Terms of service

Last updated: 21 October 2026

These terms are an agreement between StackTether ("StackTether", "we", "us") and the business that signs up for StackTether ("Customer", "you"). The person accepting these terms confirms they have authority to bind that business. StackTether is offered only to businesses, not to consumers.

1. The service

StackTether connects the business systems you choose (for example your PSA) to the AI apps you choose (for example Claude or ChatGPT) through one secure connection, and gives you a portal to manage your team, vendor connections, AI apps and audit log (the "Service").

• Read-only today. The Service's tools only read data from your vendor systems. If we add tools that change data, they will be off by default, and an admin must switch each one on for each user.
• We may change the Service, for example by adding vendors, tools or AI apps, or by removing a feature a vendor or AI app no longer supports. We will not materially reduce the core Service during a paid period without notice.
• Beta features, including the Founding MSP beta, are provided as they are, may change or end, and are not covered by any support or availability commitment.

2. Accounts

• Accounts are invite-only. Your admins decide who joins, what vendor connections each person may use, and which AI apps your business allows.
• Every user must use two-factor authentication. You are responsible for keeping sign-in details and authenticator devices secure and for everything done under your users' accounts.
• Tell us promptly through our contact form (topic "Security report") if you suspect unauthorized access.
• You are responsible for your users following these terms and the acceptable use policy.

3. Your data, your clients and your vendors

• You own your data. "Customer Data" means the vendor credentials you save, the data StackTether reads from your vendor systems for you, and the data your users enter. You give us permission to process Customer Data only to provide, secure and support the Service, as set out in our data processing addendum (DPA), which forms part of these terms.
• You are responsible for your clients' data. Your vendor systems may hold personal data about your own clients and their staff, and in some cases sensitive data such as health information. You are responsible for having the rights, notices and consents needed to connect those systems and to send their data to the AI apps you choose, and for meeting the laws and contracts that apply to that data.
• You are responsible for your vendor and AI app accounts. You must follow the terms of each vendor whose system you connect and of each AI app you use, including any limits on API use. We recommend a dedicated, read-only API user for each vendor connection.
• AI apps are your choice. When an AI app you allowed calls StackTether, our answers go to that AI app. Its vendor is not our subcontractor; its handling of data is governed by your agreement with it.
• Health information. StackTether does not currently offer a HIPAA business associate agreement. Do not use the Service in a way that requires one.
• Service data. We may use metadata about how the Service is used (for example counts of tool calls and errors, never record contents) to run, secure and improve the Service. We do not use Customer Data to train AI models.

4. AI output

AI apps can misread, summarise wrongly or invent information, even when the underlying data is correct. Vendor data can also be wrong, out of date or contain text written by anyone, including text that looks like instructions. You are responsible for checking AI output before relying on it, and for decisions you make with it. StackTether does not control the AI apps and is not responsible for what they say or do.

5. Acceptable use

You and your users must follow our acceptable use policy. We may suspend access, for a user or for your business, if needed to stop a security threat, a breach of these terms or a legal problem. We will tell you why and restore access once the problem is fixed, where we reasonably can.

6. Fees and billing

• Fees are set out on our pricing page or in an order you accept. They are in US dollars and exclude taxes, which you pay where they apply.
• Fees are charged per billable tech: an active member of your business with access to at least one vendor connection. Changes in the number of billable techs are prorated as described on the pricing page.
• Plans renew automatically for the same period (monthly or yearly) until cancelled. You can cancel at any time; cancellation takes effect at the end of the current period. Fees already paid are not refunded, except where the law requires or we say otherwise in writing.
• We may change prices for future periods with at least 30 days' notice. Founding MSP price commitments apply as stated in your beta offer.
• If a payment fails, we will tell you and try again. If it is still unpaid 14 days after that notice, we may suspend the Service until it is paid.

7. Availability and support

We work to keep the Service available and secure, but we do not currently offer an uptime commitment or service level agreement. The Service depends on third parties we do not control, including your vendors' APIs, the AI apps and our hosting providers. Support is provided through our contact form on the timeline for your plan.

8. Security

We protect Customer Data with the measures described in our DPA. You are responsible for the security of your own systems, devices, vendor accounts and AI app accounts, and for setting up the access controls StackTether gives you (vendor access per person, AI apps per business and per person).

9. Confidentiality

Each of us will keep the other's non-public information confidential, use it only for this agreement, and protect it with reasonable care. This does not apply to information that is public, already known, independently developed, or that the law requires to be disclosed (with notice where allowed).

10. Intellectual property and feedback

We own the Service, including its software, design and documentation. You own Customer Data. If you send us suggestions or feedback, we may use them without obligation to you.

11. Term, suspension and termination

• This agreement lasts while you use the Service. Either of us may end it by cancelling as described in section 6. Either of us may end it at once if the other seriously breaches it and does not fix the breach within 30 days of notice.
• When your account is closed, access ends, and your Customer Data (users, vendor connections, credentials and settings) is deleted 30 days later, unless you reopen the account in that time. Logs are kept for their retention period (1 year) and then deleted, as set out in our privacy policy.
• Sections that by their nature should survive (fees owed, confidentiality, disclaimers, liability, governing law) survive termination.

12. Warranties and disclaimers

We will provide the Service with reasonable skill and care, substantially as described in our documentation. Apart from that, and to the fullest extent the law allows, the Service is provided "as is" and "as available", and we disclaim all other warranties, including merchantability, fitness for a particular purpose and non-infringement. We do not warrant that the Service, vendor data or AI output will be error-free or uninterrupted.

13. Limitation of liability

• Neither of us is liable for indirect, incidental, special, consequential or punitive damages, or for lost profits, revenue or data, even if told they were possible.
• Each party's total liability arising out of this agreement is limited to the greater of (a) the fees you paid us in the 12 months before the event that gave rise to the claim and (b) US$1,000.
• These limits do not apply to your obligation to pay fees, to either party's indemnity obligations, or to liability that cannot be limited by law.

14. Indemnity

You will defend and hold us harmless against third-party claims arising from Customer Data, your use of vendor systems or AI apps in breach of their terms, or your breach of the acceptable use policy. We will defend and hold you harmless against third-party claims that the Service, as we provide it, infringes their intellectual property rights.

15. General

• Governing law and courts: these terms are governed by the laws of the State of Florida, USA, without regard to its conflict-of-laws rules. Any dispute arising out of these terms is heard exclusively in the state or federal courts located in or serving Lake County, Florida, and each party agrees to their jurisdiction.
• Notices: we send notices to your admins' email addresses or in the portal; you send notices to us through our contact form.
• Changes to these terms: we will post changes here and tell your admins at least 30 days before material changes take effect. Continuing to use the Service after that means you accept them.
• Other terms: neither of us may assign this agreement without the other's consent, except as part of a merger or sale of the business. Neither of us is liable for delays caused by events beyond reasonable control. If a part of these terms is unenforceable, the rest still applies. These terms, the DPA, the acceptable use policy and any order you accept are the whole agreement between us about the Service.