...ACG keeps one canonical commerce pipeline for validation, pricing, authorization, replay protection, settlement, backend execution, and receipts. Protocols and payment rails are handled through adapters, so MCP, A2A, ACP, UCP, x402, MPP, AP2, and future standards can evolve without changing the merchant’s core business logic. Businesses can expose APIs, datasets, reports, compute, and other digital capabilities as agent-accessible products while keeping control of their backend, infrastructure, pricing, and settlement destination. The gateway is self-hosted, non-custodial, and open source. ...