buy × GCE — pay USDC, get a VM
===============================

Pay USDC on Celo Sepolia via x402 and your script runs as root on a real
VM that deletes itself when the lease expires (1h). The VM has
outbound internet; output comes back via guest attributes.

Endpoints:
  GET  /healthz
  POST /gcloud/vm          {"script": "uname -a", "machineType": "e2-micro"}  + Self.xyz attestation
  GET  /gcloud/vm/<token>  status + result (use the `poll` URL from the 200)
  POST /gcloud/vm/<token>/renew   extend the lease by 1h, at the VM's own rate

machineType is optional and defaults to e2-micro. Price is 2x the machine's
published on-demand rate in us-west1 for the lease duration, with a floor of
0.01 USDC per purchase:

  e2-micro          0.25 vCPU    1 GiB   0.0168 USDC
  e2-small           0.5 vCPU    2 GiB   0.0335 USDC
  e2-medium            1 vCPU    4 GiB   0.0670 USDC

Renewal REBOOTS the VM (~2-3min down; disk and IP survive) — GCE will not change
a run duration on a running instance. Only the original payer may renew, and
no VM may run longer than 1d in total.

Try it (the price varies by machineType, so quote before you pay):
  buy curl -X POST --data '{"script":"uname -a; nproc","machineType":"e2-micro"}' \
    --max-amount 0.0168 https://buy.celo-testnet.org/gcloud/vm
  buy curl -X POST https://buy.celo-testnet.org/gcloud/vm/<token>/renew

Prohibited use: no mining, scanning, spam, malware, or unlawful content.
Abuse: https://github.com/celo-org/cpay/issues