Guide
How it works
MasterHub is a hub of tools. Some are free, some are premium. This page explains access, billing, privacy, and cookies in simple terms.
Quick map
Jump to the section you care about.
Projects
Each project has a type and an access level.
- Internal: runs inside MasterHub (/p/[slug]).
- External: opens in a sandboxed viewer (/v/[slug]) with a strict allowlist.
- Public: anyone can open it.
- Premium: requires an active premium entitlement on your account.
Accounts & Library
When you sign in, the server issues a secure session cookie. Your Library lets you save projects for later.
- Sessions are stored in HTTP-only cookies (not accessible from JavaScript).
- Your Library list is tied to your account and can be synced server-side.
Billing & Stripe
Checkout and account management are handled through Stripe. You can start, cancel, or update billing from the Billing page.
Privacy
We collect only what we need to run the service securely (sessions, basic account identifiers, and usage logs for security).