OPGenAI
Terms of Use
Effective September 19, 2026
What this is
This service, operated at opgen.ai, is a membership product for reviewing your own Hearthstone games with OP, an AI you talk to: a desktop app that reads your own local game logs and reconstructs your games, this web companion for talking about them, and OP at the table while you are still playing. Using any of it means you agree to these terms and to the Privacy Policy.
Early access
This service is in early access: it is new and still being built, and what you see today is not a promise about tomorrow. Features, limits, prices, models, and the shape of the app and this site can be added, changed, paused, or removed without notice, and nothing you have seen or used obliges us to keep it as it was. If a change isn't for you, you can cancel — see Membership and billing, below.
Your account and connected PC
Website access is through your account. Connecting the desktop app mints a separate setup token for that PC; keep it secret and don't share or resell it. We can rotate a device token if it leaks and suspend credentials that are abused.
Membership and billing
A membership is sold by the month or by the year, and it renews automatically at the end of each period until you cancel. Cancelling stops the next renewal; the period you have already paid for runs to its end, and it is not automatically refunded. You can cancel at any time from your account.
A new account gets a free week of OPGen: a small allowance of usage, with no card, good for seven days from sign-up or until it is used up, whichever comes first. It is given once per account and is rationed by the day, so on a busy day it can pause until the next. When it ends nothing is charged and nothing needs cancelling. The account is simply a Free Plan account, and capture, replays and decks stay free. There is no card-up-front trial.
Prices and tiers can change, as early access says above. A change to what you pay takes effect at your next renewal, never retroactively.
Budgets and cost
OPGen costs real money to produce, so every membership carries a usage budget that resets each calendar month — on a yearly membership too, which pays for a year of the same monthly budget rather than a year's worth at once. When the budget runs out OP stops until the month turns. The higher tier can instead buy prepaid credit and keep going: that is always a purchase you make deliberately, never an automatic charge, and the credit does not expire — though it can only be spent while the membership is active, so cancelling freezes an unspent balance rather than taking it.
Everything that never calls the AI is free and stays free — watching your own replays, filtering cards, reading reviews you already have.
What does spend the budget: reviews, which run only when you ask for one; live chat while you have it on, meaning both your mid-game questions and, if you say yes for that game, the lines OP offers on its own turn; searches you type in your own words; and, when sync and OPGen are both on, the background pass that keeps your Hearthstone profile up to date. That last one is the only thing that spends without you asking each time. The Privacy Policy describes what it does, and turning off OPGen or sync stops it.
AI advice is advice
OP grounds its answers in your game's own log and labels what is fact and what is inference. But it is AI output and can be wrong. It is offered as analysis to consider, not a guarantee. No promise of rank, win rate, or results is made or implied.
Fair use
Don't attempt to break, probe, or overload the service, extract other people's data, automate bulk requests against it, or use it for anything unlawful. The product is for reviewing games you played yourself.
Your content stays yours
Your games, decks, rules, and chats are yours. You give us only the permission needed to operate the product, which is storing what you chose to sync and processing what you send to OP — reviews, live-game asks, searches you type, and the profile pass — and keeping what OP was shown and what it said beside what you did next, to make OP better, as described in the Privacy Policy.
Not affiliated with Blizzard
This service is not affiliated with, endorsed by, or sponsored by Blizzard Entertainment. Hearthstone is a trademark of Blizzard Entertainment, Inc. The desktop app reads the log files Hearthstone itself writes on your machine. It does not modify the game, overlay it, or play it for you.
Card and game imagery
Card images shown in this service are requested by your browser directly from HearthstoneJSON, a community project that is not affiliated with this service or with Blizzard Entertainment. A small number of board and interface images are served by us. All Hearthstone imagery remains the property of Blizzard Entertainment, Inc.
Ending things
You can stop using the service anytime; your local files remain yours, and you can ask us in Report to delete your synced data and your account. Cancelling a membership and deleting your data are separate requests: cancelling stops the billing, deleting removes what is stored. We may suspend or end access for abuse of these terms.
No warranty
The service is provided as-is, without warranties of any kind. To the extent the law allows, our liability for any claim related to the service is limited to the amount you paid for it in the month the claim arose — and on a yearly membership, to one month's share of what you paid for that year.
Changes
If these terms change, the new version is posted here with a new effective date.
September 1, 2026: these terms said memberships were month to month; yearly memberships now exist, so billing, renewal, trials, and prepaid credit are set out in Membership and billing above, and the liability cap says what it means for a yearly payer. "Nothing bills in the background" was not true of the background pass that maintains your Hearthstone profile, so that section now names everything that spends the budget instead.
September 19, 2026: the AI you talk to is named OP, and the paid part of the product is OPGen. These terms used an older word for both; they now use their names. What the terms bind did not change.
September 19, 2026: the card-up-front trial is gone and the terms now describe what a new account actually gets, a free week of usage with no card. The Budgets section is unchanged: a paid membership's budget still resets each month.
Contact
Report, in the desktop app and on this site, is a direct line to the operator and the fastest way to reach us about anything here.