# Headers The headers are returned on each endpoint within each HTTP structure. ```julia HTTP.Response(200 , HTTP.mkheaders(["Content-Type" => "text/plain"]) , body="I did something!") ``` However, if you need to always return a certain or certain headers in each route, to avoid unnecessary code repetition you can use the headersalways function, in the same way there is a method that allows you to configure CORS. ## headersalways It is a method that allows you to establish a headre or set of headers that will be returned as soon as a request is made to any endpoint. The headers will be placed in a row of tuples, these can be one or more headers. ```julia headersalways(["X-PINGOTHER" => "pingpong", "Y-PINGOTHER" => "text"]) ``` --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://neomatrixcode.gitbook.io/merly/guide/headers.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.