mirrored listing x402 eip155:8453

Queries the Sensor

Queries the Sensor.Community live area feed, keeps the newest noise reading per outdoor sensor within the requested radius, and returns nearest readings plus median, p10 and p90 LAeq. It never converts missing sensors into an estimated dB value. Community sensors are indicative rather than calibrated regulatory measurements; no day/night legal limit or property valuation is inferred.

6000 (raw units)

price

calls / 30d

unique payers

2026-09-14

updated

Provider

natur.halowerk.com · discovered, not yet claimed by its owner

Payment (x402 accepts[])

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "6000",
    "maxTimeoutSeconds": 300
  }
]

Output schema

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "latitude": 52.52,
          "longitude": 13.405,
          "max_sensors": 10,
          "radius_km": 10
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "body": {
              "additionalProperties": false,
              "properties": {
                "latitude": {
                  "maximum": 90,
                  "minimum": -90,
                  "type": "number"
                },
                "longitude": {
                  "maximum": 180,
                  "minimum": -180,
                  "type": "number"
                },
                "max_sensors": {
                  "default": 10,
                  "maximum": 30,
                  "minimum": 1,
                  "type": "integer"
                },
                "radius_km": {
                  "default": 5,
                  "maximum": 25,
                  "minimum": 0.5,
                  "type": "number"
                }
              },
              "required": [
                "latitude",
                "longitude"
              ],
              "type": "object"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

Use it

curl

curl "https://natur.halowerk.com/v1/noise-level"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://natur.halowerk.com/v1/noise-level");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://natur.halowerk.com/v1/noise-level")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Machine-readable

Everything on this page is also available as clean JSON at /resources/15299.json, and this resource appears in /discovery/resources and /discovery/search.