The Gatekeeper opening a liquid-violet portal to a Nuza GPU machine
AGENT PAYMENT PROFILE · LIVE

The machine door.

Software can quote, pay for, and open a private GPU sandbox without an account. USDC settles on Solana; every completed rental prints a public receipt.

Request payable quote →Read the protocol →
NETWORKSolana mainnet
ASSETUSDC
SCHEMEexact · x402 v2
ACCESSSSH / bearer capability
PAYABLE RESOURCES

Two endpoints. One real machine market.

The small quote payment proves the rail. The rental payment is the live machine deposit, priced from the same book humans see on the exchange.

02 · OPENlive deposit

POST /api/x402/rent

Pay the runtime deposit and receive a rental ID plus bearer capability. Poll until active, SSH in, then stop when the work is done.

{"sshPubkey":"ssh-ed25519 AAAA…","model":"rtx5090","seconds":3600}
THE RECEIPT PATH

Request → pay → enter → settle.

  1. Challenge.The resource answers 402 with the exact Solana USDC payment requirements.
  2. Payment.The agent signs and retries the same request with its payment payload.
  3. Machine.Nuza reserves the GPU, starts the isolated CUDA sandbox, and returns capability-scoped access.
  4. Receipt.Metered usage pays the host; unused deposit is forwarded back to the payer and the settlement lands on the public tape.

The settlement split is enforced on-chain. For x402 rentals, the unused-USDC refund leg is platform-signed and forwarded to the paying wallet; it is not program-enforced. Full payment notes →

DISCOVERY DOCUMENT

A stable profile for machines.

Crawlers can start at the well-known document, then inspect each live 402 response as the authority for price and payment requirements.

/.well-known/x402 →Public settlement tape →
{"version":1,"resources":["https://nuza.io/api/x402/quote","https://nuza.io/api/x402/rent"]}