Account Management

Is there a fee to create an account?

Creating an account is free.

Why do I need to create an account?

An account is required to use the J-Quants API. After logging in with your created account, you will be able to retrieve sample data and purchase plans.

I forgot my password.

Please reset your password at the password reset page. If you signed up with Google, no password is required for either website login or data retrieval.

My account was automatically cancelled after one year of using a free plan. Will my account be deleted?

Free plans are automatically cancelled after one year, but your account will not be deleted.

I accidentally registered with a corporate email address. Can I delete my account?

You can withdraw by clicking 'Proceed with withdrawal' at the bottom of the Profile screen in your dashboard.

Can I change my email address?

You can change your email address from the Profile screen in the dashboard after signing in. However, changing from a Google-linked account to an email/password account is not supported by the system.

MFA (multi-factor authentication) is required. Can I disable it?

MFA cannot be disabled as it is required for security. Please note the following:
By default, Email OTP is configured — a 6-digit code is automatically sent to your registered email address at login
Email subject: 「【J-Quants API】多要素認証コードのご案内 / Your Multi-Factor Authentication Code」
Sender: no-reply@jpx-jquants.com
To switch to an authenticator app (TOTP such as Google Authenticator), go to 'Multi-Factor Authentication (MFA) Settings' on the Profile screen in the dashboard

I'm not receiving the MFA authentication code by email.

Please check the following:
Check your spam/junk mail folder
Verify your email client and domain settings allow emails from no-reply@jpx-jquants.com
The authentication code expires after 10 minutes. If expired, use the 'Resend confirmation code' button on the login screen
Switching to an authenticator app (TOTP) avoids email delays (configurable from Profile screen » Multi-Factor Authentication (MFA) Settings)