Terms of Service

Last updated 2026-04-06

These Tabstack Terms of Service (Terms) apply to and govern your access to and use of the Tabstack website, application programming interface (API), technology, software, and services as further described in these Terms (Services) via any platform or device.

Please read these Terms carefully before you sign up for or use the Services. By accessing, signing up for, browsing, or using the Services, you agree to be bound by these Terms. If you are agreeing to these Terms on behalf of a company or other legal entity, you represent that you have the authority to bind such entity and its affiliates to these Terms, in which case the terms “you” and/or “your(s)” refers to such entity and its affiliates. If you do not have such authority to agree to these Terms on behalf of a company or other legal entity, or if you do not agree with these Terms, you must not agree to these Terms and must not use the Services.

The Services are owned, licensed, and operated by Mozilla Corporation (referred to herein as "we," "us," "our," or "Mozilla"). If you use the Tabstack API as an interface to, or in combination with, any other Mozilla products or services, the terms for those Mozilla products and services also apply.

1. Services

A. Overview

The Services enables you to connect your websites and applications to the internet and third party vendors in order to browse, scrape and structure data for use in any of your websites and applications (“Your App(s)”) and to send automated requests for the Services to take actions across the internet on your behalf. Some of our Services are available for a fee as described in detail on our Tabstack Plan page and subject to all rate and usage limits per applicable tier.

The Services also include access to third-party artificial intelligence (AI) based foundation models or large language models (AI Models) that enable you to submit prompts, documents, queries, content, or other information (Inputs) to, and receive responses based on your Inputs (Outputs) from third party vendors and those AI Models for use in Your Apps. Please note that neither your Inputs nor your personal information is used to train the model.

These Services include experimental features that are not intended to be complete, comprehensive, or ready for a general release and may include bugs, errors, or other issues. You understand and agree that we: (i) do not promise, and are not obligated to provide, you any support (technical or otherwise) in connection using the Services; and (ii) will continue to develop and change the Services over time. You understand and agree that the Services may develop into general release products that are subject to different terms and conditions and fees. Your access to the experimental versions of the Services does not guarantee you access to any general release of any of the Services.

B. Using the Services

  1. General: We grant you a non-exclusive right to access and use the Services, subject to your compliance with these Terms. In order to access and use the Services, you (1) must be at least eighteen (18) years of age to use the Services; (2) must give Mozilla all rights necessary to operate the Services, including processing data, the content of your Inputs, and to generate Outputs through the Services; (3) must not use the Services to violate any laws in the jurisdiction where you are based; and (4) are prohibited from using the Services if you are barred under any Office of Foreign Assets Control Specially Designated Nationals List or face any other similar prohibition in any other applicable jurisdiction.

    You will also comply with the Tabstack API Documentation, Mozilla’s Acceptable Use Policy, and any other policies referenced in these Terms.

    You will use the Services only as allowed for under these Terms. If you appear to be using the Services for something other than their intended purpose, your use may be terminated. You may not use the Services, or any of the underlying AI Models, to support the creation of your own AI Models.

  2. Using our Web-agents: If you choose to use parts of the Services that take action on your behalf across the web, you understand and agree that: (1) you are granting us the authority to take the requested actions and share the information you provide with websites for the purposes of providing those services; (2) that you have all of the necessary rights, licenses, and consents to request us to take action on by half of your end users (if applicable); and (3) it is your responsibility to ensure that you (or your end users) are comfortable sharing the information you provide us, including if you (or your end users) choose to share personal information.

  3. Your End Users: You must require your end users to comply with applicable laws and these Terms and you must not facilitate their violation of any applicable laws or these Terms.

  4. End User Privacy: You agree to: (1) comply with applicable privacy and data laws and regulations, including those relating to personal data, and (2) will provide a privacy policy for Your App that transparently and accurately describes to your end users what information you collect, how you collect that information, and how you use and share that information with Mozilla and any other third parties.

  5. Open Source Software: We may offer some software as open source, in which case, such software will be subject to a separate license which you will need to comply with.

  6. Mozilla Products and Services: You understand and agree that we may develop products or services that may compete with Your Apps or any other products or services.

C. Accounts & Access

  1. Account: You are only allowed to access the API and related services as described in the API Documentation and these Terms. You will be required to create an account to use the Services as follows:
    1. Through our system: During registration, you will need to provide an email address and set a password. You are responsible for keeping your password confidential and for the activity that happens through your account. We are not responsible for any losses arising out of unauthorized use of your account.
    2. Using your Google Account: You can sign up for use of the Services, using your Google Account. You can create a Google Account on Google’s signup page. More information about the information that we receive from Google, and how we use that information, is included in our Privacy Notice. Google Accounts has its own Privacy Notice.
  2. API Key Security
    1. We will provide you one or more unique credentials (each, an API Key(s)). You are solely responsible for (i) keeping your API keys secure and confidential using industry-standard technical and physical safeguards, and (ii) for every request, change or action taken with your API Key
    2. You are prohibited from:
      1. masking your or Your App’s identity when using the API.
      2. embedding, hard-coding or otherwise exposing any API Key in client-side code, public repositories or documentation; and
      3. sharing, selling, sublicensing, transferring, or allowing any third party to use an API Key.
  3. Rate Limits: Mozilla sets limits on the number of API requests that you can make and/or the number of end users you can provide services and we will set and enforce these limits in our sole discretion. You are prohibited from circumventing, or attempting to circumvent these limits without express written approval from Mozilla.
  4. Monitoring: You agree that Mozilla may, but has no obligation to, monitor your use of the Services to ensure compliance with these Terms and ensure quality, including by accessing your Tabstack account. You agree not to interfere with any monitoring we may perform.
  5. Security: To the extent required by applicable law, you agree to use commercially reasonable efforts to protect any user information, including personal data, collected by your Apps from unauthorized access or use.

D. Free Trial, Fees, & Payments

  1. Free Trial: Subject to your compliance with these Terms, you can use the Services for free up to a set credit usage limit (Trial Credits) as described on the Tabstack Plan page. Subject to your compliance with these Terms, the Trial Credits do not expire for the life of your account. The Trial Credits do not have dollar value outside of the Service and are non-transferable or assignable. Once you have expended the Trial Credits, you have the option of selecting a Paid Plan as set forth in Section D2 below.
  2. Paid Plans: We may make subscription plans available as set forth on our Tabstack Plan page subject to these Terms (Subscriptions). For any paid subscription plan (Paid Plan), you will need to provide a credit card or other payment method (Payment Method). By selecting a paid plan, you authorize us to charge your Payment Method. We will charge you for the term stated on the subscription page when you first Subscribe (Initial Term). At the end of your Initial Term, your Subscription will automatically renew, and will continue to renew, and your Payment Method will be charged for additional terms equal to the length of the Initial Term (Renewal Term) until you cancel. Included credits expire at the end of your Initial Term or any Renewal Term and are not transferable. You are responsible for any credit overages in excess of the included credits and you will be billed at the end of the applicable term.
  3. Exchange Fees and Pricing: When selecting one of the paid plans, your transaction with us may be subject to foreign exchange fees or differences in prices, including because of exchange rates. We do not support all payment methods, currencies or locations for payment and may vary such offerings from time to time.
  4. Cancellations & Refunds:
    1. Cancellations. You may cancel your Tabstack account at any time. You can do this by clicking the “Cancel Subscription” link in any email that we send you about the Services or by going to the Billing section of your Tabstack account and clicking “Cancel.” To avoid renewal and charges for the next Renewal Term, where applicable, you must cancel your subscription at least 24 hours before the last day of the Initial Term or any Renewal Term. When you cancel your Subscription, you will not receive a refund, but your access to the Services will continue through the end of your Initial Term or any Renewal Term for which fees were paid and you will continue to be responsible for any accrued overages as described in Section D2 above.
    2. Refund Policy. We will provide refunds to residents of a country where you have the legal right to change your mind and you want to cancel your Subscription. In order to exercise this right, you must provide a clear written record of your request to cancel under this Section D4 to support@tabstack.ai. We will reimburse your Payment Method on file in your account with undue delay. Your cancellation right will not reset if you cancel and resubscribe.

2. Privacy

We use the information we receive through the Services as described in our Privacy Notice.

3. Feedback

Any ideas, suggestions, or feedback that you provide about any of the Services may be used by Mozilla for free, without any additional obligations.

4. Content & Ownership

A. Content You Share

By using the Services and/or signing up for your account, you represent that you will only share content, material, or information (including Inputs) (collectively “Content”) that you own and/or have the legal right to share and sublicense to others, including without limitation, Content and data shared through the Services to generate Outputs. When you submit Content through the Services or connect Your Apps to the Service, you continue to own the rights to that Content and Your Apps.

You grant Mozilla a worldwide, royalty-free, perpetual, irrevocable, non-exclusive, transferable license to use, copy, modify, adapt, sub-license, prepare derivative works from, distribute, perform, and display the Content and/or Your Apps for the purpose of operating the Services. Content, including Inputs, shared through or on the Services is subject to our Acceptable Use Policy.

We may remove Content and/or suspend or terminate your access to the Services if it violates those policies, and in the case of certain violations, may suspend or deactivate your access to the Services and/or account. When we do this, we will send you a notice indicating the policy violation you committed and the action that we have taken, and will provide you the opportunity to appeal.

B. Third Party Content

You may be able to access third party content made available through or provided by the Services. Mozilla is not responsible for such third party content. The person or entity that makes the content available is solely responsible for such content. Mozilla has the right, but is not obligated, to review third party content accessible through the Services and may remove the content if we determine it is illegal or violates these Terms. Such third party content may also be subject to intellectual property or other proprietary rights and you are solely responsible for ensuring that you’ve acquired all necessary rights, licenses and consents to use such content in Your App.

We may also restrict access to the content accessible through or by the Services where required by applicable law.

C. Use of AI Outputs

For Services that enable you to create AI Outputs, those Outputs may contain inaccuracies. In such instances, you are responsible for: (i) your own use of the Outputs and determining whether Outputs accurately reflect the Inputs and/or meet your particular needs, including ensuring that your use of the Outputs complies with applicable laws; and (ii) for any consequences of your misuse of the Outputs. Your right to use the Outputs may not apply to information or material that is added to or that results from an AI-based result. The Outputs do not reflect Mozilla’s views and Mozilla makes no representations about the quality or usefulness of the Outputs, or their efficacy in obtaining a particular result and may be the same or similar to outputs generated for our other users or users of those AI Models generally.

5. Prohibitions & Limitations

A. Prohibitions

In addition to not undertaking actions prohibited in the Mozilla Acceptable Use Policy, you will not, and will not permit others acting on your behalf or your end users to, do any of the following:

  • Sublicense or resell the Services to use by a third party;
  • fail to disclose the use of AI in Your Apps to your end users (unless it is obvious from the context);
  • engage in misleading marketing or advertising, including, Ad fraud or click fraud, fake engagement (likes, comments, shares, etc.), and Search Engine Optimization (SEO) manipulation (i.e: fake clicks in search engines results);
  • Use the Services for something other than its intended purpose, including using the underlying AI Models to support the creation of your own AI Model;
  • Use the Services solely for storage;
  • collect nonpublic information (i.e. data behind login);
  • Caching longer than is permitted by the cache header;
  • Use the APIs to process any data that is subject to the U.S. Department of State’s International Traffic in Arms Regulations; and/or
  • create fake accounts or content.

B. Product, Service, & Purpose Limitations

You will not, and will not permit others acting on your behalf or your end users to use the Services for any of the following products, services, or purposes:

  • Use of automatic ticket purchasing (ticket-bots);
  • Raffles, lottery, or gambling;
  • Gaming or trading of in games items/currency;
  • Use of streaming related domains (videos, music or images streaming);
  • Trading crypto/virtual currency or NFT;
  • Posting on classified, used, and resell sites;
  • Completion of surveys in return for a benefit or anything of value;
  • Creating or expanding facial recognition databases;
  • Real-time remote biometric identification in public spaces for law enforcement purposes;
  • Evaluate or classify individuals based on their social behavior or personal traits (including social scoring or predictive profiling) leading to detrimental or unfavorable treatment;
  • Assess or predict the risk of an individual committing a criminal offense based solely on their personal traits or on profiling;
  • Categorize individuals based on their biometric data to deduce or infer sensitive attributes such as their race, political opinions, religious beliefs, or sexual orientation;
  • Provide tailored legal, medical/health, or financial advice without review by a qualified professional and disclosure of the use of AI and its potential limitations;
  • Make high-stakes automated decisions affecting an individual’s safety, rights or well-being (e.g., law enforcement, migration, management of critical infrastructure, safety components of products, essential services, credit, employment, housing, education, social scoring, or insurance);
  • Engage in political campaigning or lobbying, including generating campaign materials personalized to or targeted at specific demographics;
  • Deter people from participation in democratic processes, including misrepresenting voting processes or qualifications and discouraging voting; and/or
  • Infer an individual’s emotions in the workplace and educational settings, except when necessary for medical or safety reasons.

C. HIPPA Obligations

Mozilla does not intend the Services to create any obligations under the Health Insurance Portability and Accountability Act (HIPAA). You shall not use the Services to transmit, for any purpose, protected health information to Mozilla without our prior express written consent.

6. Notice of Claimed Infringement

To report claims of copyright or trademark infringement, please see here.

7. Mozilla Intellectual Property

Mozilla does not grant you any intellectual property rights in the Services or other Mozilla products and services unless these Terms specifically say otherwise. For example, these Terms do not provide the right to use any of Mozilla’s copyrights, trade names, trademarks, service marks, logos, domain names, or other distinctive brand features.

8. Term; Termination

These Terms will continue to apply until ended by either you or Mozilla. You can choose to end them at any time for any reason by discontinuing your use of the Services and, if applicable, deleting your account. If you choose to terminate your account, we may terminate your account data and content.

We may suspend or terminate your access to the Service at any time for any reason, including, but not limited to if we reasonably believe: (i) you have violated these Terms, the Tabstack API Documentation, the Acceptable Use Policy or another relevant policy; (ii) your use of the product creates risk or legal exposure for us; or (iii) our provision of the Service to you is no longer commercially viable.

In all such cases, these Terms shall terminate, except that the following sections shall continue to apply: Content & Ownership, Prohibitions & Limitations, Mozilla’s Intellectual Property, Indemnification, Disclaimer & Limitation of Liability, Choice of Law & Jurisdiction.

9. Communications

By using the Services, we may reach out to you regarding your use of the Services, your Content, or other feedback you submit to us.

10. Indemnification

You agree to defend, indemnify and hold harmless Mozilla, and its respective parent and affiliate companies, contractors, contributors, licensors, partners, directors, officers, employees and agents (Indemnified Parties) from and against any and all third party claims and expenses, including attorneys’ fees, arising out of or related to your use of the Services. This includes, but is not limited to, claims and expenses arising from any of the Content shared by you.

11. Disclaimer & Limitation of Liability

Mozilla offers the Services “as is.” Neither Mozilla nor its Indemnified Parties represent or warrant that the Services or the platform are suitable for any particular purpose, or that they are free of defects or problems. To the extent permitted by law, Mozilla and the Indemnified Parties Disclaim all warranties, express or implied. Any tool or service that you select for a particular purpose is selected at your own risk, including the risk that your content could be deleted or corrupted, or that the Services might fail to meet your specific needs or to perform at the level you desire. Some jurisdictions do not allow the exclusion or limitation of implied warranties, so this disclaimer may not apply to you.

Except as required by law, Mozilla will not be liable for any indirect, special, incidental, consequential, or exemplary damages arising out of or in any way relating to these Terms or from your use of or loss of access to the Services. Risks may include loss of goodwill, work stoppage, lost profits, loss of data, computer failure or malfunction, and other damages, for which Mozilla will not be responsible (even if advised of the possibility of such damages), under any legal theory (tort, contract or otherwise). The collective liability of Mozilla and the Indemnified Parties under this agreement will not exceed $500 (five hundred dollars).

Some jurisdictions do not allow the exclusion or limitation of incidental, consequential, or special damages, so this exclusion and limitation may not apply to you.

12. Modification of These Terms

Mozilla may update these Terms from time to time, and will post the updated Terms online. Where changes are substantive, we will notify you via email, in public announcements, or through the Service itself. To better enable you to track changes, we will post an effective date at the top of this page.

13. Choice of Law & Jurisdiction

These Terms will be interpreted and enforced in accordance with California state law, excluding its conflict of law provisions. If any portion of these Terms is held to be invalid or unenforceable, the remaining portions will remain in full force and effect. In the event of a conflict between a translated version of these terms and the English language version, the English language version shall control.

14. Contact Us

To provide feedback on any of the Services or these Terms, contact us at support@tabstack.ai.

Our copyright or trademark claims reporting page explains how to report infringement on the Service.

For other concerns, you may email us at legal-notices@mozilla.com or write to us at the following address:

Mozilla Corporation
Attn: Mozilla – Legal Notices
149 New Montgomery Street
4th Floor
San Francisco, CA 94105