Terms and Conditions
Last updated: July 17, 2026
1. Agreement to Our Legal Terms
These Terms and Conditions (the “Terms”) govern your access to and use of the Haydn platform and related services (collectively, the “Service”) provided by Haydn Inc., a Delaware corporation with its registered address at 251 Little Falls Drive, Wilmington, New Castle County, Delaware 19808, United States (the “Company,” “we,” “us,” or “our”). By accessing or using the Service, creating an account, or clicking to accept these Terms, you agree to be bound by them. If you do not agree to these Terms, you may not access or use the Service.
If you are entering into these Terms on behalf of an organization, you represent that you have authority to bind that organization, and “you” and “Customer” refer to that organization.
If a separate written agreement (such as a Master Subscription Agreement, Order Form, or Enterprise Agreement) has been signed between you and the Company covering the Service, that agreement governs to the extent it conflicts with these Terms.
You can contact us at support@haydn.ai.
2. Description of the Service
Haydn is a software-as-a-service (SaaS) platform that uses artificial intelligence and machine learning to extract, structure, and organize financial data (including, for example, cap tables and financial statements) from documents that Customer uploads, for use by venture capital, private equity, and other investment professionals.
The Service may include automated extraction, review, and reporting features. Because the Service applies automated processing, outputs may contain errors or omissions. You are responsible for reviewing and verifying all outputs before relying on them. The Service is a tool to assist your work and is not a substitute for professional financial, accounting, legal, tax, or investment advice.
We may update, enhance, or modify the features and functionality of the Service from time to time.
3. Eligibility and Accounts
Eligibility. You must be at least 18 years old and capable of forming a binding contract to use the Service. The Service is intended for business and professional use, not for personal, family, or household purposes.
Account registration. To use most features you must register for an account and provide accurate, current, and complete information. You agree to keep your account information up to date.
Account security. You are responsible for safeguarding your account credentials and for all activity that occurs under your account. You must notify us promptly at support@haydn.ai if you suspect any unauthorized access to or use of your account.
Users. If you provision access for additional users within your organization, you are responsible for their compliance with these Terms and for the actions taken through their accounts.
4. Acceptable Use
You agree not to, and not to permit any user or third party to:
- use the Service in violation of any applicable law, regulation, or third-party right;
- upload or process any data that you do not have the right to upload or process, or that infringes or misappropriates the rights of any third party;
- reverse engineer, decompile, disassemble, or otherwise attempt to derive the source code, models, or underlying structure of the Service, except to the extent that restriction is prohibited by applicable law;
- copy, modify, distribute, sell, resell, sublicense, or create derivative works of the Service except as expressly permitted;
- access the Service to build a competing product or to benchmark it without our prior written consent;
- interfere with, disrupt, or degrade the integrity, security, or performance of the Service, including by introducing malware, attempting to gain unauthorized access, or circumventing usage or access limits;
- use the Service to send unsolicited communications or to store or transmit unlawful, defamatory, or malicious content;
- use any automated means (scraping, bots) to access the Service in a manner that exceeds reasonable use or violates these Terms; or
- remove, obscure, or alter any proprietary notices in the Service.
We may investigate and take appropriate action, including suspension or termination, against any use that violates this Section.
5. Customer Data, Privacy, and Security
Ownership of Customer Data. As between you and the Company, you (or your licensors) retain all right, title, and interest in and to the data, documents, and other content you upload to or generate through the Service (“Customer Data”), including the financial documents you submit for extraction and the extracted outputs. We do not claim ownership of your Customer Data.
License to operate the Service. You grant us a limited, non-exclusive license to host, copy, process, transmit, and display Customer Data solely as necessary to provide, maintain, secure, and support the Service for you, and as otherwise permitted under these Terms and any applicable Data Processing Addendum.
Privacy. Our handling of personal data is described in our Privacy Policy, which is incorporated into these Terms by reference. Where the parties have entered into a Data Processing Addendum (DPA), the DPA governs the processing of personal data on your behalf.
Security. We maintain an information-security program with administrative, technical, and organizational safeguards designed to protect Customer Data appropriate to its sensitivity, including encryption of data in transit (TLS) and at rest, per-tenant data isolation enforced at the database layer, and invite-only access controls. No method of transmission or storage is completely secure, and we cannot guarantee absolute security.
Data hosting and international transfers. The Service is hosted on Vercel infrastructure in the AWS eu-west-2 (London, United Kingdom) region, where Customer Data is stored at rest. The Company is a United States (Delaware) entity, and certain subprocessors we use to provide the Service may process data in other regions. By using the Service, you consent to these transfers, subject to our Privacy Policy and any applicable DPA.
Use of data for model training. We do not use Customer Data to train our artificial-intelligence or machine-learning models. Third-party AI subprocessors process Customer Data solely to provide extraction and related features of the Service for you.
Aggregated and de-identified data. We may generate and use aggregated, de-identified usage data (which does not include the content of Customer Data and does not identify you or any individual) to operate, analyze, and improve the Service.
Confidential financial data. Because Customer Data may include sensitive and confidential financial information, we treat Customer Data as your Confidential Information under Section 9 and will not access or use it except to provide and support the Service, to comply with law, or as you otherwise authorize.
6. Intellectual Property
Company IP. The Service, including all software, models, algorithms, user interfaces, documentation, and the look and feel, and all intellectual property rights therein, are and remain the exclusive property of the Company and its licensors. Except for the limited access rights expressly granted in these Terms, no rights are granted to you.
Feedback. If you provide suggestions, ideas, or feedback about the Service, you grant us a perpetual, irrevocable, royalty-free license to use that feedback to improve the Service, without obligation to you.
Trademarks. “Haydn,” the haydn.ai name, and associated logos are trademarks or common-law marks of the Company. You may not use them without our prior written consent.
7. Fees and Subscription
Fees. Access to the Service may require payment of fees as set out in an Order Form, subscription plan, or other written agreement between you and the Company (“Order Form”).
Payment terms. Unless otherwise stated in an Order Form, fees are billed in advance, are non-refundable except as required by law or as expressly stated in the applicable Order Form, and are exclusive of taxes, which are your responsibility except for taxes on our net income.
Changes to fees. We may change fees effective on renewal by providing at least thirty (30) days’ prior notice.
Non-payment. We may suspend or terminate access for overdue amounts in accordance with Section 12 and the applicable Order Form.
8. Confidentiality
“Confidential Information” means non-public information disclosed by one party (“Discloser”) to the other (“Recipient”) that is designated confidential or that reasonably should be understood to be confidential given its nature and the circumstances of disclosure. Customer Data is your Confidential Information. The Service and non-public information about it are our Confidential Information.
The Recipient will: (a) use Confidential Information only to exercise its rights and perform its obligations under these Terms; (b) protect it using at least reasonable care; and (c) not disclose it except to employees, contractors, and advisors who need to know it and are bound by confidentiality obligations at least as protective as these.
Confidential Information excludes information that is or becomes public through no fault of the Recipient, was rightfully known without confidentiality obligations, is independently developed, or is rightfully received from a third party. The Recipient may disclose Confidential Information if required by law, provided it gives reasonable prior notice where legally permitted.
9. Disclaimers of Warranties
THE SERVICE IS PROVIDED “AS IS” AND “AS AVAILABLE,” WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED, OR STATUTORY. TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE COMPANY DISCLAIMS ALL IMPLIED WARRANTIES, INCLUDING MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT.
WITHOUT LIMITING THE FOREGOING, WE DO NOT WARRANT THAT THE SERVICE WILL BE UNINTERRUPTED, ERROR-FREE, OR SECURE, OR THAT ANY DATA EXTRACTED OR GENERATED BY THE SERVICE (INCLUDING AI-ASSISTED OUTPUTS) WILL BE ACCURATE, COMPLETE, OR RELIABLE. YOU ARE SOLELY RESPONSIBLE FOR REVIEWING AND VERIFYING OUTPUTS BEFORE RELYING ON THEM. THE SERVICE DOES NOT PROVIDE FINANCIAL, ACCOUNTING, LEGAL, TAX, OR INVESTMENT ADVICE.
Some jurisdictions do not allow the exclusion of certain warranties, so some of the above exclusions may not apply to you.
10. Limitation of Liability
TO THE MAXIMUM EXTENT PERMITTED BY LAW, NEITHER PARTY WILL BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR EXEMPLARY DAMAGES, OR FOR ANY LOSS OF PROFITS, REVENUE, DATA, GOODWILL, OR BUSINESS, ARISING OUT OF OR RELATING TO THESE TERMS OR THE SERVICE, WHETHER IN CONTRACT, TORT, OR OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
EXCEPT FOR A PARTY’S INDEMNIFICATION OBLIGATIONS UNDER SECTION 11, A BREACH OF SECTION 8 (CONFIDENTIALITY), OR AMOUNTS OWED UNDER SECTION 7, EACH PARTY’S TOTAL AGGREGATE LIABILITY ARISING OUT OF OR RELATING TO THESE TERMS OR THE SERVICE WILL NOT EXCEED THE TOTAL FEES PAID OR PAYABLE BY YOU TO THE COMPANY IN THE TWELVE (12) MONTHS PRECEDING THE EVENT GIVING RISE TO THE CLAIM.
The limitations in this Section apply to the fullest extent permitted by law and reflect an allocation of risk between the parties. Some jurisdictions do not allow certain limitations, so some of the above may not apply to you.
11. Indemnification
You will defend, indemnify, and hold harmless the Company and its affiliates, officers, directors, employees, and agents from and against any third-party claims, damages, liabilities, costs, and expenses (including reasonable attorneys’ fees) arising out of or relating to: (a) your Customer Data, including any claim that it infringes or misappropriates third-party rights or violates applicable law; (b) your use of the Service in violation of these Terms; or (c) your breach of these Terms.
12. Suspension and Termination
Suspension. We may suspend your access to the Service, in whole or in part, if we reasonably believe that: (a) your use poses a security risk or may harm the Service or other customers; (b) you are in breach of these Terms (including non-payment); or (c) suspension is required by law. Where practicable, we will provide notice.
Termination. Either party may terminate these Terms: (a) for convenience on thirty (30) days’ written notice, subject to the term of any applicable Order Form; or (b) if the other party materially breaches these Terms and fails to cure the breach within thirty (30) days after written notice. Any applicable Order Form governs termination of paid subscriptions.
Effect of termination. Upon termination, your right to access the Service ceases. For a period of thirty (30) days after termination, you may request an export of your Customer Data; thereafter we may delete it in accordance with our retention practices and any applicable DPA. Provisions that by their nature should survive (including Sections on ownership, confidentiality, disclaimers, limitation of liability, indemnification, and governing law) survive termination.
13. Changes to These Terms
We may modify these Terms from time to time. If we make material changes, we will provide notice by posting the updated Terms at haydn.ai/terms-and-conditions with a new “Last updated” date and by emailing the account contact, with at least thirty (30) days’ advance notice where practicable. Your continued use of the Service after the changes take effect constitutes acceptance of the updated Terms. If you do not agree, you must stop using the Service.
14. Governing Law and Dispute Resolution
These Terms are governed by the laws of the State of Delaware, United States, without regard to its conflict-of-laws principles. Subject to the informal-negotiation process below, the parties submit to the exclusive jurisdiction of the state and federal courts located in New Castle County, Delaware, and each party waives any objection to venue in those courts. Either party may seek injunctive or other equitable relief in any court of competent jurisdiction to protect its intellectual property or Confidential Information.
Informal negotiations. Before filing a claim, the parties agree to first attempt to resolve any dispute arising out of or relating to these Terms or the Service informally for at least thirty (30) days, beginning on the day either party gives the other written notice of the dispute.
15. General
Entire agreement. These Terms, together with any documents incorporated by reference and any applicable Order Form or written agreement, constitute the entire agreement between you and the Company regarding the Service and supersede prior agreements on that subject.
Assignment. You may not assign these Terms without our prior written consent; we may assign them in connection with a merger, acquisition, or sale of assets.
Severability. If any provision is held unenforceable, the remaining provisions remain in effect.
No waiver. Failure to enforce any provision is not a waiver of it.
Force majeure. Neither party is liable for delays or failures due to causes beyond its reasonable control.
Notices. Notices to the Company must be sent by email to support@haydn.ai or by post to our registered address below. Notices to you may be sent by email to the address associated with your account.
16. Contact Us
Questions about these Terms may be directed to:
Haydn Inc.
251 Little Falls Drive
Wilmington, New Castle County, Delaware 19808, United States
support@haydn.ai