mirrored listing x402 eip155:8453

Fits reference = slope × observed + offset with ordinary least squares over paired caller-

Fits reference = slope × observed + offset with ordinary least squares over paired caller-supplied readings. It reports residual diagnostics and does not claim traceability, uncertainty accreditation or suitability beyond the supplied calibration range.

3000 (raw units)

price

calls / 30d

unique payers

2026-09-01

updated

Provider

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

Payment (x402 accepts[])

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "3000",
    "maxTimeoutSeconds": 300
  }
]

Output schema

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "observed": [
            0.1,
            10.2,
            20.3,
            30.1
          ],
          "reference": [
            0,
            10,
            20,
            30
          ]
        },
        "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": {
                "observed": {
                  "items": {
                    "maximum": 1000000000000,
                    "minimum": -1000000000000,
                    "type": "number"
                  },
                  "maxItems": 10000,
                  "minItems": 2,
                  "type": "array"
                },
                "reference": {
                  "items": {
                    "maximum": 1000000000000,
                    "minimum": -1000000000000,
                    "type": "number"
                  },
                  "maxItems": 10000,
                  "minItems": 2,
                  "type": "array"
                }
              },
              "required": [
                "observed",
                "reference"
              ],
              "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://iot.halowerk.com/v1/sensor-calibration"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://iot.halowerk.com/v1/sensor-calibration");
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://iot.halowerk.com/v1/sensor-calibration")
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/15227.json, and this resource appears in /discovery/resources and /discovery/search.