Last updated 2026-09-24

Terms of Service

Date of issue: September 24, 2026 Operator: Kohsuke Egami (江上広介), a sole proprietor operating under the trade name ato.run

Article 1: Agreement to These Terms

These Terms of Service (the "Terms") set forth the conditions for use of "ato.run" and the websites, applications, APIs, and other services provided by Kohsuke Egami (江上広介), a sole proprietor operating under the trade name ato.run, in connection with it (collectively, the "Service"). In these Terms, "Ato", "we", "us", and "our" mean that individual operator.

You must agree to these Terms before using the Service.

If you use the Service on behalf of a company or other organization, you represent that you have the authority to bind that organization to these Terms.

Article 2: The Service

1. Overview

ato.run is a software execution and distribution platform that enables the execution, use, sharing, and distribution of software provided by users or third parties, on infrastructure we provide or on a runtime network connected to the Service.

2. Providers of Software

Software executed or distributed on the Service may be provided by you, other users, or third parties.

Except for software we provide ourselves, we are not the provider of such software.

Unless we expressly state otherwise, listing, display in search results, introduction, or any other presentation on the Service does not mean that we endorse or guarantee the safety, quality, accuracy, legality, fitness for a particular purpose, or any other aspect of that software.

3. Features We Provide

Through the Service, we may provide features such as storage of software, verification of format or compatibility, deployment to execution environments, execution, provision of access methods, sharing, distribution, data storage, and other related functions.

Any verification we perform is based on technical or observational conditions defined by us, and does not guarantee the safety, legality, completeness, absence of vulnerabilities, or any other property of the software.

4. Execution Environments

Software on the Service may run on execution environments managed by us ("Managed Runtime") or on execution environments managed by you or third parties that are connected to and used with the Service ("User Runtime").

Unless we expressly state otherwise, the administrator of a User Runtime is responsible for its availability, configuration, maintenance, security, and the management of data on that environment.

Article 3: Eligibility

You must have the legal capacity required under applicable law to use the Service.

If a minor uses the Service, they must obtain the consent of a parent or other legal guardian where required by law.

We may set conditions such as age, region, or corporate status for certain features, depending on law, the nature of the service, payment methods, or other circumstances.

We may refuse re-registration to any person who has previously been suspended or had an account deleted due to a material violation of these Terms.

Article 4: Accounts

Account registration is required to use some parts of the Service.

You must keep your registration information accurate and up to date.

You are responsible for properly managing your account, credentials, API keys, and other means of authentication.

If you become aware of unauthorized use of your account or the risk of it, you must promptly notify us.

Except where attributable to us, we may treat operations performed using your credentials as operations performed by you.

Article 5: AI, Agents, and External Clients

You may operate the Service from AI agents, software agents, or external clients through the APIs, MCP, or other connection methods we provide or approve.

Operations performed by such clients within the scope of permissions you have granted are, in principle, treated as operations based on your instructions.

You understand that AI or automated systems may perform incorrect operations, and you must use appropriate permission settings and confirmation mechanisms for operations with significant consequences, such as deletion, publication, external transmission, or purchase of important data.

We are not responsible for the behavior of external AI services or clients themselves.

Article 6: Software and Content You Provide

Rights in software, source code, data, images, documents, and other information that you upload, register, store, publish, or otherwise provide to the Service ("User Content") are, in principle, retained by you or the legitimate rights holder.

To the extent necessary to provide the Service, you grant us a non-exclusive right to use User Content by storing, reproducing, converting, verifying, executing, transmitting, displaying, distributing, or otherwise using it in technically necessary ways.

This license is limited to the scope necessary for providing the Service, ensuring security, handling failures, backups, and other operations of the Service.

You warrant that you have the rights or permissions necessary to use your User Content on the Service.

Article 7: Third-Party Software

The Service may allow the use of open source software, container images, packages, models, libraries, APIs, and other software or services provided by third parties.

These may be subject to licenses, terms of use, and other conditions set by the respective third parties.

If you bring third-party software into the Service, or execute or distribute it, you are responsible for complying with the applicable licenses and other conditions.

We do not guarantee the continued availability, compatibility, safety, quality, or legality of third-party software.

The Service may provide multiple ways to share software or data, such as public, limited, or invitation-based sharing.

You understand that, depending on the sharing settings you choose, other users or third parties may be able to access the software or data.

If you provide software or other data to a third party in a downloadable file or other independently retainable form, we cannot guarantee that copies already obtained by that third party can later be deleted, disabled, or recovered.

Even if you stop publishing or sharing, this may not affect copies that third parties lawfully obtained beforehand.

Article 9: Software Execution and Compatibility

We do not guarantee that any given software can run on all execution environments.

Running software may require a compatible execution environment, operating system, CPU, GPU, runtime, libraries, external services, network connectivity, or other conditions.

If the required conditions are not met, the software may not run on the Service.

Even if the Service has verified a certain state or behavior of software, that verification means only that the observational conditions defined by us were met; it does not guarantee that the internal state, execution environment, or all other conditions are completely identical to a past execution.

Article 10: Data Storage

The Service may allow storage of saved data, files, Assets, execution state, and other data related to your software.

Conditions such as storage capacity, retention period, and backup methods are governed by your plan or the information displayed on the Service.

You are responsible for maintaining backups or exports of important data independent of the Service.

We implement reasonable security management measures, but we do not guarantee that data will be stored permanently or that no loss, corruption, or other failure will occur.

Article 11: Privacy

Our handling of your personal and other information is governed by the separately established Privacy Policy.

If your User Content contains personal information of third parties, you are responsible for securing the authority, consent, or other legal basis necessary to handle that information on the Service.

Depending on the location of execution environments, third-party services, or User Runtimes, data may be processed in a location different from your country or region. Specific handling follows the Privacy Policy and other information we present.

Article 12: Fees

Parts of the Service may be provided for a fee.

Fees, free tiers, usage allowances, billing units, payment timing, and other conditions are governed by the pricing displayed on the Service, the order screen, or other conditions we separately present.

Where usage-based billing applies, fees may be calculated based on compute time, GPU usage time, storage usage, data transfer volume, or other usage metrics we define.

We may change the service content or pricing structure. Where prior notice is required by law, such as for continuing contracts, we will notify you by an appropriate method.

Refunds of paid fees are governed by our prescribed conditions, except where required by law or separately specified by us.

Article 13: Free Use and Experimental Features

We may provide all or part of the Service free of charge, on an experimental basis, or in similar forms.

Such features may be changed, limited, or discontinued without notice, and may have lower availability or stability than generally provided features.

Unless we expressly state otherwise, we do not guarantee any particular availability or continued provision of experimental features.

Article 14: Prohibited Conduct

You must not use the Service to engage in: violations of law; infringement of third-party rights; unauthorized access or assistance with it; distribution or operation of malware, botnets, or other harmful software; unauthorized acquisition of credentials; bulk unsolicited communications; DoS or DDoS; scanning or attacking systems without authorization; circumventing usage limits, billing, or security mechanisms of us or third parties; intentionally generating excessive load; or any other conduct that causes damage to the Service or third parties.

We may separately define more detailed prohibitions in an Acceptable Use Policy.

If you perform operations that may normally be prohibited for legitimate purposes such as security research, you must follow the procedures or obtain the permissions we separately provide.

Article 15: Security

We implement reasonable technical and organizational measures to ensure the safety of the Service.

However, communications over the Internet, software you provide, third-party software, and User Runtimes carry inherent risks, and we do not guarantee that no security issues will occur.

You understand that running software may affect the data, networks, or other resources that the software is permitted to access.

If we detect unauthorized use or a security risk, we may take necessary measures such as stopping software execution, restricting network access, or suspending publication.

Article 16: Intellectual Property Rights

Intellectual property rights in the Service, the ato.run name, logos, software, UI, documentation, and other content we provide belong to us or the legitimate rights holders.

Except as expressly provided, these Terms do not transfer our intellectual property rights to you.

For Ato or other software provided as open source, the applicable open source license takes precedence over these Terms.

Article 17: Response to Rights Infringement

If we receive a reasonable report that content or software on the Service infringes intellectual property rights, privacy, or other third-party rights, we may restrict access to, suspend publication of, delete, or take other measures we deem necessary on the affected content.

Where appropriate, we may notify the affected user of the report and provide an opportunity to respond.

Article 18: Changes to the Service

We may change the features, specifications, supported Runtimes, APIs, or other aspects of the Service for reasonable reasons such as improvement, security, legal compliance, or technical circumstances.

We will endeavor to provide advance notice, within a reasonable scope, of changes that materially affect users.

However, this does not apply where advance notice is difficult, such as for urgent security responses.

Article 19: Suspension of the Service

We may suspend all or part of the Service when necessary due to maintenance, failures, security issues, suspension of third-party services, force majeure, or other circumstances.

Software running on the Service may also be stopped or restarted due to Runtime, network, external service, or other circumstances.

Unless we provide an explicit Service Level Agreement, we do not guarantee any particular uptime percentage or continuous operation time for the Service.

Article 20: Suspension of Use

If you violate these Terms, if unauthorized use or a security risk is recognized, if payment of fees is not made, or in other cases where we reasonably determine it necessary for the proper operation of the Service, we may take necessary measures such as restricting your use of the Service, stopping software execution, suspending publication, or suspending your account, without prior notice or with a reasonable notice period.

Article 21: Withdrawal and Termination

You may terminate your use of the Service by the method we prescribe.

After termination, your software, saved data, and other information may be deleted after the retention period we separately specify has elapsed.

We may retain information for the necessary period where required for legitimate reasons such as legal compliance, billing, security, fraud prevention, or dispute resolution.

Termination does not cause copies held by third parties to whom you exported or distributed data to be deleted.

Article 22: Scope of Warranty

We provide the Service with reasonable care.

However, to the extent permitted by applicable law, we do not guarantee that the Service will be fit for your particular purpose, always available, free of errors or vulnerabilities, capable of running any software, produce identical results on all Runtimes, or that third-party software is safe or legal.

Verification results, compatibility information, execution records, and other information displayed on the Service are each based on their respective technical conditions and point of observation.

Article 23: Limitation of Liability

We are not liable for damages not attributable to us.

If damages are caused to you by our negligence, to the extent permitted by applicable law, our liability for damages is limited to ordinary and direct damages.

The preceding paragraphs do not apply in cases of our willful misconduct or gross negligence, or where limitation of liability is not permitted under applicable law.

If you qualify as a "consumer" under the Consumer Contract Act, the limitations in this Article do not apply to the extent they conflict with that Act or other mandatory provisions.

Article 24: Your Responsibility

You are responsible for the software and User Content you provide to, execute on, publish, or distribute through the Service.

If a dispute arises with a third party due to your conduct, your violation of these Terms, or your User Content, you must resolve it at your own responsibility and expense.

However, this does not apply to the extent attributable to us.

Article 25: External Services

The Service may integrate with code hosting services, cloud services, payment services, AI services, and other third-party services.

Those services are governed by the terms of use and privacy policies set by their respective providers.

Parts of the Service may become unavailable due to the suspension, change, or termination of third-party services.

Article 26: Changes to These Terms

We may change these Terms when reasonably necessary due to changes in law, changes to the Service, or other circumstances.

For changes that materially affect users, we will provide advance notice by display on the Service, email, or other reasonable methods, in accordance with applicable law.

If you use the Service after the effective date of the amended Terms, the amended Terms apply, except where separate consent is required under applicable law.

Article 27: Notices

Notices from us to you will be made by display on the Service, transmission to your registered email address, or other methods we deem appropriate.

You must keep your registration information up to date so that you can receive important notices from us.

Article 28: Assignment

You may not assign your position under these Terms or your rights and obligations to a third party without our prior consent.

We may transfer our position under these Terms, user information, and other rights and obligations related to the Service to a successor in connection with a business transfer, company split, or other business succession.

Article 29: Severability

If any part of these Terms is held invalid or unenforceable by law or by a court, the remaining parts remain in effect.

Article 30: Governing Law and Jurisdiction

These Terms are governed by and interpreted in accordance with the laws of Japan.

Unless otherwise permitted by law, the Tokyo District Court shall be the exclusive agreed court of first instance for disputes between us and you related to the Service or these Terms.

Article 31: Contact

For inquiries regarding the Service or these Terms, contact:

Operator: Kohsuke Egami (江上広介), a sole proprietor (trade name: ato.run) Address: 2F-C, Shibuya Dogenzaka Tokyu Building, 1-10-8 Dogenzaka, Shibuya-ku, Tokyo, Japan Contact: support@ato.run