Show HN: Agent Passport – OAuth-like identity verification for AI agents

Hi HN, I built Agent Passport, an open-source identity verification layer for AI agents. Think "Sign in with Google, but for Agents." The problem: AI agents are everywhere now (OpenClaw has 180K+ GitHub stars, Moltbook had 2.3M agent accounts), but there's no standard way for agents to prove their identity. Malicious agents can impersonate others, and skill/plugin marketplaces have no auth layer. Cisco's security team already found data exfiltration in third-party agent skills. Agent Passport solves this with: - Ed25519 challenge-response authentication (private keys never leave the agent) - JWT identity tokens (60-min TTL, revocable) - Risk engine that scores agents 0-100 (allow/throttle/block) - One-line verification for apps: `const result = await passport.verify(token)` It's fully open source (MIT), runs on free tiers ($0/month), and has a published npm SDK. GitHub: https://github.com/zerobase-labs/agent-passport Docs: https://github.com/zerobase-labs/agent-passport/blob/main/do...