Terms of Service
Effective August 18, 2026 · Last updated August 18, 2026
These Terms of Service (“Terms”) are an agreement between you and 4cxt, Inc., a Delaware corporation and the company behind TandemDoc (“TandemDoc,” “we,” “us”), governing your use of the TandemDoc service, website, APIs, and MCP server (together, “the Service”). By clicking “I agree,” creating an account, or using the Service, you agree to these Terms. If you use TandemDoc on behalf of an organization, you represent that you are authorized to accept these Terms for it, and “you” includes that organization.
1. Who may use TandemDoc
You must be at least 18 years old and legally able to enter into these Terms. The Service is not intended for children or minors. You may not use the Service if you are barred from doing so under United States law or the sanctions rules described in Section 19.
2. The Service
TandemDoc keeps one document in your own accounts — a Google Doc, or a Microsoft Word file in OneDrive — in sync with one Markdown file in a Git repository you control, harvests the document’s comments into your repository, and offers an optional agentic review loop that you or your own AI assistant can drive, including through our MCP server. Onboarding surfaces (such as a sandbox pair or a document import) are part of the Service.
The Service includes safeguards designed to stop and report a conversion it cannot perform reliably, rather than silently degrading your content. Conversion between different document systems is inherently subject to technical variance, and these design features are not a warranty of error-free conversion, data integrity, or complete fidelity (see Section 15). You remain responsible for reviewing synchronized output.
3. Your account
Keep your credentials secure; you are responsible for activity under your account. Give us accurate account information. If you sign in or connect a work account, your organization’s own policies and agreements may govern content in that account — nothing in these Terms overrides your obligations to your employer or the rights your organization holds in its own documents and repositories.
4. Connected accounts and third-party services
The Service works by connecting accounts you already own: Google (sign-in and per-file Drive access), Microsoft (sign-in and OneDrive file access), GitHub (a repository-scoped App installation), and Stripe (billing). Connecting an account is always your action, and doing so authorizes TandemDoc to exchange data with that provider as needed to deliver the feature you configured. We use connected-account data only for the features you configure, support you request, security, and legal compliance, as described in our Privacy Policy, which sets out each connection’s scope.
Each provider’s own terms govern your relationship with that provider, and you agree not to use TandemDoc in a way that violates them. Third-party services are outside our control: we are not responsible for their availability, changes, or acts, and an outage or API change on their side can interrupt the Service.
5. Your content
Your documents, comments, and code are yours. We claim no ownership of any content you sync through the Service (“Your Content”).
To perform the actions you direct, you grant 4cxt a limited, non-exclusive, worldwide, royalty-free license, for as long as you use the Service, to access, reproduce, temporarily store, parse, format, modify, transmit, and display Your Content — including creating the format-converted versions the Service produces — solely as necessary to: (a) read the linked document, its comments, and the linked Markdown file; (b) convert content between document and Markdown formats; (c) write to the linked files; (d) create commits or branches and open pull requests; (e) include Your Content in a review notification you configure, to the extent that notification contains it; (f) transmit Your Content to an AI assistant you affirmatively connect and instruct; (g) provide support for which you expressly request content access; and (h) investigate a specific security or abuse incident.
The license ends for a pair when you unlink it, and otherwise when your account closes, except for limited records retained as the Privacy Policy describes. Content already written to your own repositories or documents persists there under your own settings; we cannot retract it.
You are responsible for Your Content: you represent that you have the rights needed to sync it, and that Your Content and your use of the Service do not violate law or others’ rights. By adding a review-roster recipient, you represent that you have that person’s consent or an existing relationship that makes the notification reasonably expected, and you instruct us to send it on your behalf. You may not add purchased, scraped, or unrelated addresses.
6. AI assistants and the review loop
The agentic loop is operated by you. When you connect your own AI assistant through our MCP server, that assistant acts under your instruction and your agreement with its provider; TandemDoc transmits your data to it because you directed that, and we are not responsible for what your assistant or its provider does with data you route to them, or for the accuracy or suitability of anything it produces. TandemDoc itself does not use Your Content to train AI models.
By default, agent-proposed changes are presented as a pull request for you to review rather than written to your default branch, and you are responsible for reviewing and merging or rejecting them. You should also configure repository branch protections appropriate to your needs.
7. Feedback
If you send us ideas or suggestions, we may use them without restriction or obligation to you. Your Content is not “feedback.”
8. TandemDoc’s property
The Service — its software, design, documentation, and trademarks — belongs to TandemDoc or its licensors and is protected by law. These Terms grant you only the right to use the Service; they transfer no ownership. Open-source components we publish or use remain under their own licenses.
9. Acceptable use
Do not misuse the Service. In particular, do not: use it for content or repositories you lack rights to; probe, disrupt, or overload it; try to bypass plan limits, entitlements, or access controls; harvest others’ data; use it to send spam or to add roster recipients contrary to Section 5; resell it without our written agreement; or use it to violate law or the terms of Google, Microsoft, GitHub, or Stripe. We may suspend or terminate accounts that do (Section 18).
10. Plans, billing, and cancellation
Paid plans are billed in advance, monthly, in US dollars, through Stripe, and renew automatically each period until you cancel. Reviewers are always free.
Before charging you, we present the renewal period, the amount and frequency of charges, how to cancel, and our contact information; we obtain your separate affirmative consent to those renewal terms; and we send you a retainable acknowledgment containing those terms and a direct cancellation link. We retain evidence of that consent as required by law.
You can cancel anytime online through the Stripe Customer Portal from your dashboard — the same medium you subscribed in — or, if you cannot reach your account, by emailing hello@tandemdoc.com. Cancellation takes effect at the end of the current billing period, and you keep access until then. We do not refund partial periods, except that we refund duplicate or erroneous charges, we refund prepaid fees if a material change to these Terms leads you to cancel (Section 20), and we honor refunds the law requires.
Promotional offers (such as a design-partner free year) are subject to their stated limits and expiry, which we present before you accept them. We may change prices for future renewal periods; we will send any legally required renewal, trial, promotional-price, or fee-change notice, and for a fee change affecting a California consumer that notice will arrive no fewer than 7 and no more than 30 days before the change takes effect. If you do not agree to a price change, cancel before it applies.
11. Beta and experimental features
Features identified as beta, preview, sandbox, or experimental are provided as-is, may change or be withdrawn at any time, may carry additional limits, and may involve data (such as sandbox pairs) that is reset or deleted. Use them at your option.
12. Copyright complaints (DMCA)
We have adopted and reasonably implement a policy of terminating repeat infringers in appropriate circumstances. Send notices meeting 17 U.S.C. §512(c)(3) to our registered designated agent: Copyright Agent, 4cxt, Inc., 1622 Linwood Street, San Diego, CA 92103, USA, or copyright@tandemdoc.com. A notice must identify the material and where within the Service you want it disabled. We will remove or disable material as required, notify the affected user, and accept counter-notices under §512(g). We may be unable to remove copies stored solely in third-party accounts you control, such as your own Drive, OneDrive, or repository.
13. Confidentiality and restricted data
Each party will protect the other’s non-public information with at least reasonable care and use it only to provide or receive the Service. This does not apply to information that is public through no breach, already lawfully known, independently developed, or lawfully received without restriction, and either party may disclose where legally required after giving notice if lawful.
Do not use the Service to process protected health information subject to HIPAA, payment card data, government identification numbers, export-controlled technical data, or other data requiring service-specific regulatory or contractual safeguards, unless we agree in writing.
14. Data processing
To the extent we process personal data contained in Your Content on your behalf, we will: process it only on your documented instructions, which include these Terms and your configuration of the Service; ensure that people authorized to process it are bound by confidentiality; maintain appropriate technical and organizational security measures; assist you as reasonably necessary with data-subject requests, security incidents, and legally required assessments; notify you without undue delay after confirming a breach affecting that data; delete or return it on termination as the Privacy Policy describes; make available information reasonably necessary to demonstrate compliance with this section; and impose materially equivalent obligations on any subprocessor we engage.
You authorize the service providers identified in the Privacy Policy as subprocessors. Where a transfer of personal data from the European Economic Area, the United Kingdom, or Switzerland requires a transfer mechanism, the then-current European Commission Standard Contractual Clauses (Module Two, controller to processor), together with the UK International Data Transfer Addendum and Swiss adaptations where applicable, are incorporated into these Terms by reference and govern that transfer.
15. Disclaimer of warranties
TO THE FULLEST EXTENT PERMITTED BY LAW, THE SERVICE IS PROVIDED “AS IS” AND “AS AVAILABLE,” WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT. WE DO NOT WARRANT THAT THE SERVICE WILL BE UNINTERRUPTED, ERROR-FREE, OR LOSSLESS FOR EVERY DOCUMENT CONSTRUCT, OR THAT THIRD-PARTY SERVICES IT DEPENDS ON WILL REMAIN AVAILABLE. SOME JURISDICTIONS DO NOT ALLOW THESE EXCLUSIONS; IN THAT CASE THEY APPLY TO THE EXTENT PERMITTED.
16. Limitation of liability
TO THE FULLEST EXTENT PERMITTED BY LAW: (a) NEITHER PARTY IS LIABLE FOR INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR FOR LOST PROFITS, REVENUE, OR DATA, EVEN IF ADVISED OF THE POSSIBILITY; AND (b) TANDEMDOC’S TOTAL LIABILITY FOR ALL CLAIMS RELATING TO THE SERVICE IS LIMITED TO THE GREATER OF THE AMOUNTS YOU PAID TANDEMDOC IN THE TWELVE MONTHS BEFORE THE EVENT GIVING RISE TO THE CLAIM, OR ONE HUNDRED U.S. DOLLARS (USD 100). THESE LIMITS DO NOT APPLY TO EITHER PARTY’S GROSS NEGLIGENCE, WILLFUL MISCONDUCT, OR FRAUD, TO YOUR PAYMENT OBLIGATIONS, TO YOUR OBLIGATIONS UNDER SECTION 17, OR TO LIABILITY THAT CANNOT BE LIMITED BY LAW.
17. Indemnification
You will defend and indemnify 4cxt, Inc. and its officers, directors, and personnel against third-party claims, damages, and reasonable costs arising from: (a) Your Content; (b) your lack of authority to connect an account, repository, or document, or to add a roster recipient; (c) your violation of Section 9, Section 13, or applicable law; or (d) your configuration or use of any AI assistant or MCP connection. This does not apply to the extent a claim results from our breach of these Terms, gross negligence, or willful misconduct. We will notify you promptly of a claim and let you control its defense, subject to our right to participate and to approve any settlement that admits fault or imposes a non-monetary obligation on us.
18. Termination
You may stop using the Service and delete your account at any time. We may suspend or terminate your access if you materially breach these Terms, if required by law, or if we discontinue the Service — in the last case with at least 30 days’ notice where practicable.
On termination we delete the stored credentials for your pairs and, where the provider supports programmatic revocation, request revocation. Your Content already lives in your own document account and repository, so no export step is needed. We ordinarily delete account, pair, and roster records within 30 days of closure; limited billing, security, and legal records may be kept longer, and routine backups expire on their normal schedule. Sections 5 (license wind-down), 7, 8, 12 through 17, and 19 through 23 survive termination.
19. Export controls and sanctions
You may not use the Service in violation of US export-control or sanctions laws, and you represent that you are not located in an embargoed jurisdiction and not on a US denied-party list.
20. Changes to these Terms
We may update these Terms. We will give advance notice of material changes by email or in-product when the law requires and, where reasonably practicable, at least 30 days before a materially adverse change takes effect; changes needed for security, legal compliance, or a provider requirement may take effect sooner. The “Last updated” date always reflects the current version. If you do not agree to a material change, cancel before its effective date and we will refund prepaid fees for the period after cancellation. Continued use after the effective date means acceptance.
21. Governing law and disputes
These Terms are governed by the laws of the State of California, excluding its conflict-of-laws rules. Except for an eligible individual small-claims action, the state and federal courts located in San Diego County, California have exclusive jurisdiction over disputes arising from these Terms or the Service, and both parties consent to their jurisdiction and venue.
Before filing a formal claim, you agree to try to resolve the dispute informally by writing to hello@tandemdoc.com with a description of it; if it remains unresolved 30 days after we receive that notice, either party may proceed. Either party may bring an eligible individual action in small-claims court in San Diego County or in the county where the claimant resides, and nothing in this section prevents either party from seeking injunctive relief.
CLASS ACTION WAIVER: TO THE FULLEST EXTENT PERMITTED BY LAW, EACH PARTY MAY BRING CLAIMS AGAINST THE OTHER ONLY IN ITS INDIVIDUAL CAPACITY, AND NOT AS A PLAINTIFF OR CLASS MEMBER IN ANY PURPORTED CLASS, COLLECTIVE, OR REPRESENTATIVE PROCEEDING. IF THIS WAIVER IS HELD UNENFORCEABLE AS TO A PARTICULAR CLAIM OR REMEDY, IT REMAINS IN EFFECT FOR ALL OTHER CLAIMS AND REMEDIES.
Nothing in these Terms limits rights or remedies that applicable law does not permit the parties to waive.
22. General
If a provision of these Terms is unenforceable, the rest remain in effect. Our failure to enforce a provision is not a waiver. You may not assign these Terms without our consent; we may assign them in connection with a merger, acquisition, reorganization, or sale of assets — except that we will not transfer information obtained from Google APIs as part of such a transaction without the affected user’s explicit prior consent, as our Privacy Policy states.
These Terms are for the sole benefit of you and 4cxt, Inc.; nothing in them confers any right or remedy on any third party, including a document reviewer, repository collaborator, or third-party provider. These Terms plus the Privacy Policy and any order or promotional terms you accept are the entire agreement about the Service. Neither party is liable for delay or failure caused by events beyond reasonable control. Notices to you may be sent to your account email; notices to us go to hello@tandemdoc.com.
23. Contact
Questions about these Terms: hello@tandemdoc.com. See also our Privacy Policy and our security overview.