Terms of service

Effective Date: 6th November 2025

Last Updated: 6th November 2025

Welcome to MetaCert

These Terms of Service (“Terms”) form a binding agreement between you (“you” or “your”) and MetaCert Inc., a company incorporated in the United States (“MetaCert,” “we,” “our,” or “us”).

By using any MetaCert product or service – including Link Verifier, Cryptonite, or the Zero Trust API – you agree to these Terms. If you do not agree, do not access or use our products or services.

1. Overview

MetaCert provides technologies designed to help people and organisations reduce the risk of phishing (online impersonation) by applying a Zero Trust model to web links. Our products give individuals, businesses, and partners’ customers more information with which to make better decisions about which links to trust.

While MetaCert’s systems are built to improve safety, no security technology can guarantee complete protection from phishing. By using MetaCert products or services – directly as a customer, or indirectly through a third-party application powered by MetaCert’s technology – you acknowledge that you remain responsible for exercising caution and independent judgment online.

2. Scope

These Terms apply to the following MetaCert products and services:

Link Verifier (iOS App) – MetaCert’s mobile app distributed via Apple’s AppStore that performs URL authentication using MetaCert’s Zero Trust model. When installed, it includes two components:

  • An Actions Extension within the iOS share sheet menu that allows people to verify any web link from within compatible apps without leaving the app.

  • A Safari Extension that displays MetaCert’s verification shield inside Safari and automatically checks classifications before a page loads.

Cryptonite (Browser Extension) – MetaCert’s browser extension for desktop environments that classifies and displays the authenticity of web links in real time using the same Zero Trust system as Link Verifier.

Zero Trust API and SDK (Developers) – MetaCert’s developer platform that allows approved partners, including banks, payment companies, mobile network operators, and app developers, to embed MetaCert’s URL verification within their own systems.

Future products or services introduced by MetaCert will also be covered by these Terms unless expressly stated otherwise.

3. Accounts and Access

3.1 Eligibility

You must be at least 18 years old to use MetaCert products or services. By using them, you confirm that you meet this requirement.

3.2 Account Creation

Some features require a MetaCert account. You agree to provide accurate information and maintain the confidentiality of your credentials.

3.3 Subscription and Billing

Paid services are billed through authorised payment processors such as Stripe or through platform providers such as Apple’s App Store. For Cryptonite, Link Verifier, and any other paid MetaCert products, subscription terms are displayed during checkout or within the relevant app store listing. Purchases made through the App Store are subject to Apple’s payment terms and refund policies, and MetaCert does not process or manage those transactions directly. 

3.4 Termination

You may terminate your account at any time. MetaCert may suspend or terminate access if you breach these Terms, misuse our services, or engage in activity that could harm MetaCert, other customers, or our infrastructure.

4. Use of Services

4.1 Permitted Use

You may use MetaCert products only for lawful purposes and in compliance with these Terms and applicable law.

4.2 Prohibited Use

You must not:

  • Reverse engineer, decompile, or otherwise attempt to extract source code or data from MetaCert systems.

  • Misrepresent your relationship with MetaCert.

  • Use MetaCert’s name, logo, or branding without written permission.

  • Use our services to build, train, or improve competing security or URL classification products.

  • Interfere with or disrupt MetaCert’s systems or operations.

5. Intellectual Property

All intellectual property rights in MetaCert’s products, services, and content belong to MetaCert or its licensors. You are granted a limited, non-exclusive, revocable licence to use our products as provided under these Terms. You may not reverse engineer, modify, or redistribute any MetaCert technology.

6. Product-Specific Terms

6.1 Link Verifier (iOS App)

Distributed via Apple’s App Store and governed by Apple’s platform terms.
Performs URL authentication using MetaCert’s Zero Trust model.

It does not access, store, or process message content, personal data, or contextual information from apps or devices. It only analyses the web link that is submitted for verification.

Any link classification reflects the state of MetaCert’s verified data set at the time of request. MetaCert’s data is updated continuously, but link classifications can change over time as websites are altered, compromised, or repurposed.

When you install Link Verifier, two components are added to your device:

  1. An Actions Extension integrated into the iOS share sheet, enabling verification of web links from within compatible apps.

  2. A Safari Extension that displays MetaCert’s shield on the side of the Safari browser, automatically checks classifications before a page loads, and updates the shield colour accordingly.

  3. Neither component accesses or processes message content, personal data, browsing history, or unrelated information.

6.2 Cryptonite (Browser Extension)

Operates within a browser sandbox environment.

Cryptonite automatically checks link classifications before a page loads and updates the shield colour in real time using the same system as Link Verifier.

Subscriptions and onboarding communications are managed through MailChimp and SendGrid.

When a customer uninstalls Cryptonite, an optional Typeform survey may be displayed for voluntary feedback.

6.3 Zero Trust API (Developers)

Provides programmatic access to MetaCert’s link authentication platform.

Access requires a valid API key, which must be stored securely.

API use is subject to rate limits and must comply with documentation and these Terms.

MetaCert may suspend or revoke API access for misuse.

Developers and partners are responsible for how they implement and present MetaCert’s classifications. MetaCert is not liable for any loss or damage resulting from misconfiguration, delayed updates, or failure to implement appropriate safeguards in third-party systems.

7. Accuracy and Limitations of Service

7.1 No Security Solution Is Perfect

MetaCert’s Zero Trust model is designed to prevent phishing by authenticating verified URLs. However, no security system can guarantee absolute protection. Attackers continuously evolve tactics, and classifications may change as new intelligence becomes available.

7.2 Decision Support, Not Absolute Safety

MetaCert’s products are designed to help you make better-informed decisions about which links to trust, but you acknowledge that you remain responsible for exercising caution and independent judgment online.

7.3 Service Availability

We strive to maintain reliable performance but may experience downtime, latency, or interruptions due to maintenance, updates, or external network conditions.

8. Disclaimer of Warranties

MetaCert products and services are provided “as is” and “as available.” We make no representations or warranties, express or implied, including but not limited to warranties of merchantability, fitness for a particular purpose, accuracy, completeness, or non-infringement.

MetaCert does not guarantee that a link classified as “verified” will remain trustworthy indefinitely or that an unclassified or unverified link will not later prove to be legitimate. 

You understand and agree that:

  • Some dangerous links may not yet be classified at the time you check them.

  • A verified website or link may later be compromised or altered beyond MetaCert’s control.

  • No classification system can eliminate all risk associated with interacting with online content.

You acknowledge that MetaCert’s services are advisory and informational, and that you remain solely responsible for your actions online.

9. Limitation of Liability

To the fullest extent permitted by law, MetaCert shall not be liable for any losses, damages, or claims arising from any classification, verification, or recommendation provided through its products or services. This includes cases where a URL is incorrectly verified as legitimate, incorrectly classified as dangerous, or otherwise misclassified. All classifications are intended as decision-support information only and not as guarantees of authenticity or safety.

To the fullest extent permitted by law, MetaCert and its officers, directors, employees, and affiliates shall not be liable for any indirect, incidental, consequential, special, or punitive damages, including:

  • Loss of data, revenue, or profits

  • Losses arising from clicking or interacting with dangerous links

  • Damage caused by reliance on classifications, errors, or omissions

MetaCert’s total aggregate liability under these Terms shall not exceed the amount paid by you to MetaCert in the preceding 12 months.

10. Indemnification

You agree to indemnify, defend, and hold harmless MetaCert, its officers, employees, and affiliates against any claims, damages, losses, or expenses (including legal fees) arising from:

  • Your use or misuse of MetaCert products or services

  • Your violation of these Terms or applicable law

  • Any third-party claim relating to your integration or reliance on MetaCert technology

This includes situations where a phishing occurs despite MetaCert’s classification or warnings.

11. Intellectual Property

All MetaCert technology, patents, designs, trademarks, and related intellectual property remain the exclusive property of MetaCert Inc. You may not copy, modify, or distribute MetaCert’s code, content, or data sets without written permission.

12. Governing Law and Jurisdiction

These Terms are governed by the laws of the State of Delaware, United States, without regard to conflict of law principles. Disputes shall be resolved exclusively in the state or federal courts located in Delaware.

13. Changes to These Terms

We may update these Terms periodically. The latest version will always be available at https://metacert.com/terms. Continued use of our products or services constitutes acceptance of the updated Terms.

14. Contact

For questions or legal notices regarding these Terms:

MetaCert Inc.

Email: hello@metacert.com
Website: https://developer.metacert.com