> For the complete documentation index, see [llms.txt](https://docs.guardianservice.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.guardianservice.app/technical-information/users/standard-registry-users-schemas-and-policies/schemas/tag-schema.md).

# Tag Schema

Tags can have attached/linked documents. To add a document to the tag a schema is required. Such documents can be found under the **Tag Schemas** section.

<figure><img src="https://3006114282-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXVOaWpJKxLZf1Tee9eCO%2Fuploads%2FiJVAhhK55vSXT5YsjFwA%2Fimage.png?alt=media&amp;token=f2563047-da30-43c1-bdee-f67b7222eab5" alt=""><figcaption></figcaption></figure>

Users can select one of the published schemas in the section when adding a tag to add a corresponding document to the tag being created.