Privacy

This website sets no cookies, runs no analytics or tracking, loads no third-party fonts or scripts, and stores nothing about you.

Ninefold is an invite-only assistant for one fantasy basketball league, made by Derinbay Labs. It has a web app at app.ninefold.derinbay.com and a Chrome extension.

What the extension reads: it runs only on the ESPN fantasy league pages you open and reads the league information shown on them. When you press the sign-in button in its popup, it reads two ESPN session cookies, SWID and espn_s2, once, only to sign you in. It never clicks, types or changes anything on ESPN.

What leaves your browser: the league information it read and, at sign-in, those two cookies are sent over HTTPS to the Ninefold server. The server uses the cookies once to check your ESPN session and league membership; espn_s2 is never stored or logged. Your SWID, ESPN's member id, is kept as your account identifier.

Where it is stored: your account, settings and league data live in our own backend (Google Cloud Run and a Neon PostgreSQL database, EU region). The extension keeps its settings and a small retry queue in your browser's own storage.

We do not sell your data or share it with anyone else. There are no ads and no analytics. Our hosting providers process the data only to run the service. The data is used only to give you Ninefold's advice, never for credit, lending or advertising decisions.

Deletion: email ninefold@derinbay.com and we delete your account and all data tied to it. Removing the extension deletes what it stores in your browser.