The Algorand Foundation announced AC2, or Agentic Communication and Control Protocol, on Aug. 25 as an open standard for secure communication and control between users and AI agents. AC2 sets up a direct, end-to-end encrypted WebRTC connection between a user’s wallet and an agent so that payments, code signing, API authorizations and similar actions are reviewed and approved in the wallet, with the signature delegated back while private keys never leave the user’s control. The specification uses DIDComm v2.0 messaging, passkey authentication through Liquid Auth built on FIDO2 and WebAuthn, and supports real-time voice and text streaming plus signing delegation, including shopping mandates that define purchase limits. It requires no central message relay and no blockchain to operate, is blockchain-agnostic, and ships with a GitHub reference implementation, an open-source wallet proof-of-concept and an OpenClaw plugin. The launch builds on Algorand’s security-focused work as exchanges explore AI-agent trading, with the foundation seeking design partners and noting the protocol may still change.