Terms of Service & End-User License Agreement
Last updated: 2 July 2026
These Terms of Service (the “Terms”) govern your access to and use of the FaulTrace fault-modeling software and related websites and services (the “Service”), operated by FaulTrace (“we”, “us”). By creating an account, subscribing, or using the Service, you agree to these Terms. If you are agreeing on behalf of an organization, you represent that you have authority to bind that organization.
1. The Service
FaulTrace lets you build a model of a system and generate reliability and diagnostic artifacts (including FMEA, D-Matrix, fault trees, simulated data, and test-detection analysis). Each paid subscription is provisioned as a dedicated, isolated instance at your own subdomain.
2. Accounts & responsibilities
You are responsible for the security of your account credentials, for all activity under your account and instance, for administering your own users and their access levels, and for the accuracy and lawfulness of the data you enter.
Your instance’s initial administrator sign-in is displayed on the confirmation page shown after checkout; it is not sent by email. Treat that page and its link as confidential, sign in promptly, and complete the required password change on first sign-in, after which the initial password no longer works.
3. Subscriptions, billing & cancellation
Paid plans are billed in advance on a recurring monthly or annual basis through our payment processor, Stripe. Card details are collected and processed by Stripe; we do not store them. Subscriptions renew automatically until cancelled. You may cancel at any time; access continues until the end of the paid period. Export any data you need before your paid period ends — sign-in access ends with the paid period. Your instance and its data are then retained for a 3-day reinstatement window, during which re-subscribing restores your instance; after that window the instance is decommissioned. Fees are non-refundable except where required by law.
Fees are exclusive of taxes; you are responsible for any applicable sales, use, VAT, GST, or similar taxes, excluding taxes on our income. We may change prices with at least 30 days’ notice; changes take effect at your next renewal, and you may cancel before renewal if you do not accept them. If we are unable to provision your instance within 3 business days of your initial payment, you may cancel and receive a full refund of that initial payment.
4. Support & availability
We provide support by email at hello@faultrace.com. We make commercially reasonable efforts to keep the Service available, but the Service is provided without any uptime guarantee or service-level agreement. We may perform maintenance that briefly interrupts your instance and will make reasonable efforts to minimize disruption.
5. Acceptable use
You agree not to misuse the Service, including by attempting to breach its security or isolation, reverse-engineer it except as permitted by law, resell it without authorization, or use it to violate any applicable law or the rights of others.
You may not conduct penetration testing, vulnerability scanning, or load testing against the Service or any instance other than your own without our prior written consent; to request permission or to report a vulnerability, contact hello@faultrace.com. We may suspend an instance immediately if we reasonably believe it is compromised, is attacking other systems, or is being used in violation of this section, and will restore access once the issue is resolved.
6. Engineering judgment & default data — important
FaulTrace is a modeling and analysis aid, not a substitute for professional engineering judgment. Its outputs depend entirely on the model, parameters, and failure-rate data you provide.
Any default component libraries, failure rates (λ), or other reference values that ship with the Service are order-of-magnitude placeholders for convenience only. You must review, replace, and validate all such values against authoritative sources (e.g. MIL-HDBK-217, Telcordia, or measured field data) before relying on any quantitative result.
You are solely responsible for independently verifying all analyses and for any safety, design, certification, or other decisions made using the Service. Do not rely on the Service as the sole basis for any decision affecting safety of life or property.
7. AI features & third-party processing
Optional AI-assistant features are disabled by default and operate only if you supply your own API key or account with a third-party AI provider (currently Anthropic or OpenAI). If you use them, the content you choose to use with them (which may include your model data and any files you attach) is transmitted to that provider for processing under your own agreement with the provider. No content leaves your instance for AI processing unless you have added a credential and actively use the feature. Do not use AI features with data you are not permitted to disclose to a third-party processor. See our Privacy Policy and sub-processor list.
8. Export control & controlled data
You are responsible for complying with all applicable export-control laws (including the U.S. ITAR and EAR) and for not uploading to the Service any data whose storage or processing on our infrastructure, or transmission to third-party processors, would violate such laws or any obligation you owe. The Service is a general-purpose commercial tool and is not, by itself, an authorization to handle controlled technical data.
The Service is hosted on commercial cloud infrastructure in the United States and is not an ITAR-registered, FedRAMP-authorized, or otherwise controlled environment. You must not upload, store, or process in the Service — or transmit through any AI feature — any technical data controlled under the ITAR, any EAR-controlled technology requiring an export license, or any classified information. We may suspend an instance we reasonably believe contains controlled data and will cooperate with you to remove it. You are solely responsible for classifying your data before uploading it.
9. Intellectual property & your data
We and our licensors own the Service and all related intellectual property. Subject to these Terms and your active subscription, we grant you a non-exclusive, non-transferable right to use the Service. You retain all rights to the model data and content you create; you grant us the limited rights necessary to host and operate the Service for you.
10. Confidentiality
We treat the model data, files, and other non-public content you store in the Service as your confidential information. We will not access it except as needed to provide, secure, and support the Service; will not disclose it except to the sub-processors listed in our DPA or as required by law (in which case we will notify you where legally permitted); and will not use it to develop, benchmark, or train other products or models. Each party will protect the other’s non-public information disclosed under these Terms with at least reasonable care.
11. Warranty disclaimer
THE SERVICE IS PROVIDED “AS IS” AND “AS AVAILABLE”, WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED, OR STATUTORY, INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, ACCURACY, AND NON-INFRINGEMENT. WE DO NOT WARRANT THAT THE SERVICE OR ANY OUTPUT WILL BE ERROR-FREE, COMPLETE, OR CORRECT.
12. Limitation of liability
TO THE MAXIMUM EXTENT PERMITTED BY LAW, IN NO EVENT WILL WE BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR FOR ANY LOSS OF PROFITS, DATA, OR GOODWILL, ARISING OUT OF OR RELATED TO THE SERVICE. OUR TOTAL AGGREGATE LIABILITY FOR ANY CLAIM ARISING OUT OF OR RELATED TO THESE TERMS OR THE SERVICE WILL NOT EXCEED THE AMOUNTS YOU PAID US FOR THE SERVICE IN THE TWELVE (12) MONTHS PRECEDING THE EVENT GIVING RISE TO THE CLAIM.
13. Indemnification
You agree to indemnify and hold us harmless from claims arising out of your data, your use of the Service, or your breach of these Terms.
14. Termination
You may stop using the Service at any time. We may suspend or terminate access for breach of these Terms or non-payment. On termination, your instance is retained for a reinstatement window of 3 days after the end of your paid period and is then decommissioned. Before decommissioning we take a final snapshot of your instance’s data where technically possible, so that data can be recovered on request; contact us at hello@faultrace.com during or shortly after this window if you need an export, or at any time to request deletion of a retained final snapshot.
15. Changes
We may update these Terms; material changes will be communicated through the Service or by email. Continued use after changes take effect constitutes acceptance.
16. General
These Terms, together with the Privacy Policy and DPA they reference, are the entire agreement between you and us regarding the Service. If any provision is held unenforceable, it will be enforced to the maximum extent permitted and modified only to the minimum extent necessary, and the remainder will remain in effect. Failure to enforce a provision is not a waiver of it. You may not assign these Terms without our consent; we may assign them in connection with a merger, acquisition, or sale of assets. Notices to you may be given through the Service or to your account email; notices to us go to hello@faultrace.com. Sections 6, 8, 9, 10, 11, 12, 13, and this section survive termination. Neither party is liable for delay or failure to perform caused by events beyond its reasonable control, including cloud-provider, network, or upstream service outages — except for your obligation to pay fees for service already provided.
17. Governing law & contact
These Terms are governed by the laws of the jurisdiction in which FaulTrace is established, without regard to conflict-of-laws rules. Questions about these Terms: hello@faultrace.com.