How to use APIs

Overall flow

• To use the service, subscriptions are required for each data. After the subscription contract is completed, you will be able to retrieve data via API, SFTP, and Snowflake.

• To use the API, please obtain a refresh token and ID token using the ID/password that will be provided after signing the contract.

• For details on how to use SFTP, please click here.

• For details on how to use Snowflake, please click here.

Step 1: Start using APIs (First time only)

1. Contact us ([e-mail]) regarding the use of J-Quants Pro.

2. We will send you an application form.

3. After we confirm the information, we will inform your account information.

Step 2: Get refresh token and ID token

ID token is required to retrieve data via the API, which can be obtained using a refresh token or ID/password. Please see below for instructions on how to obtain a refresh token or ID token using ID/password.

Refresh Token and ID token (/token/auth_user)

Refresh token is valid for 1 week, and ID token is valid for 24 hours.

After expiration, get each token again.

Step3: Use each API with ID token

Refer to the following page for the detailed specifications of each API.

API Specifications