Authenticating with External Auth

A way of exchanging an external auth token (such as PSN, XBOX) for an Epic Games access token Not very useful as of now due to not having the PSN/XBOX/Switch Fortnite clients

Method

• Send a POST request to https://account-public-service-prod.ol.epicgames.com/account/api/oauth/token:
  Required headers:

  • Content-Type: application/x-www-form-urlencoded
  • Authorization: basic clientId:secret (encoded in Base64, list of clients here)

  Body:

  • grant_type: external_auth
  • external_auth_type: ...
  • external_auth_token: ...
  • nonce?: ...

Parameters

• external_auth_type: an external auth type
  • epicgames_access_token: used with Epic Online Services
  • wegame - used for Fortnite China
  • psn
  • nintendo
  • xbl
  • google
  • facebook
  • internal
• external_auth_token: external auth token, probably issued by PSN/XBL/whatever service provider (not too sure)