Purpose of use and use of data

What can I use the J-Quants API for?

J-Quants API is a service limited to private use by individuals. Use by corporations, distribution of data to third parties or provision of applications using the data by individuals is prohibited, regardless of whether it is for commercial/profit or non-profit. Please contact us regarding these uses.

What do you mean by commercial/profit use?

Commercial/profit purposes include external distribution of data distributed by J-Quants API, information distribution using the J-Quants API Data, or third-party distribution of applications and services using the J-Quants API Data.

What do you mean by private use?

Private use refers to use for one's own investment analysis, portfolio management, etc. Providing or distributing the results of investment analysis using this data to a third party or using this data for portfolio management or other services provided by a third party does not constitute private use. Please note, however, that the use of this data while it is available for viewing by third parties does not constitute private use.

Can I use J-Quants API data for blogs or SNS articles, etc.?

You are welcome to disclose the results of your analysis or your analytical methods.

However, please note that it is prohibited to distribute or share the data itself obtained by J-Quants API in a form that can be viewed.

Can I use J-Quatns API data to write my graduation thesis?

Students may use the library for academic purposes only to write their graduation theses. However, use by classes or groups of students in classes or seminars, use by faculty members for the purpose of teaching classes or providing guidance, and use by researchers for the purpose of writing papers or presenting papers at academic conferences are prohibited. Please contact us if you plan to use the library for these purposes.

Can I use the data after I cancel membership or my subscription?

J-Quants API is a data usage service, not a data sales service, so please delete the data you have acquired up to that point after cancelling membership or your subscription.

In the event of cancellation membership or your subscription, the data acquired up to that point will be handled in accordance with the Terms of Use. Any use of this data for purposes after cancellation of membership or subscription is prohibited.

After changing plans, is it possible to use the data from the previous plan?

J-Quants API is a data usage service, not a data sales service, so after changing plans, you will not be able to use the data you have previously acquired with a higher plan. Please delete the data acquired under the higher plan.