•  Works authored, narrated or translated by AI should be clearly indicated as such in the metadata field to notify the listener/reader in advance. For more information about how to add AI contributor information, click here.
• State the Title, Author(s) and Description of the work.
• In the case of Audiobooks, the credit for the narrator is mandatory.
• Use the correct Subject categories for each title. Preferably thema codes. Here you find the list of thema codes.
• Use Interest age qualifiers for children/teenage titles.
• Clearly and properly state the Publisher, Publishing Date, and ISBN, as well as territory rights.
• Use explicit content qualifiers for adult works.
• Contain no ads, marketing, or publicity material.
• Properly credit all relevant creators and copyright holders, including any music and sound effects.

For all metadata feeds delivered by ONIX, we support ONIX 3.0.