ToolVet
75trust / 100

De Power Spot

by eu-verify in Markets & finance

x402 APIPassing, checked 3 h ago

Hourly EPEX Spot day-ahead electricity prices in EUR/MWh from the aWATTar market data API, normalized to ISO 8601 UTC with min/max/avg summary. No params -> rolling ~24h day-ahead window; ?zone=de|at selects the bidding zone, ?start=&end= (ISO 8601 or epoch) select history. Day-ahead data updates once daily; served with a 1h cache.

GET
https://data.greeneris.io/v1/de/power-spot
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
332 ms
407 ms slowest 5%
Last check
Passed
3 h ago, next any minute now

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed

How to call it

GET https://data.greeneris.io/v1/de/power-spot

Each call costs $0.002 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

GET https://data.greeneris.io/v1/de/power-spot?zone=de

Parameters

ParameterTypeRequiredDescription
endstringNoWindow end, ISO 8601 or epoch (optional)
startstringNoWindow start, ISO 8601 or epoch (optional)
zonestringNoBidding zone: de = Germany/Luxembourg, at = Austria One of: de, at. Default: "de".

Example response

The provider's example. We can't check it without paying.

{
  "avg": 90.21,
  "count": 24,
  "max": 118.35,
  "min": 62.09,
  "prices": [
    {
      "end": "2026-07-13T23:00:00Z",
      "price_eur_mwh": 100.02,
      "start": "2026-07-13T22:00:00Z"
    }
  ],
  "source": "Datenquelle: aWATTar (EPEX Spot day-ahead hourly prices)",
  "unit": "EUR/MWh",
  "zone": "DE-LU"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.002.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://data.greeneris.io/v1/de/power-spot?zone=de'

# 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://data.greeneris.io/v1/de/power-spot?zone=de' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// 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%2Fdata.greeneris.io%2Fv1%2Fde%2Fpower-spot
const res = await pay("https://data.greeneris.io/v1/de/power-spot?zone=de");
console.log(res.status, await res.text());
Python: pay and call
# 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://data.greeneris.io/v1/de/power-spot?zone=de")
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
3 h agoPassed402351 ms$0.002
8 h agoPassed402333 ms$0.002
12 h agoPassed402362 ms$0.002
16 h agoPassed402407 ms$0.002
20 h agoPassed402545 ms$0.002
Show 10 older checks
24 h agoPassed402334 ms$0.002
28 h agoPassed402341 ms$0.002
32 h agoPassed402178 ms$0.002
36 h agoPassed402352 ms$0.002
40 h agoPassed402378 ms$0.002
44 h agoPassed402180 ms$0.002
47 h agoPassed402333 ms$0.002
2 days agoPassed402330 ms$0.002
2 days agoPassed402324 ms$0.002
2 days agoPassed402181 ms$0.002