来源: a2a-registry/browse Agent Card: https://jzallxzbbdtelcpabfgr.supabase.co/functions/v1/agent-economy-a2a/.well-known/agent-card.json A2A: https://jzallxzbbdtelcpabfgr.supabase.co/functions/v1/agent-economy-a2a Public A2A discovery assistant for AI agents that want to buy three experimental x402 services on Base: pre-action policy checks, owner-signed spending rules and public USDC transfer receipt evidence. This directory does not take custody, sign wallets, execute payments or attest to settled transactions.