{"name":"Carbon Footprint Calculator API","version":"0.1.0","description":"Calculate Scope 3 GHG emissions for freight transportation","endpoints":{"POST /calculate":"Calculate emissions for a shipment leg","POST /multimodal":"Calculate emissions for multimodal shipment","GET /route":"Calculate emissions for common shipping route","GET /compare":"Compare ocean vs air emissions","GET /factors":"View emission factors by mode","GET /offset":"Estimate carbon offset cost","GET /health":"Health check"},"transport_modes":{"trucking":["heavy_duty_truck","medium_duty_truck","light_duty_truck","truckload_tl","less_than_truckload_ltl","parcel","default"],"rail":["intermodal","carload","default"],"ocean":["container_large","container_medium","container_small","per_teu_km","transpacific","transatlantic","default"],"air":["short_haul","medium_haul","long_haul","freighter","belly_cargo","default"],"barge":["river","coastal","default"]},"example_request":{"mode":"trucking","subtype":"truckload_tl","weight":10000,"weight_unit":"kg","distance":500,"distance_unit":"miles"},"data_sources":["EPA GHG Emission Factors Hub (2025)","GLEC Framework v3.2","IMO Fourth GHG Study","SmartWay Program"],"output_units":"kg CO2e (carbon dioxide equivalent)","pricing":"FREE"}