai through a script tag carrying id="moinloader". It renders as four separate frames: a teaser, a launcher button, an input bar and the chat window itself. The teaser is the one that matters for Article 50(1), because it can open the conversation before the visitor has clicked anything.

The rule itself is short. Article 50(1) of the EU AI Act requires AI systems that interact directly with people to be designed so users know they're dealing with AI, no later than the first interaction, in a clear and distinguishable way. The exception for cases where it's "obvious" is narrow: a natural-language customer-service bot doesn't qualify just because it has a robot icon. A line in your terms of service doesn't satisfy it either. And it's easy to enforce, because a regulator can open your site and start a chat.

Who's on the hook? Responsibility is split: moinAI carries provider-side duties for the system itself, but how the widget is configured and presented on your site is your deployment. If the disclosure setting exists but isn't enabled, or the notice is hidden, that gap is yours.

Where the disclosure lives in moinAI

Note: vendor interfaces and setting names change. This page describes where disclosure surfaces typically live in moinAI as of September 2026; verify the exact toggles in your own moinAI workspace and against moinAI's current documentation.

Your moinAI disclosure checklist

  1. Open your site in a private window as an EU visitor and wait without clicking: if the teaser speaks first, that message is the first interaction and needs to read as AI
  2. Turn on the AI indicator so the 'generated' label appears beneath chatbot messages, and check it survives in the teaser and the input bar, not only in the chat window
  3. Write the AI statement into the bot's own first message rather than relying on the indicator alone, since a label beneath a message is easy to miss on mobile
  4. Check the avatar and display name in the Widget Editor: a photo-style avatar with a human first name is what makes the AI nature non-obvious
  5. Name human agents distinctly on handover (the docs suggest a form like "Advisor [Name]") so a visitor can tell when the bot stopped answering
  6. Screenshot the teaser and the opened chat window, and keep a dated export of the widget settings
Keep proof. On a complaint, an authority will want to see that the disclosure was there and how it was designed. Keep timestamped screenshots of the first-interaction state, your widget configuration, and a record of when each was last changed.

Watch out for

moinAI ships an AI indicator, the 'generated' label beneath chatbot messages, and it is a setting an admin can leave off. The teaser compounds it: it can start the conversation on its own, so the first thing a visitor reads may be a bot message shown outside the chat window, where the indicator is least visible.

Common questions

The 'generated' label is on. Is that the disclosure?

Article 50(1) asks whether a visitor is informed they are interacting with an AI system. A label under a message arrives smaller and later than a sentence inside the message, and on a phone it often sits below the fold of the chat window. Keep the label and put the statement in the bot's first message.

Our teaser only says hello and links to a page, it does not answer questions. Does it count?

A fixed greeting that leads to a human channel is a weaker case than a bot that answers freely. If clicking the teaser starts an automated conversation, treat the teaser as the first interaction and disclose there.

Check it in one scan. DisclosureProof opens your site, triggers your moinAI widget and records whether the AI disclosure appears, with timestamped evidence either way. Run the free scan →