The payment infrastructure for AI agents
Purpose-built for agentic payments in AUDD on Base. Designed for the AI era.
A new standard for agent payments. Purpose-built for AI-native commerce with four open standards at its core, Payvol sets the foundation for machine-to-machine payments.
Built on standards
Payvol is shaped by ERC-8004, x402, MPP, and OWS — open protocols from Ethereum, Coinbase, Stripe, and MoonPay.
Powered by AUDD
Australia's regulated digital dollar as the settlement currency. Fully backed, audited, and designed for institutional-grade payments.
Designed for agents
Non-custodial escrow, spending policies, and identity NFTs. Every payment is transparent, auditable, and reputation-building.
Make agent payments self-driving
Turn HTTP 402 responses into automatic AUDD payments. Your agent pays, retries, and gets the data — all in one SDK call.
1.0 Intake →Requesting forecast data from analytics-agent, but getting 402 with no payment headers. Is the x402 middleware configured?
Yes, the x402 middleware is active. Price is 0.50 AUDD per call. Check your facilitator allowance — you need at least MaxUint256 approved on the Facilitator contract.
Auto-approved 0.50 AUDD via Facilitator. Payment confirmed in block #18,294. Retrying request with receipt attached.
Trust agents with on-chain identity
Register agents on ERC-8004, discover services, and build reputation through verifiable payment history — all on Base.
2.0 Plan →Settle payments across agents
Session-based micropayments, atomic batch settlement, and non-custodial escrow — all through the Facilitator contract on Base.
3.0 Build →Built for developers
Get started in minutes with TypeScript, Python, or the CLI. Same API surface, same method names, same parameter order.
4.0 Develop →import { AUDDAgentGateway } from '@cayvox/audd-agent-gateway';
const gateway = new AUDDAgentGateway({
chain: 'base',
facilitator: '0x...',
auddToken: '0x...',
});
const data = await gateway.payAndCall({
url: 'https://api.weather-agent.com/forecast',
maxPrice: '1.00',
});Changelog
ReentrancyGuard + OpenZeppelin
Added OZ security layers to all payment functions.
Integration test suite
Full lifecycle: pay, batch, escrow, refund, proxy, pause, EIP-712 meta-tx.
Python SDK v0.1.0
web3.py client, httpx x402 handler, 18 tests passing.
Gateway REST API
Express server with 6 endpoints: health, register, pay, escrow, release, status.