Terms of Service

The agreement

By creating an account or using Estelle (the web app, dashboard, API at api.fatelabs.ca, hosted MCP server, or CLI), you agree to these terms. If you use Estelle on behalf of an organization, you confirm you are authorized to bind that organization, and “you” means that organization. If you do not agree, do not use the service.

Accounts

You are responsible for your account and for keeping your credentials secure. You must provide accurate information, you must be at least 18 years old, and you are responsible for the activity of teammates you invite into your workspace. Tell us promptly at khai@fatelabs.ca if you suspect unauthorized use of your account.

Bring your own key

Estelle is bring-your-own-key: you supply the API key or plan for your own model provider, and Estelle uses it to call that model on your behalf. Because of this:

• You are responsible for your model provider bill, and for complying with that provider's terms of service and usage policies.
• You confirm you are permitted to use the key you supply, and to send it the code and content you send.
• Estelle does not mark up your model tokens and does not route your model traffic anywhere except to the provider you selected.
• We are not responsible for your provider's availability, output quality, pricing, or how that provider handles the traffic you send it.

Acceptable use

You agree not to use Estelle to:

• Break the law, infringe others' intellectual property, or violate anyone's privacy.
• Upload or process content you do not have the rights to, or that you are barred from sending to your model provider.
• Attempt to break, overload, reverse-engineer, or circumvent the service, its rate limits, its metering, or its security, including the tenant-isolation boundary.
• Access another customer's namespace or data, or attempt to.
• Resell or sublicense the service except as expressly permitted, or use it to build a competing service by scraping it.
• Generate malware, run unlawful automation, or use the service to harm others.

We may suspend or limit access to protect the service or other customers if we reasonably believe these terms are being violated. Specific rate limits and fair-use thresholds are described in your plan and the docs.

Your content & IP

Your code, your content, and the memory Estelle derives from them are yours. You grant Fate Labs only the limited license needed to operate the service for you: to store, index, embed, and process your content so Estelle can provide grounded memory and verification back to you, and to transmit it to the model provider whose key you supplied.

We do not acquire ownership of your content, and, consistent with the Privacy Policy, we do not use your code content to train models or to improve the product for other customers.

Our IP

Estelle, Fate Labs, the software, the models and systems we build, and the site are our intellectual property or licensed to us. These terms grant you a limited, non-exclusive, non-transferable, revocable right to use the service while your account is in good standing, and nothing more. Any feedback you send us may be used to improve the product without obligation to you.

Plans & billing

Estelle offers a free tier and paid plans. Paid plans bill for capacity, seats, and overflow, as described on the pricing page. Your model tokens are billed by your provider, not by us.

• Subscriptions renew automatically for the interval you chose unless cancelled before renewal. You can cancel anytime; access continues to the end of the paid period.
• Fees are charged through Stripe. Except where required by law, fees are non-refundable and we do not pro-rate partial periods.
• We may change prices with at least 30 days' advance notice; changes take effect on your next renewal after that notice.
• Taxes are your responsibility where applicable.

Free trials & creator codes

Paid plans have no free trial. Without a code, your first payment is taken when you subscribe.

• The Estelle launch code we share publicly, entered at checkout, gives a 14-day free trial of the Pro plan, billed monthly. You add a payment method in Stripe at checkout. If you cancel before the trial ends, you are not charged. If you do not cancel, the subscription continues and your payment method is charged on day 15. The launch code can be redeemed only from October 27 through November 27, 2026.
• A creator code entered at checkout gives one month of the Pro plan, billed monthly, free. After the free month, the subscription renews at the normal price unless you cancel.
• Codes apply only to the Pro plan with monthly billing, not to yearly billing or to any other plan.
• One free period per person, ever. A free period is a launch-code trial, a creator-code free month or a promo-code trial. Once you have had one, no code gives you another: not after cancelling and subscribing again, not with a different code, and not on another account that uses the same email address (including its +tag or, for Gmail, dotted forms) or the same payment card. A free period is not available to an account that has ever had a paid plan, or to a member of a team.
• Only one checkout with a code can be open for an account at a time. A second one is refused until the first is completed or expires.
• A free period counts as used once its checkout is completed, even if you cancel it the same day. If we find at checkout that a free period was already used by your account, email address or card, we cancel the new subscription immediately, before any charge, and tell you by email; you can still subscribe at the normal price. We may also decline or end a free period we reasonably believe is a repeat by the same person under another account or address.
• You cannot use your own creator code.
• Trials and code offers have no cash value and may be withdrawn or changed for new sign-ups at any time.

Creator program

Creators approved by Fate Labs receive one personal creator code. When a new customer subscribes with that code, the creator earns a commission on that customer's payments.

• Commission is 10% of the referred customer's payments to us (15% for creators we have verified), excluding taxes, for 12 months from the referral.
• A month's payment counts only once the customer's next billing period has started and that period's invoice has been issued (paid or awaiting payment). A customer's final month before cancelling therefore earns nothing. Team plans are excluded, and the shared launch code earns no commission for anyone.
• If a counted payment is later refunded or charged back, the matching commission is clawed back from the creator's current or future earnings.
• One code per person. Self-referral is not allowed: using your own code, or referring an account you own or control, earns nothing.
• We compute earnings monthly and pay them manually, in USD. Contact us for your payment details at khai@fatelabs.ca. We may require tax and payment details before paying.
• We may void a code, an attribution, or unpaid earnings obtained through abuse, including fake or duplicate accounts, paying or otherwise incentivising people to sign up, spam, misleading claims about Estelle or Fate Labs, or bidding on Fate Labs or Estelle trademarks in paid search.
• We may change or end the creator program with notice. Earnings already counted under the rules in force at the time are still paid, subject to clawbacks.
• Creators are independent and are not employees, agents, or partners of Fate Labs, and may not make commitments on our behalf.

Drafts, previews & changes

Estelle is under active development. Some capabilities are preview or beta and may change or be withdrawn. We may update these terms; if a change is material we will give reasonable notice (for example, by email or an in-product notice), and continued use after the change takes effect means you accept the updated terms.

No warranty

Estelle is provided “as is” and “as available”, without warranties of any kind, whether express or implied, including merchantability, fitness for a particular purpose, title, and non-infringement, to the maximum extent permitted by law. We do not warrant that the service will be uninterrupted, error-free, or secure.

Estelle reduces model guessing by grounding answers in your real code and gating what it cannot prove, but it is a tool: it does not guarantee that generated code is correct, secure, or fit for your purpose. You remain responsible for reviewing and testing anything you ship. Some jurisdictions do not allow certain warranty exclusions, so parts of this section may not apply to you.

Limitation of liability

To the maximum extent permitted by law, Fate Labs is not liable for indirect, incidental, special, consequential, exemplary, or punitive damages, or for lost profits, revenue, data, or goodwill, arising from or relating to your use of Estelle, even if we were advised of the possibility.

Our total aggregate liability for any and all claims relating to the service is capped at the greater of (a) the fees you paid us for the service in the 12 months before the event giving rise to the claim, or (b) US $100. Nothing in these terms limits liability that cannot be limited by law (for example, liability for fraud or willful misconduct).

Indemnity

You agree to defend and indemnify Fate Labs and its officers, directors, and employees against third-party claims, damages, and reasonable costs arising from: your content; your use of the service in violation of these terms or the law; or your breach of your model provider's terms. This does not apply to claims that Estelle's own software, as provided by us, infringes a third party's rights.

Termination

You can stop using Estelle and delete your account at any time. We may suspend or terminate access for a material breach of these terms, for non-payment, or to comply with the law, with notice where practicable.

On termination, your right to use the service ends. Before you close your account you can export your data (see Your rights & controls); after closure, your namespaces are deleted, subject to the retention periods in the Privacy Policy. Sections that by their nature should survive termination (IP, disclaimers, limitation of liability, indemnity, governing law) do survive.

Governing law & disputes

These terms are governed by the laws of the Province of Ontario, Canada, and the federal laws of Canada applicable there, without regard to conflict-of-law rules. You and Fate Labs agree to the exclusive jurisdiction of the courts located in Ontario, Canada for any dispute that is not otherwise resolved. If any provision is held unenforceable, the rest stays in effect.

Contact

Questions about these terms: khai@fatelabs.ca. Estelle is operated by Honour Systems Inc. (incorporated in Ontario, Canada), doing business as Fate Labs.