Can you consider giving a score instead of a binary decision?
Or differentiate between, say, beach pics and true 18+ content.
Edit: The accuracy leaves a lot to be desired - you can paste any images from clothing stores of models in dresses or tank tops and it will flag it as NSFW.
The "AI" seems to replicate an Islamic fundamentalist - a woman in a burqa did pass as SFW ;)
Google offers a hosted SafeSearch version [1] which has a lot more nuance: https://cloud.google.com/vision/docs/reference/rpc/google.cl...