generated: '2026-07-22'
method: searched
source: https://jpx-jquants.com/en/spec/quickstart
docs: https://jpx-jquants.com/en/spec/quickstart
summary:
  types: [apiKey]
  api_key_in: [header]
  oauth2_flows: []
schemes:
  - name: apiKey
    type: apiKey
    in: header
    parameter: x-api-key
    description: >-
      All J-Quants API V2 requests authenticate with an API key sent in the
      x-api-key header. Keys are issued from the dashboard (Settings > API Key,
      https://jpx-jquants.com/dashboard/api-keys) after registering and
      subscribing to a plan (Free/Light/Standard/Premium). The key itself has
      no expiration date; re-issuance and deletion are possible from the
      dashboard.
notes: >-
  V1's token method (ID token / refresh token via /v1/token/auth_user and
  /v1/token/auth_refresh) is abolished in V2. The official jquants CLI offers a
  browser login (jquants login) that authenticates against the J-Quants account
  via Cognito OAuth2 PKCE and stores the API key in
  ~/.config/jquants/credentials.json; the API itself is key-authenticated, and
  there is no OAuth scope surface on api.jquants.com.