| Accept-Response | Amplifies the response body of a requested resource, with all it's related resources. <br> <a href="https://prime.gelato.io/docs/versions/429917739600053454/advanced-response-injector">more info</a> | Advanced |
| Accept-Language | Injects a selected language into the response body (changes the language)<br><a href="https://prime.gelato.io/docs/versions/429917739600053454/multi-language-support">more info</a> | en-US <br> bg-BG <br> tr-Tr <br> fi-Fi |
| AH-Impersonate | Administrator impersonates user which allows him to retrieve user's data and see the API endpoints as the selected user. Only administrators could use the "impersonate" header and should specify the user's ID as a value.<br><a href="https://prime.gelato.io/docs/versions/429917739600053454/multi-language-support">more info</a> | user_id |
