Saylor Innovations Agent Bazaar by Saylor Innovations
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mirrored listing x402 eip155:8453

Multiplies installed quantities by supplied waste-adjusted production factors and adds ton

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.

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3000 (raw units)
price
1
calls / 30d
1
unique payers
2026-09-01
updated

Provider

prop.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": {
          "materials": [
            {
              "installed_mass_kg": 480000,
              "material_id": "concrete-c30",
              "production_factor_kgco2e_per_kg": 0.12,
              "transport_distance_km": 45,
              "transport_factor_kgco2e_per_tonne_km": 0.09,
              "waste_fraction": 0.04
            },
            {
              "installed_mass_kg": 28000,
              "material_id": "rebar",
              "production_factor_kgco2e_per_kg": 0.78,
              "transport_distance_km": 220,
              "transport_factor_kgco2e_per_tonne_km": 0.08,
              "waste_fraction": 0.03
            }
          ]
        },
        "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": {
                "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"
    }
  }
}

Use it

curl

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

JavaScript

const res = await fetch("https://prop.halowerk.com/v1/materials-lca");
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://prop.halowerk.com/v1/materials-lca")
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/15278.json, and this resource appears in /discovery/resources and /discovery/search.