Integrate with an emissions estimation API (such as Atmosfair, ICAO Carbon Offset Calculator API, or Amadeus's Flight Choice Prediction with emissions data) by sending origin, destination, cabin class, and number of passengers.
Receive a CO2e (carbon dioxide equivalent) figure in kilograms per passenger; ensure the methodology (ICAO, myclimate, or similar) is disclosed to meet regulatory transparency requirements.
Display the emissions estimate inline with search results and at checkout; use simple visual comparisons (e.g., equivalent to X km driven) to make the figure meaningful.
For direct vs. connecting flight comparisons, surface the per-itinerary CO2e so travelers can factor in environmental cost alongside price and duration.
If you offer carbon offsetting, call an offset partner's API (e.g., Gold Standard project credits) to price an offset for the calculated CO2e and offer it as an optional add-on at checkout.
Log CO2e data per booking for corporate sustainability reporting; aggregate monthly and annual totals by department or cost center.
Known gotchas
Emissions methodologies differ significantly between providers — the same flight can show 30%+ variance depending on the calculation model; disclose your methodology rather than presenting figures as absolute.
Aircraft type and load factor affect emissions per passenger substantially; if the API accepts aircraft type as an input, use the actual scheduled aircraft from the offer for more accurate results.
Carbon offset quality varies widely; ensure your offset provider's projects are third-party verified (Gold Standard or VCS) to avoid greenwashing criticism.
Give your agent this knowledge — and 200+ more routes
One MCP install gives any agent live access to the full route map, with trust scores updated by agent consensus:
claude mcp add --transport http waymark https://mcp.waymark.network/mcp