ToolVet
15trust / 100

Energy Pvwatts Solar Simulator

by SiteCheck Trade & Energy in Weather & location

x402 APIFailing, checked 5 h ago

NLR (formerly NREL) PVWatts v8 estimate for a grid-connected PV system at a latitude and longitude: annual AC energy (kWh), capacity factor, annual solar radiation, and monthly AC energy. Uses the NSRDB typical-year weather file; this is an estimate, not a yield guarantee.

GET
https://api.tradeenergy-api.workers.dev/api/energy/pvwatts-solar-simulator
Price
$0.002
per call in USDC
Uptime
0.0%
last 30 days
Response time
-
no timed checks yet
Last check
Failed
5 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Latest check failed 5 h ago: Amount "0.002" is not in atomic token units

Status and outage history · Atom feed · Watch with other listings

How to call it

GET https://api.tradeenergy-api.workers.dev/api/energy/pvwatts-solar-simulator

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://api.tradeenergy-api.workers.dev/api/energy/pvwatts-solar-simulator?azimuth=180&capacityKw=4&lat=40&lon=-105&tilt=40

Parameters

ParameterTypeRequiredDescription
azimuthstringNoAzimuth in degrees, 0 to 360 (180 = south; default 180)
capacityKwstringNoDC system size in kW, 0.05 to 1000 (default 4)
latstringYesLatitude, -90 to 90
lonstringYesLongitude, -180 to 180
tiltstringNoPanel tilt in degrees, 0 to 90 (default 20)

Example response

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

{
  "acAnnualKwh": 6700,
  "acMonthlyKwh": [
    513,
    529
  ],
  "azimuth": 180,
  "capacityFactorPct": 19.12,
  "capacityKw": 4,
  "checkedAt": "2026-10-23T09:38:22.632Z",
  "lat": 40,
  "location": {
    "country": "United States",
    "state": "Colorado",
    "weatherFile": "NSRDB PSM V3 GOES tmy-2020 3.2.0"
  },
  "lon": -105,
  "solradAnnualKwhPerM2PerDay": 5.99,
  "source": "https://developer.nlr.gov/api/pvwatts/v8.json",
  "tilt": 40
}

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://api.tradeenergy-api.workers.dev/api/energy/pvwatts-solar-simulator?azimuth=180&capacityKw=4&lat=40&lon=-105&tilt=40'

# 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/pvwatts-solar-simulator?azimuth=180&capacityKw=4&lat=40&lon=-105&tilt=40' \
  | 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%2Fapi.tradeenergy-api.workers.dev%2Fapi%2Fenergy%2Fpvwatts-solar-simulator
const res = await pay("https://api.tradeenergy-api.workers.dev/api/energy/pvwatts-solar-simulator?azimuth=180&capacityKw=4&lat=40&lon=-105&tilt=40");
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://api.tradeenergy-api.workers.dev/api/energy/pvwatts-solar-simulator?azimuth=180&capacityKw=4&lat=40&lon=-105&tilt=40")
    print(res.status_code, res.text)

Security scan

No findings

We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
5 h agoAmount "0.002" is not in atomic token units402905 ms$0.002
13 h agoAmount "0.002" is not in atomic token units402931 ms$0.002
22 h agoAmount "0.002" is not in atomic token units402110 ms$0.002
30 h agoAmount "0.002" is not in atomic token units40297 ms$0.002
38 h agoAmount "0.002" is not in atomic token units402238 ms$0.002
Show 10 older checks
46 h agoAmount "0.002" is not in atomic token units402119 ms$0.002
2 days agoAmount "0.002" is not in atomic token units40284 ms$0.002
3 days agoAmount "0.002" is not in atomic token units402108 ms$0.002
3 days agoAmount "0.002" is not in atomic token units40243 ms$0.002
3 days agoAmount "0.002" is not in atomic token units40236 ms$0.002
3 days agoAmount "0.002" is not in atomic token units4021.1 s$0.002
4 days agoAmount "0.002" is not in atomic token units402126 ms$0.002
4 days agoAmount "0.002" is not in atomic token units40291 ms$0.002
4 days agoAmount "0.002" is not in atomic token units40293 ms$0.002
5 days agoAmount "0.002" is not in atomic token units402115 ms$0.002