Welcome to our applications and website.
Before you begin using our applications and website, please note that these Terms of Service (hereinafter referred to as the "Terms") govern the rights and obligations between you and Levinthal. Please read all terms carefully, especially those highlighted in bold. If you have any questions, comments, or suggestions about these Terms, you may contact us. If you do not understand or agree to any part of these Terms, please do not use our applications or website. By installing or using our applications or website, you acknowledge that you have read, understood, and accepted these Terms.
These Terms may not set out every right and obligation between you and Levinthal, so separate agreements may apply to specific modules (each, a "Specific Agreement").A Specific Agreement supplements these Terms, forms an integral part of them, and has the same legal effect. If a Specific Agreement conflicts with these Terms, it prevails. For example, to learn more about how we collect, use, store, and protect your personal information and what rights you have, you may read the Lévin™ Harness Privacy Policy (hereinafter referred to as the "Privacy Policy").
1. Application Description and Scope of These Terms
Lévin™ Harness Preview is a desktop application released by Hangzhou Levinthal Biotechnology Co., Ltd. (hereinafter referred to as "we" or "Levinthal") and designed with a "local-first" approach (hereinafter referred to as the "Application," "this Application," or "Lévin™ Harness"). This Application is currently available as preview software; the current version supports macOS only, and versions for other platforms are planned.
In this Application, you may configure and use third-party services such as artificial intelligence models (hereinafter referred to as "Models"), web search, iCloud backups, plugins, MCP services, or remote SSH hosts. We specifically remind you that content generated by the third-party services you configure through this Application is for reference only and cannot substitute for medical diagnosis or treatment advice, legal advice, compliance review, financial or investment advice, security assessments, scientific verification, or the independent judgment of qualified professionals in the relevant fields. This Application is not designed, validated, or certified for medical diagnosis, treatment, clinical decision-making, regulatory-compliance determinations, statutory filings, or other high-risk professional uses, and Levinthal does not warrant that it meets the professional standards, technical conditions, or legal requirements applicable to such uses.
These Terms apply to your installation and use of Lévin™ Harness and your access to the official Lévin™ Harness website (available at http://levinthal.design/levin-harness/, hereinafter referred to as the "Website").
You should read these Terms and the Privacy Policy before installing the Application or accessing the Website. Continuing to install or use our applications or website indicates that you agree to be bound by these Terms and the Privacy Policy. If you do not agree, please do not install or use our applications or website.
You must have the legal capacity required to enter into these Terms. If you are a minor, you should use our applications under the consent and guidance of your parent or other legal guardian.
2. License and Fees
Subject to your compliance with these Terms, we grant you a limited, revocable, non-exclusive, and non-transferable license to install and use this Application for non-commercial purposes.
Any modification or redistribution of this Application, as well as any commercial copying, use, distribution, provision as SaaS or a hosted service, resale, operation on behalf of others, or integration of this Application or any part of it into products or services offered to commercial customers, requires Levinthal's separate written permission. If you have such needs, please contact us via the email address listed in Section 16.
Under these Terms, you may use this Application free of charge for personal study, research, and other non-commercial purposes. The AI models and other third-party services you connect to in Lévin™ Harness are provided independently by their respective providers. Those providers may charge you directly for API, token, computing, storage, network, or subscription fees. You are responsible for monitoring and paying these fees, as well as any applicable taxes.
If we later adjust the scope of free use, we will notify you in a reasonable manner before the adjustment takes effect.
3. Agent Operations and Your Responsibilities
Lévin™ Harness may, upon your instructions, read and modify files, run code and terminal commands, access connected tools, operate remote computers, and execute multi-step tasks. These operations may produce real and irreversible effects.
You are responsible for the instructions, permissions, files, systems, credentials, and third-party accounts you provide to this Application, and you bear the consequences of operations carried out on your instructions.
Please manually review the operation before authorizing the Agent to perform it or adopting its output. For operations involving data deletion, bulk modification, network access, software installation, sending information externally, or production-environment operations, confirm the scope of the operation, permissions, parameters, and expected impact before proceeding. We specifically remind you that third-party Models may misinterpret your instructions, generate inaccurate results, repeatedly perform operations, or consume more third-party resources than expected.
Please back up important data properly. When handling important, regulated, confidential, or production data, use an appropriately isolated environment.
4. Models, Plugins, and Third-Party Services
You may connect Models, web search, iCloud, plugins, MCP services, remote SSH hosts, and other third-party services in Lévin™ Harness. These third-party services are each governed by their own terms of service, privacy policies, billing rules, availability, and security measures.
You are responsible for confirming that you have the right to send data to a third-party service and for ensuring that your use complies with that service's rules. We cannot control third-party services and do not warrant their output, uptime, security, billing, or continued compatibility.
Plugins, skills, scripts, MCP services, Models, and their associated components may invoke tools, execute code, access files or network resources, or process user input, files, web content, and third-party information. Before enabling or authorizing their use, please verify their source, publisher, version, permissions, data-handling practices, dependencies, and update channels. Until verification is complete, treat them as untrusted components, avoid granting them unnecessary permissions, and avoid providing sensitive information. For high-risk permissions—such as executing commands, accessing local files, modifying system configurations, sending data to third parties, or operating production environments—authorize them individually only after confirming their necessity and expected impact.
5. User Conduct
5.1 Please do not use this Application for decisions that may have legal or other significant effects on individuals, including decisions about a person's credit, education, employment, housing, insurance, legal affairs, medical care, or other important matters.
5.2 You must not use this Application to violate applicable laws and regulations or to infringe upon our or any third party's lawful rights and interests or the public interest, including but not limited to:
(1) accessing systems, accounts, files, or data without authorization;
(2) developing, distributing, or running malware, credential-stealing tools, destructive code, or unauthorized surveillance tools;
(3) infringing upon privacy, trade secrets, intellectual property, or other lawful rights;
(4) producing, distributing, or publishing content prohibited by laws and regulations, or endangering national security or the public interest;
(5) exploiting, endangering others, or assisting in the infliction of harm, including harm to minors;
(6) concealing the fact that content is AI-generated when disclosure is required by law or industry rules;
(7) using the Application for dangerous purposes that may cause serious harm to personal health, psychology, society, or the economy, or that violate research ethics;
(8) exploiting advantages in algorithms, data, or platforms to engage in monopolistic or unfair-competition conduct;
(9) engaging in fraudulent, deceptive, or misleading activities;
(10) any other use prohibited or restricted by applicable laws and regulations, or that may harm the public interest or the lawful rights and interests of us or any third party.
5.3 You must not engage in any of the following activities that endanger cybersecurity, the operational security of this Application, or the orderly operation of its services:
(1) unlawfully intruding into networks, interfering with normal network functions, or stealing network data, or other activities endangering cybersecurity;
(2) providing programs or tools specifically designed for unlawful network intrusion, interference with normal network functions or protective measures, or theft of network data, or other activities endangering cybersecurity;
(3) knowingly providing technical support, advertising and promotion, payment settlement, or other assistance to anyone engaged in activities endangering cybersecurity;
(4) using this Application, without our authorization, to develop or serve applications, products, or services that may compete with this Application;
(5) copying, transferring, leasing, lending, selling, or sublicensing all or part of this Application beyond the scope of the license, or otherwise abusing this Application;
(6) any other conduct that endangers cybersecurity, the operational security of this Application, or the orderly operation of its services.
6. Rights and Obligations
6.1 Your rights and obligations: You may use our applications and website in accordance with these Terms and may provide feedback or lodge complaints. In using our applications or website, you must comply with laws and regulations and with these Terms, as well as any other agreements, rules, and policies we publish. You must not use our applications or website for illegal or non-compliant activities, or for activities that may endanger national security or the public interest, infringe upon others' lawful rights and interests, or disrupt the orderly operation of the platform. You may not assign any of your rights or obligations under these Terms.
6.2 Our rights and obligations: We will actively fulfill our statutory obligations, protect cybersecurity, data security, and your personal information, protect the lawful interests and physical and mental health of minors, endeavor to maintain the safe, stable, and continuous operation of our applications and website on the basis of existing technology, and strive to improve and upgrade our technology. However, due to technological and resource constraints, we cannot guarantee that we will always respond to your needs promptly; we appreciate your understanding. If you violate any law or regulation, these Terms, or the Privacy Policy, we may take corresponding measures, including but not limited to revoking your license and refusing, suspending, or ceasing to provide services to you.
7. Intellectual Property and Other Rights
Levinthal owns all rights recognized under applicable laws in and to this Application and the Website (including but not limited to software, technology, programs, code, user interfaces, webpages, text, graphics, layout design, and electronic documentation), including copyrights, trademark rights, patent rights, and other rights recognized by law. The license we grant you under these Terms authorizes only rights related to the use of this Application and does not include any license to the "Lévin™ Harness" name, logo, or brand elements. Except to the extent necessary to describe your legitimate use of this Application, you must not use the aforementioned brand elements.
Provided that you do not infringe upon others' lawful intellectual-property or other rights and that you comply with these Terms, you retain, to the extent permitted by law, any intellectual-property and other rights in your input and output content, and remain responsible for that content. You must ensure that you hold the necessary rights and authorizations to use your input content (files provided, prompts, data, and other content) for this Application and the third-party services you connect to.
For content you generate using a Model, the ownership of rights in such content is determined in accordance with the relevant policies of the Model provider.
These Terms do not transfer ownership of any third-party Models, plugins, open-source software, datasets, or other materials, and their respective license terms remain applicable.
8. Application Updates
The preview version may contain defects, unfinished features, or compatibility issues. We may add, change, remove, restrict, suspend, or terminate some features of the preview version, or discontinue the preview version, and may also release updates that alter compatibility or data formats.
We do not commit to specific release dates, feature scope, service levels, or permanent free availability. Where reasonably practicable, material changes will be communicated before they take effect.
9. Liability for Breach
You are solely responsible for all legal liability arising from your breach of these Terms, as well as any claims and demands asserted by third parties. If your breach causes us any loss, you shall fully compensate us (including litigation fees, arbitration fees, attorney's fees, notarization fees, announcement fees, appraisal fees, travel expenses, evidence-collection fees, damages, liquidated damages, settlement costs, administrative fines, and other expenses incurred by us in enforcing our rights).
10. Limitation of Liability
10.1 To the maximum extent permitted by applicable law, this Application and the Website are provided on an "as is" and "as available" basis. Levinthal makes no implied warranties of merchantability, fitness for a particular purpose, non-infringement, accuracy, uninterrupted operation, or error-free operation.
10.2 You may configure third-party services when using this Application. Accordingly:
(1) we do not endorse or assume responsibility for any third-party service;
(2) we make no representations or warranties of any kind regarding the availability, accuracy, security, legality, or any other aspect of third-party services. Any use of or access to third-party services is at your own discretion and risk;
(3) to the maximum extent permitted by applicable law, we assume no liability for any loss or damage you suffer arising from your use of or reliance on third-party services, including but not limited to any service failure, data breach, inaccurate information, or third-party misconduct;
(4) you should read and comply with the terms, conditions, privacy policies, or other agreements applicable to your use of third-party services;
(5) your interactions with the above services may also be subject to additional fees, costs, terms, or restrictions imposed by such third parties.
10.3 Unless laws and regulations expressly provide otherwise, we assume no indirect, incidental, special, consequential, or punitive liability for any loss you suffer. To the extent permitted by applicable law, our total liability to you, regardless of the cause or manner, will not exceed the total fees you paid to Levinthal during your use of this Application; if that amount is zero, the cap shall be RMB 100.
10.4 We reserve the right to assign any of our rights or obligations under these Terms to any affiliate, subsidiary, or successor to this service.
11. Suspension and Termination
You may stop using and uninstall this Application at any time. This Application runs locally on your device; Levinthal will not remotely access, operate, or control your device through this Application. If you materially breach these Terms, including but not limited to breaching the license granted to you under these Terms, we will terminate your license, and you must not copy, use, modify, distribute, resell, or transfer this Application in any form. Where appropriate and required by law, we will notify you.
Provisions that by their nature should survive the termination of these Terms, including provisions on ownership of rights, limitation of liability, and liability for use prior to termination, will remain in effect, and you shall remain bound by them.
12. Changes to These Terms
As the product evolves or legal requirements change, we may update these Terms. The top of this page will show the update date. We will notify you of material changes through Website announcements and in-Application notices. If you continue to use this Application after a revised version is published, you are deemed to accept the revised Terms.
13. Support and Feedback
13.1 Feedback license: By providing feedback, suggestions, bug reports, use cases, or improvement ideas about this Application, you grant Levinthal a royalty-free, perpetual, irrevocable, worldwide, non-exclusive license to use, copy, modify, and otherwise process that content to improve this Application and develop related products. Except as otherwise required by applicable law, Levinthal has no obligation to pay you or keep that content confidential.
13.2 Submission restrictions: Please do not submit API keys, passwords, regulated data, confidential information, or unrelated personal data through the Website's "Support & Feedback" module; remove sensitive content before submission. Levinthal neither requires nor expects you to provide such information.
13.3 Support service level: Support during the preview stage is provided on a "best-effort" basis. Levinthal does not commit to response times, resolution times, or continued provision of support.
13.4 Personal-information notice: If the content you actively provide to us contains your personal information, the handling of your personal information is governed by the Privacy Policy.
14. Governing Law and Dispute Resolution
14.1 The formation, validity, interpretation, performance, and dispute resolution of these Terms are governed by the laws of the People's Republic of China (for purposes of these Terms, excluding the laws of the Hong Kong Special Administrative Region, the Macao Special Administrative Region, and Taiwan).
14.2 Any dispute arising from these Terms or your use of this Application or the Website should first be resolved through friendly consultation between the parties. If consultation fails, either party may bring an action before the people's court with jurisdiction over Hangzhou Levinthal Biotechnology Co., Ltd.'s domicile.
15. Miscellaneous
15.1 Notices: You agree that we may deliver notices under these Terms through Website announcements and similar means; publication through such means is deemed to have been delivered to you. You may also review these Terms and the Privacy Policy within the Application.
15.2 Entire agreement: These Terms and the Privacy Policy together constitute the entire agreement between the parties regarding this Application.
15.3 Severability: If any provision of these Terms is held invalid or unenforceable, the remaining provisions remain in effect, and the parties shall replace it with a valid provision closest to the original intent.
15.4 Force majeure: If Levinthal is unable to perform its obligations due to force majeure that is unforeseeable, unavoidable, and insurmountable (including natural disasters, war, changes in laws, regulations, or policies, cyberattacks, and basic telecommunications failures), Levinthal will be excused from liability to the extent affected, provided that we will use reasonable efforts to mitigate the impact and provide notice in accordance with law.
15.5 Export control and sanctions: You agree to comply with the export-control and trade-sanctions laws of your jurisdiction and those applicable to you, and not to obtain, use, redistribute, or re-export this Application in violation of those laws.
15.6 Language versions: These Terms are made in both Chinese and English. If there is any inconsistency, ambiguity, or conflict between the two language versions, the Chinese version shall prevail.
16. Contact Us
16.1 If you have any issue using the Application or Website, please visit the Website's "Support & Feedback" module. You may also contact us using the following information:
Email: info@levinthal.bio
16.2 Contact address: 2nd Floor, Building 1, X-Valley, No. 2 Qiannong 1st Road, Xiaoshan District, Hangzhou, Zhejiang Province, China.