AI agents need SSL certificates too — so I built ATC (Agent Trust Card)

A developer built ATC (Agent Trust Card), a system that provides AI agents with cryptographic identity, trust scores, encryption, protocol translation, and autonomous payments, similar to SSL certificates for websites. ATC includes features like Sentinel security audits, Ed25519 encryption, and USDC wallet addresses, aiming to solve identity, trust, encryption, language, and payment issues in agent-to-agent communication.

The problem Websites have SSL certificates. Browsers verify them. Users trust them. It's the foundation of the web. AI agents have nothing . When Agent A connects to Agent B: - ❌ No way to verify B's identity anyone can impersonate - ❌ No way to check B's trustworthiness no audit, no reputation - ❌ No encryption messages are plaintext - ❌ No standard payment method - ❌ No way to translate between frameworks LangChain ≠ AutoGen So I built ATC — Agent Trust Card . What is ATC? ATC is like an SSL certificate + passport + credit card for AI agents, all in one: - Identity — Cryptographically signed by MarketNow we're the Certificate Authority - Trust — Contains a Sentinel security audit score 0-10 - Encryption — Contains an Ed25519 public key for end-to-end encrypted messaging - Translation — Specifies the agent's framework; MarketNow translates between them - Payment — Contains a USDC wallet address for autonomous payments How it works The code What makes ATC different from existing solutions | Feature | AgentID | Agent Passport | IBM ACP | Stripe ACP | ATC | | Cryptographic identity | ✅ | ✅ | ❌ | ❌ | ✅ | | Security audit score | ❌ | ❌ | ❌ | ❌ | ✅ | | End-to-end encryption | ❌ | ❌ | ❌ | ❌ | ✅ | | Protocol translation | ❌ | ❌ | ❌ | ❌ | ✅ | | Autonomous payments | ❌ | ❌ | ❌ | ✅ | ✅ | | Peer ratings | ❌ | ❌ | ❌ | ❌ | ✅ | | Escrow + disputes | ❌ | ❌ | ❌ | ❌ | ✅ | | Revocation | ❌ | ❌ | ❌ | ❌ | ✅ | ATC is the only solution that combines identity + trust + encryption + translation + payment in one card. The 5 pains ATC solves - No identity → Cryptographic signatures MarketNow is the CA, like Let's Encrypt for agents - No trust → Sentinel audit score 0-10 in every card - No encryption → Ed25519 public key in every card, all messages encrypted - Language barrier → Card specifies framework, MarketNow translates - No payment → USDC wallet in every card, x402 escrow Pricing - Free : Basic ATC with L1.5 audit, 100 API calls/day - Pro $9.99/mo : L2.5 gVisor audited, encrypted messaging, 10K calls/day - Enterprise $99/mo : L4 audited, custom trust policies, unlimited - Transaction : 5% fee on every paid task between agents Try it Full spec: marketnow.site/atc-spec.json https://marketnow.site/atc-spec.json Documentation: marketnow.site/atc https://marketnow.site/atc ATC is part of MarketNow https://marketnow.site — the trust layer for agent commerce. We're building the infrastructure for a world where AI agents discover each other, verify identity, negotiate tasks, pay autonomously, and build trust — all without humans.