> For the complete documentation index, see [llms.txt](https://apidocs.gsped.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://apidocs.gsped.com/gsped-api-english-version/overview.md).

# OVERVIEW

- [Labels in 5 minutes](https://apidocs.gsped.com/gsped-api-english-version/overview/etichette-in-5-minuti.md)
- [Introduction](https://apidocs.gsped.com/gsped-api-english-version/overview/introduzione.md)
- [Authentication](https://apidocs.gsped.com/gsped-api-english-version/overview/autenticazione.md): authentication method for API calls
- [Request and Response Format](https://apidocs.gsped.com/gsped-api-english-version/overview/formato-richieste-e-risposte.md): How to define the communication format
- [Couriers and services](https://apidocs.gsped.com/gsped-api-english-version/overview/corrieri-e-servizi.md): List of couriers and their services
- [Gsped codes](https://apidocs.gsped.com/gsped-api-english-version/overview/codici-gsped.md): List of Gsped codes and IDs
- [Throttling](https://apidocs.gsped.com/gsped-api-english-version/overview/throttling.md): Limits on consecutive calls