Chatwoot/app/controllers/api/base_controller.rb

class Api::BaseController < ApplicationController
  include AccessTokenAuthHelper
  respond_to :json
  before_action :authenticate_access_token!, if: :authenticate_by_access_token?
  before_action :validate_bot_access_token!, if: :authenticate_by_access_token?
  before_action :authenticate_user!, unless: :authenticate_by_access_token?

  private

  def authenticate_by_access_token?
    request.headers[:api_access_token].present? || request.headers[:HTTP_API_ACCESS_TOKEN].present?
  end
end