Referring to this German AI4Good Codex can be done as reference with or without audit.

Without audit the AI provider claims to follow ther German AI4Good Codex, but mentions that there is has not been an audit. Using the Germain AI4Good Codex without Audit requires a fee related to the AIproviders size. An additional Audit will be conducted by addtional expenses. Both shown in "Fees for Codex".