The following types of content are unconditionally prohibited:
- Criminal or illegal content
- Explicit underage sexual content
- Bigotry or hateful content
- Violations of UTAU's Usage Policy
- Content created for erotic purposes using any character under 18 years old
Additionally, the use of any voicebank's character, contents, image, or any combination of the three with any form of AI is prohibited without permission. This includes, but is not limited to: in AI voice creation, text-to-speech programs, AI-generated images, as part of a dataset, etc. This also applies to any work created using a voicebank's contents, such as a vocal track created using UTAU.
Involving any voicebank's character, contents, image, or any combination of the three with any form of blockchain or non-fungible token (NFT) is prohibited.
Overt or heavily political content is prohibited. Overt or heavily religious content is prohibited. Music featuring these topics as themes to serve an artistic purpose are permitted, for example: "Lose Your Head" and "Collared" by Vane, "Aura" and "Honey I'm Home" by Ghost, "Propaganda!" by Crusher, etc.