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Klima Footprint Aggregate
x402
Klima Footprint Aggregate is a paid API for AI agents from klima.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-28).
Aggregates multiple disclosed carbon footprint activity components into a single total, preserving nulls and surfacing unavailable fields by name.
Price / call$0.004
Success—
StatusUnknown
How this service works
Aggregates disclosed footprint components while keeping missing values separate. 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.
Output
Returns an aggregated total kgCO2e footprint across all submitted activities, with null values kept separate, a list of unavailable_fields by name, derivation method disclosures for derived values, and source/time-window/age metadata for source-backed values.
Example use cases
Corporate annual GHG report rollup
“I have 15 emission line items from our 2024 sustainability data — flights, electricity, heating, waste — each with a kgCO2e value or null where we couldn't measure it. Can you aggregate them into a single total footprint and show me which activities had missing data?”
CBAM compliance footprint summary
“Aggregate our supply chain footprint components for our steel goods shipment — I'll give you the activity IDs, their kgCO2e values from CBAM default factors, and the period '2024-H1'. I need a consolidated total with sourcing transparency for the customs declaration.”
Scope 3 emissions consolidation
“Roll up these 8 Scope 3 activity emissions — some have kgCO2e values, some are null because we're still waiting on supplier data — into one total and list the unavailable fields so I know what's still missing.”
Technical details
Endpoint
POSThttps://klima.halowerk.com/v1/footprint-aggregate?utm_source=zero.xyzWhen to prefer
Use this endpoint when you have already computed or retrieved individual activity-level kgCO2e values and need to consolidate them into a single disclosed total with transparent handling of missing data. It is the right choice when auditability matters — each component retains its source, derivation method, and time window. Prefer it over manual summation when null values need to be tracked separately and surfaced as unavailable_fields rather than silently dropped or zeroed.
Side effects
- Empty activities array (minItems:1 violation) returns validation error
- Activity missing required fields (id, kgco2e, source_title, period) returns schema validation error
- More than 10,000 activities submitted exceeds maxItems limit
- Malformed numeric kgco2e value (negative or non-numeric) fails minimum:0 constraint
- Network or payment failure returns 402 or 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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