Multiplies installed quantities by supplied waste-adjusted production factors an
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.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
882 msmedian answer time
$0.003listed price per call
$0.003price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://prop.halowerk.com/v1/materials-lca
| Category | Everything else |
|---|---|
| Provider host | prop.halowerk.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.003 | 882 ms |
Example input (from the provider)
{
"body": {
"materials": [
{
"installed_mass_kg": 480000,
"material_id": "concrete-c30",
"production_factor_kgco2e_per_kg": 0.12,
"transport_distance_km": 45,
"transport_factor_kgco2e_per_tonne_km": 0.09,
"waste_fraction": 0.04
},
{
"installed_mass_kg": 28000,
"material_id": "rebar",
"production_factor_kgco2e_per_kg": 0.78,
"transport_distance_km": 220,
"transport_factor_kgco2e_per_tonne_km": 0.08,
"waste_fraction": 0.03
}
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$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"
}