Selects a published emissions factor by activity, region and source edition
Selects a published emissions factor by activity, region and source edition. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. This is neither legal advice nor customs advice.
3000 (raw units)
price
2
calls / 30d
2
unique payers
2026-09-14
updated
Provider
klima.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": {
"activity": "diesel",
"factors": [
{
"activity": "diesel",
"factor": 1,
"region": "GB",
"scope": "WTW",
"unit": "kgCO2e/unit"
}
],
"region": "GB",
"source": {
"published_at": "2026-06-10T00:00:00Z",
"title": "UK 2026 conversion factors",
"url": "https://www.gov.uk/government/publications/greenhouse-gas-reporting-conversion-factors-2026"
}
},
"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": {
"activity": {
"description": "",
"maxLength": 512,
"minLength": 1,
"type": "string"
},
"factors": {
"items": {
"additionalProperties": false,
"properties": {
"activity": {
"description": "",
"maxLength": 512,
"minLength": 1,
"type": "string"
},
"factor": {
"description": "",
"maximum": 1000000000000,
"minimum": 0,
"type": "number"
},
"region": {
"description": "",
"maxLength": 512,
"minLength": 1,
"type": "string"
},
"scope": {
"description": "",
"maxLength": 512,
"minLength": 1,
"type": "string"
},
"unit": {
"description": "",
"maxLength": 512,
"minLength": 1,
"type": "string"
}
},
"required": [
"activity",
"region",
"factor",
"unit",
"scope"
],
"type": "object"
},
"maxItems": 10000,
"type": "array"
},
"region": {
"description": "",
"maxLength": 512,
"minLength": 1,
"type": "string"
},
"source": {
"additionalProperties": false,
"properties": {
"published_at": {
"format": "date-time",
"type": "string"
},
"title": {
"description": "",
"maxLength": 300,
"minLength": 3,
"type": "string"
},
"url": {
"format": "uri",
"type": "string"
}
},
"required": [
"url",
"published_at",
"title"
],
"type": "object"
}
},
"required": [
"activity",
"region",
"factors",
"source"
],
"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://klima.halowerk.com/v1/emission-factor" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://klima.halowerk.com/v1/emission-factor");
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://klima.halowerk.com/v1/emission-factor")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/15320.json, and this resource appears in /discovery/resources and /discovery/search.