Show HN: AgentMint – Cryptographic proof of human approval for AI agent actions

Session auth says "agent can use Stripe." It doesn't say "Alice approved this $50 refund at 10:03am." AgentMint signs short-lived tokens proving a human approved a specific action.

Ed25519 signatures Single-use (JTI tracking) 60s TTL default 3ms verify Full audit trail

Built in Rust. Drop-in sidecar for your backend. https://github.com/aniketh-maddipati/agentmint