Emission Factor

Last 30 days

Uptime

100%

Response time

112 ms typical, 112 ms slowest 5%

Last check

4 h ago

Next check

any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://klima.halowerk.com/v1/emission-factor" \
  -H "content-type: application/json" \
  -d '{"activity":"diesel","factors":[{"activity":"diesel","factor":1,"region":"GB","scope":"WTW","unit":"kgCO2e/unit"}],"region":"GB","source":{"published_at":"2026-06-10T00:00:00Z","title":"UK 2026 conversion factors","url":"https://www.gov.uk/government/publications/greenhouse-gas-reporting-conversion-factors-2026"}}'

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.03:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fklima.halowerk.com%2Fv1%2Femission-factor
const res = await pay("https://klima.halowerk.com/v1/emission-factor", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"activity":"diesel","factors":[{"activity":"diesel","factor":1,"region":"GB","scope":"WTW","unit":"kgCO2e/unit"}],"region":"GB","source":{"published_at":"2026-06-10T00:00:00Z","title":"UK 2026 conversion factors","url":"https://www.gov.uk/government/publications/greenhouse-gas-reporting-conversion-factors-2026"}}),
});
console.log(await res.json());

Example input

{
  "activity": "diesel",
  "factors": [
    {
      "activity": "diesel",
      "factor": 1,
      "region": "GB",
      "scope": "WTW",
      "unit": "kgCO2e/unit"
    }
  ],
  "region": "GB",
  "source": {
    "published_at": "2026-06-10T00:00:00Z",
    "title": "UK 2026 conversion factors",
    "url": "https://www.gov.uk/government/publications/greenhouse-gas-reporting-conversion-factors-2026"
  }
}

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