colesouth
Sounds like there is maybe some code debt involved!
You might want to contact the devs behind PromptPal (https://github.com/PromptPal/PromptPal), they seem to be some of the more technically advanced and fast moving people building in this area... maybe they can hack something together for you.
AIPRM is one of the more popular prompt managers, but as of May they don't have a public API (https://forum.aiprm.com/t/use-aiprm-prompt-templates-api/382...).
In general I would say it is safer than an FBA or FBM offer, but not totally safe.
Vendor accounts are highly sought after by black-hatters because:
1. It's much harder to track down shenanigans you run on them (since as you said the only public seller info is "Amazon") 2. They generally have higher authority for editing listings, so if you want to change a competitor's images it's more likely to stick from a vendor account