Terms of Service

1. Who these terms are between

Calvyn ("Calvyn", "we", "us") is a sole proprietorship operated by Ari Kleine in the State of California, United States. These Terms of Service (the "Terms") form a binding agreement between Calvyn and the person or organization that creates an account or uses the service (the "Customer", "you").

If you are agreeing to these Terms on behalf of a company or other organization, you represent that you have the authority to bind that organization, and "you" means that organization.

You must be at least 18 years old to create a Calvyn account.

2. What the service is

Calvyn lets you build conversational AI agents, give them knowledge you supply, and deploy them on your own website or other channels to talk to your users.

Calvyn is a software product, not a professional service. We are not a law firm, a medical provider, a financial adviser, or an agency, and nothing produced by a Calvyn agent is professional advice from us.

3. Your account

You are responsible for everything that happens under your account, including keeping your password secure and controlling who on your team has access. Tell us promptly at the contact address below if you believe your account has been compromised.

You may not share a single account across separate businesses, resell access to your account, or create accounts by automated means.

4. Plans, billing, and taxes

Calvyn offers a free plan and paid subscription plans. Current plans, prices, and included usage are listed at calvyn.io/pricing.

Paid plans are billed in advance through our payment processor, Stripe. By subscribing, you authorize recurring charges to your payment method until you cancel.

Subscriptions renew automatically for the same period unless you cancel before the renewal date. You can cancel at any time from the billing portal in your dashboard.

Some plans allow optional usage above the included allowance ("overage"). Overage is opt-in, is charged at the rate shown in your dashboard, and is subject to any spending cap you set. If you have not opted in, we stop service at your plan limit rather than charging you more.

Prices may change. We will give you at least 30 days’ notice by email before a price change affects your subscription, and the change takes effect at your next renewal. Continuing to use a paid plan after that date is acceptance of the new price.

Prices are exclusive of taxes. You are responsible for any sales, use, VAT, GST, or similar taxes, except taxes on our income.

If a payment fails, we may suspend paid features until it is resolved. We will try to reach you by email first.

5. Refunds — all sales are final

All fees paid to Calvyn are non-refundable, including partial subscription periods, unused message allowances, and overage charges already incurred.

We offer a genuinely free plan so that you can evaluate Calvyn fully before paying. Please use it. Because you can test the product at no cost before you subscribe, we do not offer trial-period or change-of-mind refunds.

When you cancel, your paid features remain active through the end of the billing period you have already paid for. We do not pro-rate the unused portion.

Nothing in this section limits any refund right you have that cannot be waived under applicable law.

If you believe you were charged in error — a duplicate charge, a charge after a confirmed cancellation, or a billing bug on our side — email us and we will investigate and correct genuine billing errors.

6. Your content, and who owns what

You keep ownership of everything you put into Calvyn: the knowledge sources you upload, your agent configuration and prompts, and the conversations your agents have with your users (together, "Customer Content").

You grant us a limited, worldwide, non-exclusive licence to host, copy, transmit, and process Customer Content strictly for the purpose of providing the service to you — for example, splitting a document into passages so an agent can retrieve the right one, or sending a conversation to our model provider to generate a reply.

We do not use Customer Content to train foundation models, and we do not sell it. See our Privacy Policy and Data Processing Addendum for the detail.

You are responsible for having the rights to the content you upload, and for making sure that uploading it and having an AI agent answer from it does not breach anyone else’s copyright, confidentiality, or privacy rights.

We own the Calvyn software, brand, and documentation. These Terms do not transfer any of that to you.

7. AI output — read this one

Calvyn agents generate text using large language models. Model output can be wrong, incomplete, outdated, or confidently mistaken, even when the underlying knowledge you supplied is correct.

You are responsible for reviewing how your agent behaves before you deploy it, and for the answers it gives your users once you do. Do not deploy a Calvyn agent in a situation where an incorrect answer would cause physical harm, legal harm, financial loss, or a safety incident without a human reviewing the output first.

You must not present a Calvyn agent as a human being to your users where doing so would be deceptive or is prohibited by law.

We do not guarantee that any two runs will produce the same output, and we may change the underlying models we use.

8. Acceptable use and indemnity

Your use of Calvyn must comply with our Acceptable Use Policy, which is part of these Terms.

You agree to indemnify and hold harmless Calvyn and its operator from any third-party claim, damages, loss, liability, and reasonable legal costs arising out of: (a) Customer Content; (b) the way you configured or deployed your agents; (c) answers your agent gave to your users; (d) your breach of these Terms or the Acceptable Use Policy; or (e) your violation of any law or third-party right.

We will tell you promptly about any such claim and let you control the defence, provided any settlement that admits fault on our behalf or imposes obligations on us needs our written agreement.

9. Warranty disclaimer and limitation of liability

THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE", WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED, OR STATUTORY, INCLUDING ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, OR NON-INFRINGEMENT.

We do not warrant that the service will be uninterrupted, error-free, or secure against every possible attack, or that AI output will be accurate. We do not currently offer a contractual uptime commitment or service-level agreement on any plan.

TO THE MAXIMUM EXTENT PERMITTED BY LAW, CALVYN WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR FOR ANY LOSS OF PROFITS, REVENUE, GOODWILL, BUSINESS, OR DATA, EVEN IF WE WERE ADVISED THAT SUCH DAMAGES WERE POSSIBLE.

TO THE MAXIMUM EXTENT PERMITTED BY LAW, CALVYN’S TOTAL AGGREGATE LIABILITY ARISING OUT OF OR RELATING TO THESE TERMS OR THE SERVICE WILL NOT EXCEED THE GREATER OF (A) THE TOTAL FEES YOU ACTUALLY PAID TO CALVYN IN THE TWELVE MONTHS IMMEDIATELY BEFORE THE EVENT GIVING RISE TO THE CLAIM, OR (B) ONE HUNDRED US DOLLARS (US$100).

Some jurisdictions do not allow the exclusion of certain warranties or the limitation of certain damages. Where that is the case, the exclusions and limits above apply to the fullest extent the law allows, and nothing here limits liability for fraud, wilful misconduct, or death or personal injury caused by negligence.

These limits are a fundamental part of the bargain between us. Calvyn is priced on the basis that they apply.

10. Suspension and termination

You can stop using Calvyn and delete your account at any time from your dashboard.

We may suspend or terminate your account if you materially breach these Terms or the Acceptable Use Policy, if your use creates a legal risk or a security or stability risk to the service or other customers, or if we are required to by law.

Where the circumstances reasonably allow it, we will give you notice and a chance to fix the problem before suspending a paid account. For serious abuse — illegal content, attacks against the service, or anything that puts other people at risk — we may act immediately.

If we terminate your account for breach, fees already paid are not refunded. If we discontinue the service entirely for reasons other than your breach, we will give you reasonable notice and refund the unused portion of any prepaid subscription.

After termination, we delete or de-identify your data as described in the Privacy Policy. Export anything you want to keep before you close your account.

11. Changes to the service and to these Terms

Calvyn is actively developed. We add, change, and occasionally remove features. We will not remove a material feature from a paid plan without giving you notice by email.

We may update these Terms. If a change materially reduces your rights or increases your obligations, we will give you at least 30 days’ notice by email before it takes effect, and continuing to use the service after that date means you accept the updated Terms. If you do not accept them, cancel before the effective date.

The "last updated" date at the top of this page always reflects the current version.

12. Governing law and disputes

These Terms are governed by the laws of the State of California, without regard to its conflict-of-laws rules. The United Nations Convention on Contracts for the International Sale of Goods does not apply.

Before filing anything, please email us and give us 30 days to resolve the problem informally. Most disputes are a misunderstanding and get fixed in a single email.

If we cannot resolve it, you and Calvyn agree that any dispute will be brought exclusively in the state or federal courts located in California, and both parties consent to the personal jurisdiction of those courts. Either party may bring a qualifying claim in small claims court instead.

TO THE EXTENT PERMITTED BY LAW, EACH PARTY WAIVES ANY RIGHT TO A JURY TRIAL AND AGREES THAT CLAIMS MAY ONLY BE BROUGHT IN AN INDIVIDUAL CAPACITY, NOT AS A PLAINTIFF OR CLASS MEMBER IN ANY CLASS OR REPRESENTATIVE PROCEEDING.

Nothing in this section prevents either party from seeking injunctive relief in any court of competent jurisdiction to protect its intellectual property or confidential information.

13. General

These Terms, together with the Privacy Policy, the Acceptable Use Policy, and (where it applies) the Data Processing Addendum, are the entire agreement between us about the service, and replace any earlier understandings.

If any provision is found unenforceable, the rest stays in effect and the unenforceable provision is limited to the minimum extent necessary.

Our not enforcing a provision on one occasion is not a waiver of it.

You may not assign these Terms without our written consent. We may assign them to a successor in connection with a merger, acquisition, or sale of substantially all of our assets.

Neither party is liable for failure to perform caused by events beyond its reasonable control, including outages at our hosting, model, or payment providers.

Nothing in these Terms creates a partnership, joint venture, agency, or employment relationship between us.

14. How to reach us

Calvyn’s address for legal notices is: Calvyn, PO Box 47615, Los Angeles, CA 90047, United States.

Legal notices may be sent to that address, or by email to legal@calvyn.io. Email notice is effective when sent, provided no bounce or delivery failure is received; postal notice is effective three business days after mailing.

General questions, billing problems, and privacy requests: hello@calvyn.io.

We will send legal notices to you at the email address on your account. Keep it current — notice to that address counts as notice to you.