Building Heat Demand

Last 30 days

Uptime

100%

Response time

112 ms typical, 112 ms slowest 5%

Last check

2 h ago

Next check

any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://solar.halowerk.com/building-heat-demand" \
  -H "content-type: application/json" \
  -d '{"domestic_hot_water_kwh_year":1800,"envelope":[{"area_m2":168,"name":"external walls","u_value_w_m2k":0.22},{"area_m2":118,"name":"roof","u_value_w_m2k":0.16},{"area_m2":92,"name":"ground floor","u_value_w_m2k":0.25},{"area_m2":31,"name":"windows","u_value_w_m2k":0.95}],"heated_floor_area_m2":145,"heated_volume_m3":365,"lat":52.52,"lon":13.405,"max_station_distance_km":70,"profile":{"heating_base_temp_c":15,"indoor_temp_c":20,"internal_gains_w":350},"system_efficiency":0.92,"ventilation":{"air_changes_per_hour":0.45,"heat_recovery_efficiency":0.15}}'

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 $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fsolar.halowerk.com%2Fbuilding-heat-demand
const res = await pay("https://solar.halowerk.com/building-heat-demand", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"domestic_hot_water_kwh_year":1800,"envelope":[{"area_m2":168,"name":"external walls","u_value_w_m2k":0.22},{"area_m2":118,"name":"roof","u_value_w_m2k":0.16},{"area_m2":92,"name":"ground floor","u_value_w_m2k":0.25},{"area_m2":31,"name":"windows","u_value_w_m2k":0.95}],"heated_floor_area_m2":145,"heated_volume_m3":365,"lat":52.52,"lon":13.405,"max_station_distance_km":70,"profile":{"heating_base_temp_c":15,"indoor_temp_c":20,"internal_gains_w":350},"system_efficiency":0.92,"ventilation":{"air_changes_per_hour":0.45,"heat_recovery_efficiency":0.15}}),
});
console.log(await res.json());

Example input

{
  "domestic_hot_water_kwh_year": 1800,
  "envelope": [
    {
      "area_m2": 168,
      "name": "external walls",
      "u_value_w_m2k": 0.22
    },
    {
      "area_m2": 118,
      "name": "roof",
      "u_value_w_m2k": 0.16
    },
    {
      "area_m2": 92,
      "name": "ground floor",
      "u_value_w_m2k": 0.25
    },
    {
      "area_m2": 31,
      "name": "windows",
      "u_value_w_m2k": 0.95
    }
  ],
  "heated_floor_area_m2": 145,
  "heated_volume_m3": 365,
  "lat": 52.52,
  "lon": 13.405,
  "max_station_distance_km": 70,
  "profile": {
    "heating_base_temp_c": 15,
    "indoor_temp_c": 20,
    "internal_gains_w": 350
  },
  "system_efficiency": 0.92,
  "ventilation": {
    "air_changes_per_hour": 0.45,
    "heat_recovery_efficiency": 0.15
  }
}

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