Terms of service

These terms are an agreement between you and Chasca (“Chasca”, “we”, “us”) for the use of the Chasca website at trychasca.com, the Chasca app, the API, the SDK, the command-line tool and the MCP server (together, the “Service”). By creating an account or using the Service you agree to these terms, to our acceptable use policy, which forms part of them, and you acknowledge our privacy policy. If you do not agree, please do not use the Service.

1. The Service

Chasca makes narrated whiteboard explainer videos from a prompt, a document, a web page or an image. It uses artificial intelligence to read your sources, write a script, plan and draw scenes and record a narration, then renders a video you can edit, download and share. Features may change as we improve the Service.

2. Your account

• You must be at least 13 years old to create an account, or older if the law where you live sets a higher age for using online services without a parent’s permission. If you are under the age of majority where you live, you may use Chasca only with the permission of a parent or guardian, who accepts these terms for you.
• Give us accurate information, and confirm your email address when asked.
• Keep your password and API keys confidential. You are responsible for everything done with your account and keys. Tell us promptly if you think someone else has used them.
• If you use Chasca for an organisation, you confirm you are authorised to accept these terms on its behalf, and “you” includes that organisation.
• One person, one free account: do not create several accounts to get more free videos or referral credits.

3. Plans, minutes and payment

• Free videos. New accounts include a small number of free videos, up to one minute each, which carry a Chasca watermark. The current allowance is shown on the pricing page.
• Paid plans. Paid plans are monthly subscriptions. Each is paid at the start of its monthly period and renews automatically every month until you cancel. The price, the minutes included and any other limits are those shown on the pricing page when you buy.
• Payments. Payments are processed by Dodo Payments, which acts as our Merchant of Record and authorised reseller. It runs the checkout, charges your payment method, collects any tax due and sends your receipt, and its own buyer terms also apply to your purchase. We do not see or store your full card details.
• Minutes. Plans include a number of rendered minutes per monthly cycle. Unused minutes do not roll over. Moving to a bigger plan takes effect at once: its full price is charged that day, nothing already paid is refunded, a new monthly cycle starts that day, and the minutes you have left carry into it. Moving to a smaller plan takes effect at your next billing date. If a renewal payment does not go through, your account moves to the free plan when the cycle ends; we try the payment again for up to 7 days, and if it goes through a new cycle starts then. Videos made through the API, SDK, command-line tool or MCP server count at the multiplier shown on the pricing page. Minutes are not sold one by one: when they run out, you can move up a plan or wait for your next cycle.
• Cancelling. You can cancel at any time in the app, in Settings, Billing. Your plan stays active until the end of the period you have paid for, then your account returns to the free plan and you are not charged again. Your videos stay in your account.
• Refunds. Payments are non-refundable, except as our refund and cancellation policy describes and where the law requires a refund. In short, if the videos do not meet your expectations, we refund a plan payment when you ask from Feedback in the app within 7 days of the charge and have used less than half of that period’s minutes. Charges made in error are always refunded.
• Prices and taxes. We may change prices for future periods with reasonable notice before they apply to you. Prices do not include taxes unless stated, and you are responsible for any taxes that apply.
• Referral credits and promotions have no cash value, cannot be transferred, and may expire or be withdrawn if they were obtained by breaking these terms.

4. Your content

“Your content” means what you give the Service (prompts, documents, links, images, recordings, reference videos, logos and settings) and what the Service makes for you from it (scripts, scene plans, narration, captions and videos).

• You own your content. As between you and Chasca, you keep all rights you have in what you upload, and we assign to you any rights we may have in the videos, scripts and other output made for you, to the extent the law allows. You may use your videos for any lawful purpose, including commercially, subject to the watermark on free videos.
• The licence you give us. You grant us a worldwide, non-exclusive, royalty-free licence to host, copy, process, transform and display your content only as needed to provide, secure and support the Service for you, including sending it to the service providers named in our privacy policy, and to show a video to anyone with its share link while you keep that link on. This licence ends when you delete the content or your account, except for copies we must keep by law.
• No training. We do not use your content to train AI models.
• Your responsibility. You confirm that you have the rights and permissions needed for everything you give the Service, including the text of documents and web pages you ask it to read, images and logos, and any voice or likeness in reference recordings, and that your content and its use do not break the law or anyone’s rights.

5. AI-generated output

• Videos are made with AI and may contain mistakes, omissions or statements that are out of date. Review every video before you rely on it, publish it or use it to teach. Do not rely on Chasca for medical, legal, financial or other professional advice.
• Because of how AI works, other users may receive output similar to yours. Output made for others is not your content.
• The drawings, icons and voices Chasca uses are part of the Service. You may use them as they appear in your videos; you may not extract them to build a competing library, voice or service.

6. Sharing

When you turn on a share link for a video, anyone with the link can watch it until you turn the link off or delete the video. You are responsible for whom you share it with and for what the video contains.

7. The API and automation

• API keys belong to your account; do not share them or put them in public code. The API, SDK, command-line tool and MCP server are subject to the rate limits and documentation published at /docs.
• We may rate-limit, suspend or revoke keys or access that endangers the Service or other users, or that breaks these terms.
• If you build a product on the API, you are responsible for your own users and for your use of their data, and you must not present Chasca’s output as reviewed by us.

8. Acceptable use

You must follow our acceptable use policy. In short: no unlawful, harmful, hateful, deceptive or infringing content; no impersonation or misleading synthetic media of real people; and no attempts to break, overload or misuse the Service.

9. Chasca’s rights

The Service, including its software, design, drawings, icon library, voices, templates and brand, belongs to Chasca and its licensors and is protected by law. These terms give you the right to use the Service as described here and nothing more. Do not copy, resell, reverse-engineer or scrape the Service, or use it to build a competing product. If you send us ideas or feedback, we may use them without any obligation to you.

Parts of Chasca build on open-source software, including the Sketchy Icon Library and the explainer-evals harness by Sketchie, both under the MIT licence. Their licences continue to apply to those components.

10. Third-party services and links

The Service relies on third parties, such as AI model providers, and may read or link to websites we do not control. We are not responsible for third-party websites or services, and your use of them is subject to their own terms.

11. Suspension and ending your use

• You can stop using Chasca and delete your account at any time in the app under Settings, Account.
• We may suspend or close an account, remove content or refuse a request if we reasonably believe it breaks these terms or the law, puts other people or the Service at risk, or if we are required to. Where it is reasonable, we will tell you why and give you a chance to fix the problem first.
• If we stop offering the Service, we will give reasonable notice so you can download your videos.
• Sections 4 (the parts about responsibility), 5, 9 and 12 to 15 continue to apply after your use ends.

12. Disclaimers

We work hard to keep Chasca available, accurate and secure, but the Service is provided “as is” and “as available”. To the extent the law allows, we make no warranties of any kind, express or implied, including that the Service will be uninterrupted or error-free, that output will be accurate or fit for a particular purpose, or that content will never be lost. Keep your own copies of videos that matter to you.

13. Limitation of liability

To the extent the law allows, Chasca is not liable for indirect, incidental, special, consequential or punitive damages, or for lost profits, revenue, data or goodwill, arising from or related to the Service. Our total liability for all claims relating to the Service is limited to the greater of the amount you paid us for the Service in the 12 months before the claim arose and 50 US dollars. Nothing in these terms limits liability that cannot be limited by law, such as for fraud, or the rights you have as a consumer under the laws of your country.

14. Indemnity

If someone brings a claim against Chasca because of your content, your use of the Service or your breach of these terms, you agree to cover the reasonable losses and costs (including legal fees) that result, to the extent the law allows. This does not apply to the extent the claim is caused by our own fault.

15. Governing law and disputes

These terms are governed by the laws of India. Before starting any formal proceedings, please contact us so we can try to resolve the issue informally. Courts in India have jurisdiction over disputes about these terms, but if you are a consumer living elsewhere, you also keep the protection of the mandatory laws of your country and may bring a claim in its courts.

16. Changes to these terms

We may update these terms as the Service changes. The date at the top shows the latest version. We will tell you in the app or by email before a significant change takes effect; if you keep using the Service after that, the new terms apply. If you do not agree, you can stop using Chasca and delete your account.

17. General

These terms, the acceptable use policy and the privacy policy are the whole agreement between you and us about the Service. If any part is found unenforceable, the rest stays in effect. If we do not enforce a right straight away, we can still enforce it later. You may not transfer these terms without our consent; we may transfer them as part of a merger, acquisition or sale of the Service.

18. Contact

To reach us, sign in and send a message from Feedback in the app’s sidebar; our contact page explains how. We reply by email to the address on your account.