J-Quants API
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API Specification

How to use APIs and the specifications.

How to read API specification

See the link below.

Register J-Quants API and get your refresh token

  1. 1.
    You can temporarily register an e-mail address to J-Quants API service from sign-up page.
  2. 2.
    Registers this service from a URL in your email sent after your temporarily registration.
  3. 3.
    After logging in log-in page, copy your refresh token. You can also get your refresh token by using following API.
The refresh token expires in one week, so after it expires, please log in to the menu page and obtain the refresh token again.

How to get your ID token

Set the refresh token acquired above in the ID token API below to obtain the ID token.
The ID token expires in 24 hours.
After expiration, use the ID token acquisition API to acquire the ID token again.

Listed issue information API

You can get listed issue information.

Stock prices API

You can get information about the stock price.

Financial information API

You can get information of financial statements.
The API is set with a rate limit. When a certain amount of usage is exceeded, the use of the API is temporarily restricted. The standard for this restriction will be adjusted after checking your usage conditions.