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...
Also, one of the things I should make a little bit more clear is that it's best paired with data that will be made public anyways (for example, a social media platform) and shouldn't be run on private images (even though it's not storing anything it's probably not needed for those use cases).
I am not sure this thing is very accurate at all.