Public API

Climate impact data
you can build on.

Programmatic access to the forecasting engine behind 10,000+ climate solution models. Semantic search, structured responses, audit-grade provenance. All via REST.

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Endpoints

Three queries. The whole climate data stack.

Technologies, emissions intensities, and market sizing. All semantic, all interoperable, all from the same methodology.

POST

Technology Search

/v0/query/technologies

Semantic search across 10,000+ climate technologies. Natural language in, structured forecasts out. Unit impact values, addressable market sizing, and year-by-year projections.

  • Natural language queries across climate solutions
  • Forward-looking impact data (kg CO2e per functional unit)
  • Addressable market forecasts with configurable time horizons
  • Hierarchical industry classifications
POST

GHG Intensity Search

/v0/query/ghg-intensities

Baseline and solution-level emissions intensities. Filter by unit category, intensity type, and geography. The building blocks of defensible avoided emissions calculations.

  • Baseline and solution intensity data
  • Filterable by unit category (energy, mass, distance, etc.)
  • Geography-specific results
  • Standard exclusion filters for normative records
POST

Market Search

/v0/query/markets

Market size data across industries and geographies. The denominator in every impact calculation: how big is the opportunity, and where.

  • Market sizing across sectors and geographies
  • Multiple unit types (USD, units sold, capacity)
  • QA-validated data with provenance
  • Semantic search with similarity scoring

Example request

curl -X POST https://api.koi.eco/v0/query/technologies \
  -H "koi-api-key: koi_your_key" \
  -d '{"query": "direct air carbon capture", "limit": 5}'
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Why This API

The data you were going to build in-house.

Except it took a decade of climate science research, thousands of validated models, and a methodology that aligns with WBCSD, Project Frame, PCAF, and SBTi. You probably have other things to ship.

Semantic, Not Keyword

Describe what you need in plain language. The API understands climate context, not just string matching.

Audit-Grade Provenance

Every data point carries QA status, version history, and methodology lineage. Built for due diligence, not just dashboards.

10,000+ Technology Models

The deepest library of climate solution forecasts available programmatically. Baseline, technology, and market, fully interoperable.

One Integration, Full Stack

Technologies, GHG intensities, and markets in a single API. No stitching together three vendors and hoping the units align.

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Integration Patterns

Plug into whatever you're already building.

Portfolio Analytics

Enrich your investment platform with forward-looking climate impact data. Screen, score, and report at portfolio scale.

AI & LLM Pipelines

Ground your climate AI in validated data. Available via REST or MCP for direct model integration.

Custom Reporting

Pull exactly the data you need into your reporting workflows. LP letters, board decks, regulatory filings.

API key authentication. Read or read/write scopes.

Generate keys from your account settings. Organization-scoped permissions, no OAuth ceremony.

See plans & pricing
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Built by the team behind the methodology

Stop assembling climate data.
Start making decisions with it.

10,000+ technology models. Forward-looking forecasts. Emissions intensities and market sizing. One API call away.

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