Terms of Service

Last updated: 31 March 2026

1. What this is

deny.sh provides deniable encryption software and APIs. These terms govern your use of the deny.sh website, API, CLI tool, and SDK (the "Service"). By using the Service, you agree to these terms.

2. Who we are

deny.sh is operated by Alexander Levin ("we", "us"). Contact: hello@deny.sh.

3. Accounts and API keys

To use the API, you register with an email address and receive an API key. You are responsible for keeping your API key secure. We may suspend keys that are used abusively or in violation of these terms.

4. Acceptable use

You may use the Service for any lawful purpose. You may not:

• Use the Service to facilitate illegal activity
• Attempt to compromise, overload, or reverse-engineer the Service infrastructure
• Resell API access without a commercial license
• Misrepresent your use of the Service (e.g. claiming our encryption as your own product without proper licensing)

5. Pricing and billing

Free tier: 100 API calls per month. Paid tiers are billed monthly via Stripe. You can cancel at any time through the Stripe customer portal. No refunds for partial months.

6. Open-source license

The deny.sh SDK and CLI are licensed under AGPL-3.0. Commercial licenses are available for proprietary use. See the repository for details.

7. Zero knowledge

The browser demo runs entirely client-side. We do not see, store, or transmit your passwords, messages, or control files when you use the browser demo. API requests are processed in memory and not logged beyond usage metering.

8. No warranty

The Service is provided "as is" without warranty of any kind. We do not guarantee uptime, and we are not liable for data loss. Cryptographic software is provided for informational and educational purposes. You are responsible for evaluating whether the Service meets your security requirements.

9. Limitation of liability

To the maximum extent permitted by law, we are not liable for any indirect, incidental, or consequential damages arising from your use of the Service. Our total liability is limited to the amount you have paid us in the 12 months preceding the claim.

10. Changes

We may update these terms. Continued use after changes constitutes acceptance. Material changes will be announced on the website.

11. Governing law

These terms are governed by the laws of England and Wales.