Energy Biofuel Rin Credits Epa

{
  "checkedAt": "2026-10-23T09:38:30.815Z",
  "columns": [
    "Transfer Date by Week",
    "Transfer Year"
  ],
  "matched": 410,
  "report": "prices",
  "results": [
    {
      "dCode": "D6",
      "priceUSD": 2.02,
      "qapType": "Unverified",
      "rinYear": 2024,
      "transferYear": 2026,
      "week": "2026-09-21"
    },
    {
      "dCode": "D6",
      "priceUSD": 1.18,
      "qapType": "Q-RIN",
      "rinYear": 2025,
      "transferYear": 2026,
      "week": "2026-09-21"
    }
  ],
  "source": "https://www.epa.gov/fuels-registration-reporting-and-compliance-help/rin-trades-and-price-information",
  "totalRowsInEpaTable": 8643
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.tradeenergy-api.workers.dev/api/energy/biofuel-rin-credits-epa?dCode=D6&limit=5&report=prices'

# 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://api.tradeenergy-api.workers.dev/api/energy/biofuel-rin-credits-epa?dCode=D6&limit=5&report=prices' \
  | 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 $0.002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.002" });
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 $0.002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.tradeenergy-api.workers.dev%2Fapi%2Fenergy%2Fbiofuel-rin-credits-epa
const res = await pay("https://api.tradeenergy-api.workers.dev/api/energy/biofuel-rin-credits-epa?dCode=D6&limit=5&report=prices");
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 $0.002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.002"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.tradeenergy-api.workers.dev/api/energy/biofuel-rin-credits-epa?dCode=D6&limit=5&report=prices")
    print(res.status_code, res.text)