```ruby
module Endpoints
  # The base class for all Sinatra-based endpoints. Use sparingly.
  class Base < Sinatra::Base
    register Pliny::Extensions::Instruments
    register Sinatra::Namespace

    helpers Pliny::Helpers::Encode
    helpers Pliny::Helpers::Params

    set :dump_errors, false
    set :raise_errors, true
    set :root, Config.root
    set :show_exceptions, false

    configure :development do
      register Sinatra::Reloader
      also_reload '../**/*.rb'
    end

    error Sinatra::NotFound do
      content_type :json
      status 404
      "{}"
    end

    error UniaraVirtualParser::InvalidLogin do
      content_type :json
      status 400
      '{"error": "Invalid Login" }'
    end

  end
end
```

Create a method to extract the auth token from the header
user
```ruby
module Endpoints
  # The base class for all Sinatra-based endpoints. Use sparingly.
  class Base < Sinatra::Base
    register Pliny::Extensions::Instruments
    register Sinatra::Namespace

    helpers Pliny::Helpers::Encode
    helpers Pliny::Helpers::Params

    set :dump_errors, false
    set :raise_errors, true
    set :root, Config.root
    set :show_exceptions, false

    configure :development do
      register Sinatra::Reloader
      also_reload '../**/*.rb'
    end

    error Sinatra::NotFound do
      content_type :json
      status 404
      "{}"
    end

    error UniaraVirtualParser::InvalidLogin do
      content_type :json
      status 400
      '{"error": "Invalid Login" }'
    end

    private

    def token
      request.env['HTTP_AUTHORIZATION']
    end

  end
end
```
assistant