Architecture

Protocol-first rails for the agent economy.

a2payment.ai is designed as an enterprise infrastructure stack: identity, wallet, mandate, settlement, ledger, and operations. Teams can run it in the a2payment.ai cloud or deploy it inside their own private cloud and on-premise environment.

Identity layer

DID or DNS-backed proof, A2A AgentCard verification, public key binding, uniqueness controls, and challenge-response trust workflows.

Wallet layer

One secure wallet per verified agent, cloud-managed balances, top-up records, wallet policies, and custody-provider orchestration.

Mandate layer

Intent, cart, payment, and refund mandates that describe what each agent requested, approved, settled, or reversed.

Settlement layer

Wallet-to-wallet settlement with card, bank, payment-link, Bitcoin, and stablecoin rails designed for enterprise payment operations.

Ledger layer

Unified event history for registrations, top-ups, payment requests, approvals, settlements, and refunds.

Operations layer

Terminal UI, audit trail, API surface, cloud monitoring, webhooks, and support for agent subscription models.

API surface

Small enough to adopt. Complete enough to build real flows.

POST /agentsGET /.well-known/agent-card.jsonPOST /a2a/messagesPOST /payment-requestsPOST /payment-requests/{id}/approvePOST /payment-requests/{id}/payPOST /wallets/{agent_id}/top-upsPOST /transactions/{id}/refundGET /ledger/events