Terms of use

Last updated: 15 November 2026

This agreement is between you and Jentera AI Sdn Bhd ("we", "us"), a company registered in Malaysia (registration no. 202601042741), and covers the CastSpell app for Mac and any updates we provide ("CastSpell"). By installing or using CastSpell you agree to it. If you don't agree, don't install or use CastSpell. You must be 18 or older, or the age of majority where you live.

1. Licence

We grant you a personal, non-exclusive, non-transferable licence to install and use CastSpell on devices you own or control, under the plan you're on:

• Free: every feature, limited to 3 projects with up to 5 spaces in each.
• Pro: no project or space limits, while your subscription is active. One Pro licence may be active on up to 5 devices at a time. You can move it by deactivating a device in Settings → Plan or at castspell.dev/account.

CastSpell is licensed, not sold. We and our licensors keep all rights not expressly granted to you.

2. What you may not do

Except where the law gives you a right we can't take away, you may not:

• copy, sell, rent, sublicense or redistribute CastSpell, or publish it for others to download;
• decompile, disassemble or reverse engineer CastSpell, or try to extract its source code;
• remove, bypass or interfere with the licence check, plan limits or other technical protections, or share a licence beyond the 5-device limit;
• use CastSpell to break the law or the terms of services you connect to it.

3. Subscriptions, payment and refunds

• Pro is sold as a monthly or yearly subscription through our payment provider, Stripe. Prices are shown at checkout.
• If we change the price, we'll email you at least 30 days before it applies to your next renewal, so you can cancel first.
• Subscriptions renew automatically until you cancel. You can cancel any time from Settings → Plan → Manage subscription or at castspell.dev/account. Pro stays active until the end of the period you paid for.
• Refunds: if you're not happy, email [email protected] within 14 days of any payment (first purchase or renewal) and we'll refund that payment in full, no questions asked. If you're a consumer in the EU or UK, this also covers your 14-day right to withdraw from your first purchase. A refund cancels your subscription and ends Pro straight away. If you open a payment dispute, Pro ends while it is open. Consumers in some countries have a legal right to withdraw from a purchase; nothing here limits it.
• Discounts (such as Black Friday or education pricing) apply only as stated when offered.
• If Pro ends, nothing is deleted or locked. You keep your projects and spaces; you can't add more beyond the Free limits until you subscribe again.

4. Licence checks and your data

• CastSpell runs on your Mac. Your code, conversations and files stay on your Mac or the machines you connect. Signing in with your email is optional; it turns on Pro without a licence key.
• To check a Pro licence, CastSpell sends our licence server your licence key or sign-in session, a random install ID and the name of the device (shown to you in the list of activated devices). It does not send anything about your work. CastSpell keeps working offline for a period after the last successful check.
• When you buy Pro, Stripe processes your payment details; we receive your email address and purchase information to deliver and manage your licence. In our licence database we store email addresses only in a hashed form, for signing in to the app and to castspell.dev/account.
• If you send feedback from the app, we receive your message and, only if you choose to include them, your email address, app and device details, recent app log lines and a screenshot.
• See our Privacy Policy at castspell.dev/privacy for details.

5. Third-party agents, models and services

CastSpell works with agent tools and services you choose and pay for yourself (for example Claude Code, Codex, opencode, Hermes, fal.ai, and remote machines you connect over SSH). Your use of them is governed by their own terms, and any charges they make (including model usage and image or video generation) are between you and them. We're not responsible for their output, availability or charges.

AI agents can make mistakes, change or delete files, and run commands. You are responsible for reviewing what they do, for the permissions and sandbox settings you choose, and for keeping backups.

6. Updates

CastSpell checks for updates and may download them in the background. It installs an update only when you choose to restart. We may change or remove features over time.

7. Open-source components

CastSpell includes open-source software (for example herdr-core, under the Apache License 2.0). Those components are licensed under their own terms, which are included with CastSpell, and nothing in this agreement limits your rights under them.

8. Warranty

CastSpell is provided "as is" and "as available". To the extent the law allows, we disclaim all warranties, including fitness for a particular purpose and non-infringement. We don't promise that CastSpell will be error-free or uninterrupted. Some places don't allow these exclusions; in those places they apply only as far as the law permits, and your statutory consumer rights are not affected.

9. Limitation of liability

To the extent the law allows, we are not liable for indirect, incidental, special or consequential losses, or for loss of data, profits or business, including losses caused by AI agents or third-party services. Our total liability for any claim is limited to the amount you paid us for CastSpell in the 12 months before the claim. Nothing here limits liability that can't be limited by law (for example for death or personal injury caused by negligence, or fraud, gross negligence or wilful misconduct), or your legal rights as a consumer, including remedies for digital content that is faulty or damages your device or data.

10. Ending this agreement

You can stop using CastSpell at any time. We may end your licence if you seriously break this agreement (for example by sharing keys or bypassing the licence check); we'll tell you by email where we can. Sections 2, 5, 8, 9 and 11 survive the end of this agreement.

11. General

• Law: this agreement is governed by the laws of Malaysia, and the courts of Malaysia have non-exclusive jurisdiction. If you're a consumer, you may also bring a claim in the courts where you live, and nothing here takes away any mandatory consumer protections of the country where you live.
• Changes: we may update this agreement. We'll post the new version at castspell.dev/terms with its date, and tell Pro subscribers by email about material changes before they apply.
• If any part of this agreement can't be enforced, the rest still applies.
• Contact: Jentera AI Sdn Bhd, No 20, Mezzanine Floor, Level 2, Jalan SS 2/61, SS 2, 47300 Petaling Jaya, Selangor, Malaysia. Email: [email protected]