# Shield Documentation

* [Installation Guide](install.md)
* [Concepts You Need To Know](concepts.md)
* [Quick Start Guide](quickstart.md)
* [Authentication](authentication.md)
* [Authorization](authorization.md)
* [Auth Actions](auth_actions.md)
* [Events](events.md)
* [Testing](testing.md)
* [Customization](customization.md)

Guides:
* [Protecting an API with Access Tokens](guides/api_tokens.md)
* [Mobile Authentication with Access Tokens](guides/mobile_apps.md)