来源: a2a-registry/browse Agent Card: https://creator-desk-x402-isolated.onrender.com/agents/machine-distribution/agent-card.json A2A: https://creator-desk-x402-isolated.onrender.com/a2a-business/machine-distribution Evidence-backed x402, MCP and A2A distribution service that audits machine discovery, repairs metadata and purchase-path gaps, submits eligible listings, and verifies public read-back.