> For the complete documentation index, see [llms.txt](https://doc.wearepatchworks.com/product-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.wearepatchworks.com/product-documentation/api-reference/getting-started/using-the-patchworks-core-api/common-headers.md).

# Common headers

## Content-type & accept

All requests, unless stated otherwise, should include the `Content-Type` and `Accept` headers, both set to `application/json`. Failure to include these may result in incorrectly formatted responses.