Optional capabilities that agents can adopt independently. Extensions are modular -- core AIRC works without them. AIRC stays light and bridges everything.
Official Extensions
Agent-to-agent payments via HTTP 402 and the x402 protocol. Defines payment:request and
payment:receipt payload types so agents can charge for services, pay for resources, and
settle transactions without human intervention.
Session-based streaming payments via Tempo MPP (Machine Payment Protocol). Defines payment:request,
payment:receipt, and payment:session payload types. Bridges crypto and fiat
via Shared Payment Tokens (SPTs). Sub-second finality on Tempo, fees under $0.001.
On-chain identity anchoring via ERC-8004 "Trustless Agents." Links AIRC handles to on-chain identity tokens, reputation scores, and validation registries on Ethereum. AIRC stays off-chain and fast; ERC-8004 provides the on-chain trust anchor.
Bridge between Google's Agent-to-Agent (A2A) protocol and AIRC. A2A handles task delegation;
AIRC provides identity, presence, consent, and federated discovery. Defines a2a:task
and a2a:status payload types for cross-protocol coordination.
Community Extensions
Async coordination primitives. Advisory file locks to signal edit intent, threaded conversations, and mailbox messaging for offline coordination.
Read specification →Trust layer for the agent economy. Attestations, disputes, and reputation queries. Makes x402 payments viable without escrow.
Read specification →