YuhoLAB Terms of Use
Article 1 (Application)
1. These Terms set out the conditions for using the iOS application "YuhoLAB", the "YuhoLAB Connector" for AI assistants, and the services provided through them (the "Service"), which are provided by Sorahiro Shuto (the "Operator").
2. You are deemed to agree to these Terms when you download, install or start using the App, or when you connect the Connector to an AI assistant. The App has no user account registration. For the Connector, the Operator assigns an internal ID when you sign in with Google at connection.
3. The handling of personal information is governed by the separate Privacy Policy, which prevails. If these Terms and the Privacy Policy conflict, the Privacy Policy prevails on the handling of personal information and these Terms prevail on all other matters.
4. The App is intended for users who obtain it from the App Store. When you obtain and use it from the App Store, the terms set by Apple Inc. ("Apple") also apply. Apple is not a party to these Terms.
5. The Connector is used through AI assistants provided by third parties, such as Anthropic's Claude (the "AI Services"). The terms set by the provider of an AI Service apply to your use of that AI Service. The providers of AI Services are not parties to these Terms.
Article 2 (Definitions)
1. "App": the iOS application "YuhoLAB" distributed by the Operator.
2. "API": the YuhoLAB API run by the Operator, which the App calls to load the financial data and other information shown on screen and which the Connector calls to build tool responses (it is not intended to be opened directly to third parties).
3. "EDINET": the electronic disclosure system operated by the Financial Services Agency of Japan, and the disclosure documents submitted through it.
4. "Filings": annual securities reports and the related documents the Service takes in (including amended reports).
5. "User": everyone who uses the App or the Connector.
6. "Connector": the endpoint the Operator provides for AI Services to read API data (https://mcp.yuholab.com/mcp, Model Context Protocol).
Article 3 (Content of the Service)
1. The Service collects, extracts, processes and restructures public information such as Filings that Japanese issuers submitted to EDINET, and provides, within the range stored on the Operator's servers, financial information and related data in the App.
2. The Service is provided through the App and the Connector. The main features of the App are as follows (data not yet taken in, items below display thresholds the Operator sets, and items set to hidden are not shown).
- Search of stocks by name or by conditions, and display of part of recent filing activity
- Annual financial summaries (performance, assets, efficiency and other indicators)
- Year-over-year factor breakdowns (operating profit, ROIC, ROE and so on)
- Brief company descriptions generated from Filings
- Watchlists and holdings that the User manages on their device
- Estimates of performance based on the number of shares held (a local calculation inside the App, not a portfolio management feature on a server)
3. The App is built on the YuhoLAB API run by the Operator. To display data, the App communicates with the Operator's servers (the API) over HTTPS. Opening the API directly to third parties is not part of the Service.
4. The Connector provides AI Services with read-only tools for company search, filings, financials, financial statements, business breakdowns, company overviews and so on. The tools provided and the range available may change as the Operator decides. Answers that an AI Service shows to you are generated by the AI Service, not by the Operator. The Operator is not responsible for the content of summaries, interpretations, calculations or other answers produced by AI Services.
5. The Service is not intended as investment solicitation or as advice on or the sale or purchase of financial products. The Operator is not registered as a financial instruments business operator (investment advisory or agency business) under the Financial Instruments and Exchange Act, and does not intermediate, solicit, execute orders for or extend credit for financial products.
Article 4 (What the Service does not include)
The Service does not provide a complete reproduction of the originals disclosed on EDINET or complete coverage of all stocks and all fiscal years. The Operator does not provide the following as part of the Service. Even if you can access them, the Operator has no duty to keep them available or to guarantee how they work.
- A web application for browsing stocks in a web browser, and RSS feeds
- Real-time stock prices, market values, tick data, news, and location-linked features
- Creation of user accounts in the App, and server-side syncing of watchlists and similar data
- A general-purpose public REST API product for third parties, other than the Connector
- Tax calculation, tax return preparation, and preparation of reports required by law
Article 5 (Restriction and ending of use)
1. If a User violates these Terms or the Operator judges that a User has interfered with the proper running of the Service, the Operator may restrict that User's access without notice.
2. Because the App has no accounts, there is no individual "cancellation" procedure. To stop using the App, delete (uninstall) it from your device. For erasing local data, see the Privacy Policy. To stop using the Connector, remove it in the settings of the AI Service.
Article 6 (Authentication and security)
1. The Service has no login by email address and password. The Connector asks you to sign in with Google when connecting. The Operator uses the result of the sign-in only to identify the connection, and its handling is set out in the Privacy Policy.
2. To verify genuine use of the App and prevent unauthorized access, Apple's App Attest and short-lived anonymous tokens may be used. They are not used for advertising or tracking.
3. Depending on your device environment or network conditions, safety checks or authentication such as App Attest may not complete normally, and all or part of the App may not be usable.
4. Users must not circumvent authentication procedures or rate limits (limits on the number of accesses), or call the API or the Connector by impersonating a third party. The Operator may set usage limits on the Connector.
Article 7 (Fees and costs)
1. The basic use of the Service is free of charge at present.
2. Communication charges needed to use the Service, and costs of using Apple ID, iCloud and the like, are borne entirely by the User.
3. If paid features are introduced in the future, these Terms will be revised and announced in advance. The Operator will not charge unreasonably under the Terms before revision.
Article 8 (Source and processing of data, and no guarantee of what is shown)
1. The main source of the information the Service shows is Filings of the Japanese market submitted to EDINET.
2. The Operator extracts figures, breakdowns, notes and so on from the originals (XBRL and text), builds summaries and factor breakdowns, and generates company descriptions. Company descriptions are restructured from the "business overview" and similar sections of Filings by automated processing and generative AI. They are not direct quotations of the original text and may contain expressions that differ from the intent or facts of the original.
3. To make items that differ by company and industry easier to compare, the Operator may normalize (re-map) them to general item names such as net sales and operating profit. As a result, item names on screen may not match the official account titles of each issuer.
4. Because of the process of extraction, processing, normalization and automatic generation, or the timing at which amended reports are reflected, what is shown on screen may not match the EDINET original. The Operator does not guarantee the completeness, accuracy or timeliness of what is shown, or its fitness for a particular purpose.
5. Factor breakdowns of operating profit may differ from the officially disclosed operating profit. Figures on the fund and holdings screens in the App are "estimates" calculated from the price and number of shares the User entered, and are not an accurate market valuation or a tax calculation.
6. The Service is only a tool to supplement and make easier to read the originals such as annual securities reports. When making a decision, Users must check the original information directly on EDINET of the Financial Services Agency or as disclosed by the company concerned.
7. The data of the Service is created by the Operator by editing and processing disclosure documents published on the EDINET site (Financial Services Agency). It is not unprocessed information created by the national government (the Financial Services Agency). The source notice is given in the Privacy Policy. This Article also applies to data obtained through the Connector.
Article 9 (Use of data and disclaimer)
1. The data and information provided through the Service are obtained, extracted, processed and normalized from public information.
2. Users may freely use, copy, process, redistribute and provide to third parties this data and information, for personal or commercial purposes alike. However, this must not be done in a way that makes it look like unprocessed information created by the national government (the Financial Services Agency) or like "official disclosure information".
3. When redistributing or providing this data and information to third parties, Users shall endeavor to credit the source (YuhoLAB and EDINET) and indicate that it has been processed. This is a best-efforts obligation only, and use is not restricted because attribution is absent.
4. However, the Operator does not guarantee the accuracy, completeness, timeliness, usefulness or fitness for a particular purpose of the data and information it provides.
5. Users use the data and information provided at their own responsibility, and shall check EDINET and other primary sources where necessary.
Article 10 (Intellectual property)
1. Copyright and other intellectual property rights in the App, its screen designs, the know-how for extracting, processing and compiling data, the factor breakdown algorithms, automatically generated descriptions and content created by the Operator belong to the Operator or the rightful holders. The use of the data and information the Service provides is, however, governed by Article 9.
2. Rights in the original text of Filings, XBRL, and the trade names, trademarks and logos of each company belong to their respective holders. Display by the Service does not mean a transfer or license of these rights.
3. Ownership of lists, holdings and other data that the User saves locally in the App belongs to the User. They are not sent to the Operator's servers (syncing through iCloud follows Apple's terms).
4. Where the App's source code is published under an open-source license (such as the MIT License), that license applies to the use of the source code. The use of data and information is governed by Article 9.
Article 11 (Prohibited acts)
Users must not do any of the following when using the Service.
- Acts that violate laws, these Terms, Apple's terms, or EDINET's terms of use
- Unregistered investment advice, aggressive solicitation, or publicly presenting the Service's output as "official audited financial figures"
- Imposing load on the API, the App or the Connector beyond normal use, such as circumventing authentication, excessive load, or mass retrieval beyond the usage limits the Operator sets
- Tampering with App Attest, access control tokens, logs and the like, or impersonation
- Providing benefits to antisocial forces, or use by persons who are antisocial forces
- Any other act the Operator judges inappropriate on reasonable grounds
Article 12 (Disclaimer)
1. The Service is provided "AS IS". The Operator does not guarantee the accuracy, timeliness or continuity of data, the absence of errors or failures, or that any particular investment result will be obtained through use of the Service.
2. The Service is not investment advice, and the User is entirely responsible for investment results. The Operator does not compensate for any damage (including investment losses) arising from the User's use of what the Service shows as a reference.
3. Except where the Operator acts intentionally or with gross negligence, the Operator is not legally liable for damage arising from changes to, interruption of or delay in the Service, communication failures, errors in data, outages of external services such as Apple, Google, Cloudflare and AI Services, or loss of data on devices or in iCloud.
Article 13 (Changes, interruption and termination of the Service)
1. The Operator may change the content of the Service (adding or removing features, reviewing the data taken in, and so on) without prior notice.
2. The Operator may temporarily interrupt or terminate the Service without prior notice for system maintenance, handling failures, preventing unauthorized access or operational reasons.
3. When terminating the Service, the Operator will notify Users by a reasonable method, such as an announcement on a public web page.
Article 14 (Changes to these Terms)
The Operator may change these Terms when it judges it necessary. The changed Terms take effect when posted on this website. For important changes, the "Last updated" date of the posted page is updated.
Article 15 (Severability)
Even if any provision of these Terms is judged unlawful or invalid by a court or the like, the remaining provisions continue in full force.
Article 16 (Governing law and jurisdiction)
1. These Terms are interpreted under the laws of Japan.
2. For any dispute between the Operator and a User concerning the Service, the Osaka District Court is the exclusive agreed court of first instance.
Article 17 (Contact)
For questions about these Terms, contact:
- Operator: Sorahiro Shuto
- Contact: support@yuholab.com
- Privacy Policy: https://yuholab.com/en/privacy
Supplementary provisions
Established September 20, 2026
Revised October 22, 2026
Revised November 6, 2026 (added the YuhoLAB Connector)
Revised November 8, 2026 (added use of data and disclaimer)