> For the complete documentation index, see [llms.txt](https://docs-integration.squake.earth/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs-integration.squake.earth/api-calculations-request-response.md).

# Calculation API Examples

Understanding which API request items are required for each methodology can sometimes be confusing, as each activity and methodology has its unique parameters and considerations. To help guide you through this, we provide a clear breakdown, activity-by-activity and methodology-by-methodology, so you know exactly what data needs to be included in your request and what to expect in the response. This way, whether you're calculating emissions for a travel or logistics activity, you'll have a precise guide for crafting requests and interpreting responses for each specific case, ensuring accurate and reliable carbon calculations.

For **multi-leg passenger flights** sent as a single item with a **`routing`** chain (instead of origin and destination), see [**Flight: Routing (multi-leg)**](/api-calculations-request-response/travel/flight/flight-routing.md) under Travel.