What we collect, and why.

Who we are

filter.fyi ("we", "the service") is operated by Johannes Pietsch, based in Amsterdam, the Netherlands — a pietsch.works project. We are the data controller for the personal data described here, and our business-registration (KvK) details are listed at pietsch.works. Privacy questions, data-subject requests, and content-removal requests: privacy@filter.fyi.

What we collect

If you sign up for product updates

• Your email address, and the optional challenge answers you tick.

If you use the service

• The URLs and content you submit for analysis, and the analysis we generate from them.
• If you create an account: your email address and your saved items.
• Limited technical data for security and rate-limiting: your IP address and a randomly generated anonymous ID stored in a cookie. These are kept short-term.

We don't ask for, or want, sensitive personal data. Please don't submit content you wouldn't want processed by an automated AI system.

How we use it & legal bases

You can withdraw consent for update emails at any time by emailing us — see "Your rights".

Who processes your data

We use a small number of trusted providers ("processors") to run the service. We don't sell your data and we don't share it for advertising.

Content you submit is sent to Anthropic to analyse it (the verdict, summary, and suggested next steps). They process it on our behalf and, on their standard API terms, do not use it to train their models. Some providers are based in the US; transfers are covered by Standard Contractual Clauses and/or the EU–US Data Privacy Framework.

Content you fetch, and automated analysis

When you submit a URL, we fetch that page on your instruction — like a browser or a read-it-later tool — and generate a short summary, a verdict, and suggested next steps. We act on the specific link you give us; we don't crawl the web or build datasets.

We keep only a condensed summary of the source, not a full copy. If a fetched page happens to contain other people's personal data (a name in an article, a post author), we hold only what survives in that short summary, use it solely to give you your analysis, and don't use it to profile anyone. If you're mentioned in stored content and want it removed, email privacy@filter.fyi.

The verdict and suggested next steps are produced automatically by an AI model. They inform you; they aren't a decision that produces legal or similarly significant effects on anyone, so this isn't "solely automated decision-making" in the sense of GDPR Article 22.

Cookies

We use only what's needed to run the service — no advertising or analytics trackers.

• fyi_session — keeps you signed in (strictly necessary).
• fyi_anon — a random ID used for fair-use rate-limiting before you sign in.

How long we keep it

• Product-update email — until you ask us to remove it.
• Saved items — a condensed summary plus your verdict and suggested next steps (not a full copy of the source); kept until you delete the item or your account.
• Fetched media (e.g. video/audio) — used transiently to produce the summary and not retained.
• Account email — until you delete your account.
• Rate-limit data (IP, anon ID) — short-lived; cleared on a rolling daily basis.
• Diagnostic error logs — about 30 days.

Your rights

Under the GDPR you can access, correct, export, or delete your personal data, and object to or restrict certain processing.

• Delete your account & data or export your data — from your library page once signed in, or by emailing us.
• Update-list removal — email privacy@filter.fyi and we'll delete your entry.

If you're in the EU/EEA, you also have the right to complain to your data protection authority (in the Netherlands, the Autoriteit Persoonsgegevens).

Changes

We'll update this page if our practices change and revise the date at the top. Material changes affecting you will be communicated by email where appropriate.