Terms of service

Last updated November 6, 2026

These terms apply when you use Rulebook. By signing in, you agree to them. Questions go to support.rulebook@gmail.com.

What Rulebook does

Rulebook lets a team test the rule sheet (prompt) behind their AI product across Claude, ChatGPT and Gemini, edit it, see which answers got better or worse, and send changes to their engineers as GitHub pull requests.

Your account

You sign in with GitHub. You're responsible for what happens under your account and for the people you invite to your team.

Plans and billing

• Your own AIs: $29 per month per team. Runs use the AI keys your team adds, and your AI providers bill you directly for that usage.
• AI included: $59 per month per team, including 50 runs per month on our AI keys. Unused runs don't carry over.
• Plans renew monthly until canceled. You can cancel at any time from the Billing page and keep access until the end of the period you've paid for.
• We may change prices. If we do, we'll tell you before your next renewal.

Your content

Your rule sheets, situations and test results belong to you. You give us permission to store them and to send them to the AI providers you turn on, only to run your tests. Make sure you have the right to use anything you put into Rulebook.

AI output

Answers and scores come from AI models and can be wrong. The judge's better/worse verdicts are a guide, not a guarantee. Review changes before you merge them. Your engineers stay in control of what goes live.

Fair use

Don't use Rulebook to break the law, to attack or overload the service, or to break the terms of the AI providers or GitHub. We may suspend accounts that do.

No warranty

Rulebook is provided as is. We work to keep it running and accurate, but we can't promise it will always be available or error-free. To the extent the law allows, our total liability is limited to what you paid us in the three months before the claim.

Changes

If we change these terms, we'll update the date at the top of this page.