What GWTTKB collects, why, where it goes, and how to get rid of it.
The short version. GWTTKB is free, with no account and no ads. We do not sell your data or share it for advertising. Most of what you give us stays in your own browser. The few things we do keep are listed below, with how to delete them.
Every league connection is read-only. We never add, drop, trade or change anything in your leagues.
These are kept in a private file in our own code repository, which only GWTTKB can access. We use them to give you more Coach answers a day, to run the Open, and to email you about GWTTKB. Every email we send will have a way to stop them. We do not keep IP addresses with any of this.
When you ask a question, your question, the conversation so far, and the league and player data needed to answer it are sent to Anthropic, whose Claude models write the answer. Under Anthropic's commercial terms, that data is not used to train their models.
Your Sleeper username and email (if you gave them) and a random ID for your device go to our server only to count your free questions for the day. If you rate an answer, the question and any note you write go to our server logs so we can fix bad answers. Answers are AI-generated and can be wrong; see the Terms.
We count page views with Vercel Web Analytics, which uses no cookies and does not identify you. Our host, Vercel, keeps standard server request logs (which include IP addresses) for a limited time for security and operations. We don't copy or keep them.
These live in your browser's own storage on your device, not on our servers: your Coach chats, connected leagues and which team is yours, Live parlays and alert settings, page settings, and your daily question count. Screenshots you scan (trade screens, parlay slips) are read on your device and never uploaded. To delete all of it, clear this site's data in your browser settings.
Player photos and team logos load from ESPN's and Sleeper's image servers. Fonts load from Google Fonts. When you scan a screenshot, the text-reading library loads from jsDelivr. Like any website you load, these services see your IP address and browser type. They get nothing else from us.
If you live in California or another state with a privacy law, you have the right to know what we collect, to have it deleted, and to opt out of its sale or sharing. We don't sell or share it, and we will never treat you differently for using these rights.
GWTTKB is not meant for children under 13, and we don't knowingly collect anything from them. If you think a child gave us an email, write to us and we'll delete it. The props and odds tools (True Odds, the Research Agent, Player and Team Lines, Live parlays) are for adults 21 and older. See the Terms.
Everything travels over HTTPS. League sessions are kept in secure cookies your browser's scripts can't read, our API keys never reach the browser, and ESPN sign-in attempts are limited. No system is perfectly secure; if something ever went wrong with data we hold, we would tell the people affected.
When this policy changes, the new version goes on this page with a new effective date. Questions or requests: privacy@gwttkb.com.