Legal

Terms of Service

Last updated: March 27, 2026

These Terms of Service ("Terms") govern your access to and use of the Stellar platform, website, and related services (collectively, the "Service") provided by Stellar ("Stellar," "we," "us," or "our"). By creating an account, accessing, or using the Service, you agree to be bound by these Terms.

If you are using the Service on behalf of an organization, you represent and warrant that you have the authority to bind that organization to these Terms, and "you" refers to both you individually and the organization.

Please read these Terms carefully before using the Service. If you do not agree to these Terms, do not use the Service.

1. Eligibility

You must be at least 18 years of age to use the Service. By using the Service, you represent and warrant that you meet this age requirement and have the legal capacity to enter into a binding agreement. If you are under 18, you may not create an account or use the Service.

2. Account Registration and Security

To access the Service, you must create an account. When creating an account, you agree to:

  • Provide accurate, current, and complete information during registration.
  • Maintain and promptly update your account information to keep it accurate, current, and complete.
  • Maintain the security of your password and accept all risk of unauthorized access to your account.
  • Notify us immediately if you discover or suspect any security breaches related to the Service or your account.

You are responsible for all activity that occurs under your account. We are not liable for any loss or damage arising from your failure to maintain the security of your account credentials.

3. Description of Service

Stellar is a no-code platform that enables businesses to create, deploy, and manage AI-powered voice agents. The Service includes, but is not limited to:

  • AI Voice Agent Builder: Tools to create and configure AI voice agents using customizable templates for lead qualification, event confirmation, and appointment booking.
  • Knowledge Base: Document upload and processing system that trains your AI agents with your business-specific information.
  • Voice Call Processing: Automated outbound and inbound voice calls powered by AI, including speech-to-text, text-to-speech, and natural language processing.
  • Call Management: Call recording, transcript generation, analytics, and reporting dashboards.
  • Integrations: Connections to third-party services including Google Calendar, CRM platforms, communication tools, and other business applications.
  • API Access: Programmatic access to trigger calls and manage agents via REST API.

4. Subscription Plans and Payment

4.1 Plans and Pricing

The Service is offered through subscription plans with varying feature levels and usage limits. Current plans, pricing, and included features are described on our Pricing page. We reserve the right to modify plans and pricing with 30 days' advance notice to existing subscribers.

4.2 Billing

  • Recurring Charges: Subscriptions are billed on a monthly or annual basis, depending on the billing cycle you select. Your subscription will automatically renew at the end of each billing period unless you cancel before the renewal date.
  • Usage-Based Charges: In addition to your subscription fee, you will be charged for per-minute voice usage at the rate specified in your plan. Usage is metered and billed at the end of each billing period.
  • Payment Processing: Payments are processed through our third-party payment processors (Stripe and Polar.sh). By providing payment information, you authorize us to charge the applicable fees to your payment method.
  • Failed Payments: If a payment fails, we may suspend access to the Service until payment is successfully processed. We will make reasonable attempts to notify you before suspension.
  • Taxes: All fees are exclusive of applicable taxes unless stated otherwise. You are responsible for any applicable sales tax, VAT, or other taxes.

4.3 Free Plan

We may offer a free plan with limited features and usage. Free plans are subject to usage limits and may be modified or discontinued at our discretion. Free plans do not include a service level commitment.

4.4 Refunds

Subscription fees are generally non-refundable. However, if you believe you have been charged in error, contact us within 14 days of the charge at billing@stellar.ai and we will review your request in good faith.

5. Acceptable Use

You agree to use the Service in compliance with all applicable laws and regulations. You agree not to:

  • Violate Telemarketing Laws: Use the Service to make calls in violation of the Telephone Consumer Protection Act (TCPA), Telemarketing Sales Rule (TSR), or any applicable federal, state, or international telemarketing regulations.
  • Make Unauthorized Calls: Initiate calls to individuals who have not provided proper consent or who are on the National Do Not Call Registry, unless an exemption applies.
  • Engage in Fraud or Deception: Use the Service to deceive, defraud, mislead, or manipulate call recipients, including misrepresenting the identity of the caller or the purpose of the call.
  • Harass or Threaten: Use the Service to harass, threaten, abuse, or intimidate any person.
  • Transmit Harmful Content: Upload, transmit, or distribute malicious software, viruses, or any code designed to disrupt, damage, or interfere with the Service or any other system.
  • Reverse Engineer: Reverse engineer, decompile, disassemble, or attempt to derive the source code of the Service or any component thereof.
  • Exceed Rate Limits: Attempt to circumvent rate limits, usage quotas, or other technical restrictions of the Service.
  • Resell Without Authorization: Resell, sublicense, or redistribute the Service without our prior written consent.
  • Impersonate: Impersonate any person or entity, or falsely state or misrepresent your affiliation with any person or entity.
  • Violate Privacy: Collect, store, or process personal information of call recipients in violation of applicable privacy laws.
  • Illegal Activities: Use the Service for any illegal or unauthorized purpose.

We reserve the right to investigate and take appropriate action against anyone who violates this section, including suspending or terminating their account and reporting them to law enforcement authorities.

6. Telephone Consumer Protection Act (TCPA) Compliance

You acknowledge and agree that:

  • The Service uses automated telephone dialing systems and artificial or prerecorded voice technology to make calls.
  • You are solely responsible for ensuring that you have obtained all necessary consents from call recipients before using the Service to contact them, as required by the TCPA and any applicable state or local laws.
  • You will maintain records of consent for all contacts and make them available to us upon request.
  • You will honor all opt-out requests promptly and maintain an internal do-not-call list.
  • You will not use the Service to contact numbers on the National Do Not Call Registry unless an applicable exemption applies.
  • You will comply with calling time restrictions (no calls before 8:00 AM or after 9:00 PM in the recipient's local time zone, unless otherwise permitted by applicable law).
  • You will indemnify and hold Stellar harmless from any claims, damages, or penalties arising from your failure to comply with the TCPA or other telecommunications regulations.

7. Intellectual Property

7.1 Our Intellectual Property

The Service, including its original content, features, functionality, design, and underlying technology, is owned by Stellar and protected by copyright, trademark, patent, trade secret, and other intellectual property laws. The Stellar name, logo, and all related names, logos, product and service names, designs, and slogans are trademarks of Stellar. You may not use such marks without our prior written permission.

7.2 Your Content

You retain all rights to the content you upload, create, or provide through the Service ("Your Content"), including knowledge base documents, contact lists, agent configurations, and call data. By uploading or providing Your Content, you grant us a limited, non-exclusive, worldwide license to use, process, store, and transmit Your Content solely for the purpose of providing and improving the Service.

You represent and warrant that you have all necessary rights to Your Content and that Your Content does not infringe or violate the rights of any third party.

7.3 Feedback

If you provide us with feedback, suggestions, or ideas regarding the Service ("Feedback"), you grant us a perpetual, irrevocable, worldwide, royalty-free license to use, modify, and incorporate the Feedback into the Service without any obligation to you.

8. Third-Party Services and Integrations

The Service integrates with and relies on third-party services (e.g., Google Calendar, CRM platforms, voice processing providers). Your use of these third-party services is subject to their respective terms of service and privacy policies. We are not responsible for the availability, accuracy, or reliability of third-party services.

We may modify, add, or remove integrations at any time. If a third-party service becomes unavailable or changes its terms, we will make reasonable efforts to notify you and, where possible, provide alternative solutions.

9. Service Availability and Support

9.1 Uptime

We strive to maintain high availability of the Service. However, we do not guarantee uninterrupted or error-free operation. The Service may be temporarily unavailable due to maintenance, updates, or circumstances beyond our control. We will make reasonable efforts to provide advance notice of scheduled maintenance.

9.2 Support

We provide customer support via email and in-app channels. Support response times and availability may vary based on your subscription plan. We do not guarantee specific response times unless specified in a separate service level agreement.

9.3 Modifications to the Service

We reserve the right to modify, update, or discontinue any part of the Service at any time, with or without notice. We will make reasonable efforts to notify you of material changes that may affect your use of the Service.

10. Termination

10.1 Termination by You

You may cancel your subscription and terminate your account at any time through your account settings. Upon cancellation:

  • Your subscription will remain active until the end of the current billing period.
  • You will not receive a refund for the remaining portion of the billing period.
  • Your data will be retained for 30 days following account deletion, after which it will be permanently deleted.
  • You may export your data before account deletion using the available export features or by contacting support.

10.2 Termination by Us

We may suspend or terminate your account immediately, without prior notice, if:

  • You breach any provision of these Terms.
  • You engage in activities that violate applicable laws or regulations.
  • Your use of the Service poses a security risk or may adversely affect other users.
  • Your account has been inactive for an extended period (12 months or more for free accounts).
  • We are required to do so by law or a governmental authority.

Upon termination by us for cause, you may not be entitled to a refund. We will make reasonable efforts to notify you before or promptly after termination.

10.3 Effect of Termination

Upon termination, your right to use the Service will immediately cease. Sections of these Terms that by their nature should survive termination will survive, including but not limited to intellectual property provisions, warranty disclaimers, limitation of liability, and indemnification.

11. Disclaimers

THE SERVICE IS PROVIDED ON AN "AS IS" AND "AS AVAILABLE" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED. To the fullest extent permitted by law, Stellar disclaims all warranties, including but not limited to implied warranties of merchantability, fitness for a particular purpose, non-infringement, and any warranties arising from course of dealing or usage of trade.

Without limiting the foregoing, we do not warrant that:

  • The Service will meet your specific requirements or expectations.
  • The Service will be uninterrupted, timely, secure, or error-free.
  • The results obtained from the use of the Service will be accurate or reliable.
  • AI-generated voice conversations will be appropriate for all contexts or audiences.
  • The quality of any information obtained through the Service will meet your expectations.

You acknowledge that AI voice agents may occasionally produce inaccurate, incomplete, or inappropriate responses. You are responsible for reviewing call outcomes and ensuring the quality of interactions meets your standards.

12. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, IN NO EVENT SHALL STELLAR, ITS OFFICERS, DIRECTORS, EMPLOYEES, AGENTS, OR AFFILIATES BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, including but not limited to loss of profits, data, business opportunities, goodwill, or other intangible losses, resulting from:

  • Your use of or inability to use the Service.
  • Any unauthorized access to or alteration of your data or transmissions.
  • Any conduct or content of any third party on the Service.
  • Any claims arising from calls made using the Service, including TCPA-related claims.
  • Any inaccurate, misleading, or inappropriate AI-generated content during calls.
  • Any other matter relating to the Service.

OUR TOTAL CUMULATIVE LIABILITY TO YOU FOR ALL CLAIMS ARISING FROM OR RELATING TO THESE TERMS OR THE SERVICE SHALL NOT EXCEED THE GREATER OF (A) THE AMOUNT YOU PAID TO US IN THE 12 MONTHS PRECEDING THE CLAIM, OR (B) ONE HUNDRED DOLLARS ($100).

Some jurisdictions do not allow the exclusion or limitation of certain damages. In such jurisdictions, our liability is limited to the maximum extent permitted by law.

13. Indemnification

You agree to indemnify, defend, and hold harmless Stellar, its officers, directors, employees, agents, and affiliates from and against any and all claims, damages, losses, liabilities, costs, and expenses (including reasonable attorneys' fees) arising out of or related to:

  • Your use of the Service.
  • Your violation of these Terms.
  • Your violation of any applicable law or regulation, including the TCPA and other telemarketing laws.
  • Your violation of any rights of a third party.
  • Your Content or the data you process through the Service.
  • Any claims by call recipients arising from calls made using the Service.

14. Dispute Resolution

14.1 Informal Resolution

Before filing any formal legal proceeding, you agree to first attempt to resolve any dispute informally by contacting us at legal@stellar.ai. We will attempt to resolve the dispute within 30 days. If the dispute is not resolved within 30 days, either party may proceed with formal dispute resolution.

14.2 Arbitration

Any dispute, controversy, or claim arising out of or relating to these Terms, or the breach, termination, or validity thereof, that cannot be resolved informally shall be settled by binding arbitration administered by the American Arbitration Association ("AAA") under its Commercial Arbitration Rules. The arbitration shall be conducted in English. The arbitrator's decision shall be final and binding. Judgment on the award may be entered in any court of competent jurisdiction.

14.3 Class Action Waiver

YOU AGREE THAT ANY DISPUTE RESOLUTION PROCEEDINGS WILL BE CONDUCTED ONLY ON AN INDIVIDUAL BASIS AND NOT IN A CLASS, CONSOLIDATED, OR REPRESENTATIVE ACTION. If for any reason a claim proceeds in court rather than in arbitration, you waive any right to a jury trial.

14.4 Exceptions

Notwithstanding the above, either party may seek injunctive or equitable relief in any court of competent jurisdiction for claims related to intellectual property infringement or unauthorized access to the Service.

15. General Provisions

15.1 Governing Law

These Terms shall be governed by and construed in accordance with the laws of the State of Delaware, United States, without regard to its conflict of law provisions.

15.2 Entire Agreement

These Terms, together with our Privacy Policy and any other agreements or policies referenced herein, constitute the entire agreement between you and Stellar regarding the Service and supersede all prior agreements, representations, and understandings.

15.3 Severability

If any provision of these Terms is held to be invalid, illegal, or unenforceable, the remaining provisions shall continue in full force and effect. The invalid provision shall be modified to the minimum extent necessary to make it valid and enforceable.

15.4 Waiver

Our failure to enforce any right or provision of these Terms shall not constitute a waiver of such right or provision. Any waiver must be in writing and signed by Stellar.

15.5 Assignment

You may not assign or transfer your rights or obligations under these Terms without our prior written consent. We may assign our rights and obligations under these Terms without restriction.

15.6 Force Majeure

We shall not be liable for any failure or delay in performing our obligations under these Terms due to events beyond our reasonable control, including but not limited to natural disasters, acts of government, internet service disruptions, power outages, pandemics, wars, or acts of terrorism.

15.7 Notices

We may send you notices via email to the address associated with your account, through in-app notifications, or by posting on the Service. Notices to us should be sent to legal@stellar.ai.

16. Changes to These Terms

We reserve the right to modify these Terms at any time. We will notify you of material changes by posting the updated Terms on this page, updating the "Last updated" date, and, for significant changes, providing additional notice via email or a prominent notice within the Service. Your continued use of the Service after the effective date of the revised Terms constitutes your acceptance of the changes.

If you do not agree to the updated Terms, you must stop using the Service and cancel your subscription before the changes take effect.

17. Contact Us

If you have questions or concerns about these Terms, please contact us:

See also: Privacy Policy