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get
/api/lookup
Look up emission factors for a ZIP code
get
/api/lookup/by-coordinates
Look up emission factors by latitude/longitude
post
/api/lookup/batch
Look up emission factors for up to 100 ZIP codes
post
/api/calculate
Calculate Scope 2 CO₂e for a ZIP + kWh, location-based and market-based
post
/api/bulk
Process a CSV file of ZIP codes
get
/api/rate
Latest monthly average retail electricity rate by sector
get
/api/intensity
Hourly grid carbon intensity (EIA-930 fuel mix derived, data lags up to ~1 day)
get
/api/plant-emissions
Unit-level emissions from EPA CAMD (fossil units >25 MW): per-facility summary from daily data, or raw unit-hour records
get
/api/utility-rate
Utility-specific electricity tariff from OpenEI URDB (upgrade from state-average /api/rate)
post
/api/compare
Rank 2-25 candidate sites on grid carbon, retail $/kWh and cleanest daily window
get
/api/cleanest-hours
Cleanest contiguous N-hour window of the day to run a flexible load (EIA-930, last ~7 days)
get
/api/fuel-emissions
Scope 1 stationary combustion CO₂e for one fuel (GHG Emission Factors Hub 2026, Cornerstone, AR6; edition=2025 for EPA's, AR5); no fuel lists fuels
post
/api/fuel-emissions
Scope 1 CO₂e for several fuels with a total
post
/mcp
MCP server (JSON-RPC 2.0 over Streamable HTTP, stateless, keyless): initialize, tools/list, tools/call. 11 tools mirroring these REST endpoints. Setup: https://emission-factors.com/mcp-setup
get
/health
Health check
get
/status
Edition, ZIP coverage (counted from the mapping) and the startup self-check result
get
/methodology
Methodology, data sources, licenses and edition policy (JSON; browsers get the page)
get
/openapi.json
This OpenAPI specification
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Health check
get
/health
Request
Base URL:
https://emission-factors.com
URL:
https://emission-factors.com/health
Auth:
none declared
Response
OK
Changes
No recorded changes to this operation across all 1 revision of this API.