# API

- [Getting started](/api/getting-started.md)
- [Open API Specification](/api/open-api-specification.md)
- [Postman Collection](/api/postman-collection.md)
- [API Authentification](/api/api-authentification.md)
- [Offering Packages](/api/offering-packages.md)
- [Countries API](/api/countries-api.md)
- [Supported Devices API](/api/supported-devices-api.md)
- [Customers](/api/customers.md)
- [First Package](/api/first-package.md)
- [Activation Modes](/api/activation-modes.md)
- [eSIM Profiles](/api/esim-profiles.md)
- [Top-up](/api/top-up.md)
- [Package Refund](/api/package-refund.md)
- [Error Handling](/api/error-handling.md)