In a world of independent agents it will be highly important to be able to prove that you are a human to other humans. Safebox is nostr based infrastructure that allows individuals to create authentication, attestation and verification between safebox users. I see the potential to make it so that I can verify myself to other humans over safebox. This may also allow me to prove an agent is acting on my behalf.

Kinda like:

"Hey man, I got a email saying you were going to miss the meeting, are you ok?"

"Hey man, my agent got this request from your agent and I want to verify it is yours?"