API Keyin publisher.elixir.app/. Just register on our site and then click on the settings section.API Key in the API Keys tab.API Keysto authenticate requests. You can view and manage your API Keys in the API keys section.token header.2xxrange indicate success, in the 4xxrange indicate an error that failed given the information provided (usually a required parameter was omitted or incorrectly sent), in the 5xxrange indicate an error with Elixir servers.{ data: { ... } }{ data: object }{ success: false, message: 'Error details' }{ success: false, message: 'Error details' }{ success: false, message: 'Error details' }