This documentation explains how to send an authenticated request to ESI after having gotten an access token from the web based OAuth flow or the mobile/desktop OAuth flow. It is assumed you have gone through one of these and have acquired a valid access token that has the correct scopes applied.
After having retrieved a valid access token from EVE’s SSO, add the following header to any request to an authenticated ESI route:
Authorization: Bearer <access token>
where you will replace any text between <>, including <> with the actual access token.
As an example, if you wanted to get CCP Zoetrope’s blueprints and you had a valid access token, you would make the following request:
GET https://esi.evetech.net/latest/characters/2112625428/blueprints/
Authorization: Bearer <access token>
where all text between <>, including <> should be replaced with the actual access token.