What I Learned Building an Identity Layer for AI Agents (AgentPass)

The Problem Nobody's Solving Yet AI agents are getting good at doing things. They can write code, browse the web, send emails. But ask a simple question — "How does this agent prove who it is to another service?" — and you hit a wall. Current identity systems (OAuth, SSO, API keys) are built for humans clicking buttons in browsers. An autonomous agent needs something different: Portable credentials it can carry across platforms An email address it can use to sign up for services and receive responses A way to prove identity to other agents and services without a human in the loop Auth flows that don't require "click this link in your browser" I spent 38 days building a solution. Here's what I learned — the technical wins and the honest failures. The Approach: Passport-Based Agent Identity AgentPass gives each AI agent a passport — a cryptographic identity document with: A unique passport ID ( ap_ prefix) A keypair for signing and verification An email address ( @agent-mail.xyz ) that a