Official fuel-economy lookup for US light-duty vehicles back to 1984: city, highway, and combined MPG, fuel type, estimated annual fuel cost, tailpipe CO2 grams per mile, and greenhouse-gas score — by year/make/model, VIN, or exact variant id. Sibling engine/transmission variants are listed so agents can price the exact configuration. For cost-of-ownership, shopping, and fleet agents.
POST https://x402.forgemesh.io/vehicle-fuel-economyListed in 3 directories: bazaar, x402-list, x402-new. First seen 5 Sept 2026.
Call this service
The endpoint answers an unpaid request with an HTTP 402 and a payment challenge. @x402/fetch signs it, pays in USDC, and retries — you get the result back in one call.
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const pay = wrapFetchWithPayment(fetch, account);
const res = await pay("https://x402.forgemesh.io/vehicle-fuel-economy", {
method: "POST",
headers: { "content-type": "application/json" },
body: JSON.stringify({ /* see the 402 challenge for the shape */ }),
});
console.log(await res.json());More from x402.forgemesh.io
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Uptime and compliance: x402-list.com (CC BY 4.0). Safety scores: x402.direct. Call and payer counts: x402.new. AMNT indexes this endpoint and does not host, operate or vouch for it.