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To utilize the Expense API, all requests need to be done on behalf of a user. The access token needs to be created based on a user. All Expense API requests must be made on behalf of a specific user. To do this, generate a user access token by following the User access token section in the Authentication guide. You will need the user_id of the user you want to impersonate. To find this, use the List users endpoint. Once you have the user access token, include it in the Authorization header of your Expense API requests to act as that user.
Last modified on August 31, 2026