Api Endpoint

prop.halowerk.com

Multiplies installed quantities by supplied waste-adjusted production factors and adds tonne-kilometre transport factors. It reports a transparent partial embodied-carbon inventory only; it does not supply verified EPD data, include use/end-of-life stages unless represented by inputs, compare functional equivalence or constitute a certified life-cycle assessment.

Open interactive test console

Offering

Provider
prop.halowerk.com
Method
POST
Offering type
Api Endpoint
Transport type
http
Category
Weather And Environment
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://prop.halowerk.com/v1/materials-lca
MIME type
Not provided
First seen
2026-10-16T01:58:26.121Z
Last seen
Tags
None supplied

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.003 USDC
Atomic price: 3000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "3000",
    "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E"
  }
]

Observed health

Status
Healthy
Latest latency
316 ms
Average latency
946 ms
HTTP status
204
Last checked
Reachability
100% over 9 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "additionalProperties": false,
  "properties": {
    "body": {
      "additionalProperties": false,
      "properties": {
        "materials": {
          "items": {
            "additionalProperties": false,
            "properties": {
              "installed_mass_kg": {
                "maximum": 1000000000000000,
                "minimum": 0,
                "type": "number"
              },
              "material_id": {
                "maxLength": 128,
                "minLength": 1,
                "type": "string"
              },
              "production_factor_kgco2e_per_kg": {
                "maximum": 1000000,
                "minimum": -1000000,
                "type": "number"
              },
              "transport_distance_km": {
                "maximum": 10000000,
                "minimum": 0,
                "type": "number"
              },
              "transport_factor_kgco2e_per_tonne_km": {
                "maximum": 1000000,
                "minimum": 0,
                "type": "number"
              },
              "waste_fraction": {
                "maximum": 0.99,
                "minimum": 0,
                "type": "number"
              }
            },
            "required": [
              "material_id",
              "installed_mass_kg",
              "waste_fraction",
              "production_factor_kgco2e_per_kg",
              "transport_distance_km",
              "transport_factor_kgco2e_per_tonne_km"
            ],
            "type": "object"
          },
          "maxItems": 10000,
          "minItems": 1,
          "type": "array"
        }
      },
      "required": [
        "materials"
      ],
      "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"
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "additionalProperties": false,
          "properties": {
            "materials": {
              "items": {
                "additionalProperties": false,
                "properties": {
                  "installed_mass_kg": {
                    "maximum": 1000000000000000,
                    "minimum": 0,
                    "type": "number"
                  },
                  "material_id": {
                    "maxLength": 128,
                    "minLength": 1,
                    "type": "string"
                  },
                  "production_factor_kgco2e_per_kg": {
                    "maximum": 1000000,
                    "minimum": -1000000,
                    "type": "number"
                  },
                  "transport_distance_km": {
                    "maximum": 10000000,
                    "minimum": 0,
                    "type": "number"
                  },
                  "transport_factor_kgco2e_per_tonne_km": {
                    "maximum": 1000000,
                    "minimum": 0,
                    "type": "number"
                  },
                  "waste_fraction": {
                    "maximum": 0.99,
                    "minimum": 0,
                    "type": "number"
                  }
                },
                "required": [
                  "material_id",
                  "installed_mass_kg",
                  "waste_fraction",
                  "production_factor_kgco2e_per_kg",
                  "transport_distance_km",
                  "transport_factor_kgco2e_per_tonne_km"
                ],
                "type": "object"
              },
              "maxItems": 10000,
              "minItems": 1,
              "type": "array"
            }
          },
          "required": [
            "materials"
          ],
          "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"
}