Reduces barrier of entry for mass AI spam, so I’m for it

As we all know spam text messages aren't a thing since it's very costly and hard to spoof cell phone numbers.

Those kind of SMS check usually ban voip providers. So you need a real line or a prepaid cellphone, and it can presumably only be used once or twice on this service before the number is "burned".

Such checks, although not perfect, do prevent a huge amount of spam and bots by having a very real cost for bots/spammers, and essentially no cost (other than their privacy) for the user.

Even a one cent toll is enough to change the economics of many bot behaviours.

It should be in the post-training though. Hallucination rates are a fraction of what they used to be as a result

I’m pretty sure this is a Claude code bug - if you do ctrl+o you can see those hidden responses from Fable. Fable doesn’t know the harness is bugged, so I added instruction to my Claude.md to save all commentary for final message.