About the Service

What can the J-Quants API service do?

J-Quants API is a service that allows users to obtain financial data such as historical stock prices (OHLC), trading volume, and Company earnings via API. It aims to make it easier for individuals to obtain well-formatted financial data. J-Quants API democratizes financial data, providing individuals with the same data sets as institutional investors.

What kind of data is provided by the J-Quants API?

Click the link below to see the data currently offered.

pageAPI Specifications

Is it possible to get data in CSV instead of API?

We do not offer such file format from the J-Quants API.

How long is the refresh token valid?

The refresh token expires in one week, so after it expires, please log in to the menu page and obtain the refresh token again. You can also get your refresh token by refresh token API. See below for how to update the refresh token

pageRefresh Token (/token/auth_user)

How long is the ID token valid?

The ID token is valid for 24 hours. See below for how to update the ID token.

pageID Token (/token/auth_refresh)

Does it incur J-Quants API beta-version usage fees?

This is a free service for now.