Index

{
  "assumptions": {
    "gpu_board_kw": {
      "B200": 1,
      "H100": 0.7
    },
    "pue": 1.3
  },
  "cheapest_region": "ERCOT-West",
  "gpu_spot_avg_per_hr": {
    "A100": 2.12,
    "H100": 2.46,
    "H200": 2.05
  },
  "priciest_region": "CAISO-NP15",
  "regions": [
    {
      "basis_vs_avg_per_H100_hr": -0.00767,
      "energy_cost_per_gpu_hr": {
        "B200": 0.01872,
        "H100": 0.0131
      },
      "energy_share_of_spot_pct": {
        "H100": 0.53
      },
      "grid_stress": "HIGH",
      "market": "ERCOT",
      "region": "ERCOT-West",
      "rt_mwh": 14.4
    }
  ],
  "signal": "WIDE_BASIS",
  "spread_per_1000_gpu_cluster_month_usd": 13702,
  "spread_per_H100_hr": 0.01877,
  "summary": "Cheapest power for compute right now: ERCOT-West at $14.4/MWh ($0.0131/H100-hr in energy); priciest: CAISO-NP15 at $35.02/MWh. Spread = $0.01877/H100-hr, about $13,702/month for a 1,000-GPU cluster."
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://computeindex.lonestaroracle.xyz/index'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://computeindex.lonestaroracle.xyz/index' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.1 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.1" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.1 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fcomputeindex.lonestaroracle.xyz%2Findex
const res = await pay("https://computeindex.lonestaroracle.xyz/index");
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.1 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.1"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://computeindex.lonestaroracle.xyz/index")
    print(res.status_code, res.text)