ToolVet
80trust / 100

Autonomy Forecast

by solar.halowerk.com in Weather & location

x402 APIPassing, checked 3 h ago

Daily energy balance and straight run-down from the figures supplied. Solar input is caller data in watt-hours per day; nothing is fetched and no weather is assumed. Time to empty means time to the reserve floor, not to zero. Idle draw and conversion efficiency apply to AC loads only. Ageing, temperature and Peukert behaviour are not modelled, which matters for lead acid far more than for LiFePO4.

POST
https://solar.halowerk.com/autonomy-forecast
Price
$0.003
per call in USDC
Uptime
100%
last 30 days
Response time
105 ms
187 ms slowest 5%
Last check
Passed
3 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

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

How to call it

POST https://solar.halowerk.com/autonomy-forecast

Each call costs $0.003 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.

POST https://solar.halowerk.com/autonomy-forecast
content-type: application/json

{
  "battery": {
    "capacity_wh": 2400,
    "reserve_soc_percent": 20,
    "soc_percent": 80
  },
  "daily_solar_input_wh": 300,
  "loads": [
    {
      "dc": true,
      "hours_per_day": 24,
      "name": "router",
      "watts": 10
    }
  ]
}

Parameters

ParameterTypeRequiredDescription
batteryobjectYes
daily_solar_input_whnumberNoExpected harvest per day. Default: 0.
inverterobjectNo
loadsarray of objectYes

Example response

The listing has no example response.

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.003.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://solar.halowerk.com/autonomy-forecast' \
  -H 'content-type: application/json' \
  --data-raw '{"battery":{"capacity_wh":2400,"reserve_soc_percent":20,"soc_percent":80},"daily_solar_input_wh":300,"loads":[{"dc":true,"hours_per_day":24,"name":"router","watts":10}]}'

# 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 - -X POST 'https://solar.halowerk.com/autonomy-forecast' \
  -H 'content-type: application/json' \
  --data-raw '{"battery":{"capacity_wh":2400,"reserve_soc_percent":20,"soc_percent":80},"daily_solar_input_wh":300,"loads":[{"dc":true,"hours_per_day":24,"name":"router","watts":10}]}' \
  | 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 $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
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 $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fsolar.halowerk.com%2Fautonomy-forecast&method=POST
const res = await pay("https://solar.halowerk.com/autonomy-forecast", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "battery": {
      "capacity_wh": 2400,
      "reserve_soc_percent": 20,
      "soc_percent": 80
    },
    "daily_solar_input_wh": 300,
    "loads": [
      {
        "dc": true,
        "hours_per_day": 24,
        "name": "router",
        "watts": 10
      }
    ]
  }),
});
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 $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://solar.halowerk.com/autonomy-forecast",
        json={
            "battery": {
                "capacity_wh": 2400,
                "reserve_soc_percent": 20,
                "soc_percent": 80,
            },
            "daily_solar_input_wh": 300,
            "loads": [
                {
                    "dc": True,
                    "hours_per_day": 24,
                    "name": "router",
                    "watts": 10,
                },
            ],
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
3 h agoPassed402101 ms$0.003
6 h agoPassed402139 ms$0.003
9 h agoPassed40299 ms$0.003
12 h agoPassed402174 ms$0.003
15 h agoPassed40297 ms$0.003
Show 10 older checks
18 h agoPassed402104 ms$0.003
22 h agoPassed402102 ms$0.003
25 h agoPassed402136 ms$0.003
30 h agoPassed402102 ms$0.003
35 h agoPassed402134 ms$0.003
40 h agoPassed40299 ms$0.003
45 h agoPassed402141 ms$0.003
2 days agoPassed402112 ms$0.003
2 days agoPassed402101 ms$0.003
3 days agoPassed402110 ms$0.003