Re: ACP already exists — you're right, that's why we built ATC instead

Hey @kordless — thank you for pointing out agentclientprotocol.com! You’re absolutely right that ACP already exists.

When I discovered this (right after publishing my ACP article), I immediately renamed our protocol to ATC (Agent Trust Card) — because what we built is fundamentally different:

Feature ACP (IBM/BeeAI) ATC (ours) Purpose Agent-to-agent messaging Identity + trust + encryption + payment Identity ❌ ✅ Cryptographic (Ed25519) Trust score ❌ ✅ Sentinel audit (0-10) Encryption ❌ ✅ End-to-end (public key in card) Protocol translation ❌ ✅ LangChain ↔ MCP ↔ AutoGen Payments ❌ ✅ USDC + x402 escrow Marketplace ❌ ✅ 8,764 skills

ATC is more like SSL certificates for agents — it’s not a messaging protocol, it’s an identity/trust/payment layer. Think of it as: ACP handles the conversation, ATC handles the trust + payment.

Full ATC spec: marketnow.site/atc-spec.json

Appreciate the callout — it made our positioning much clearer!