# Authentication

You can use any of the following methods to authenticate to the Seam API:

* [Use an API key.](https://docs.seam.co/latest/~/revisions/DFdrUdS2jQOnbJTNDT5a/core-concepts/authentication/api-keys)
* [Use a Personal Access Token.](https://docs.seam.co/latest/~/revisions/DFdrUdS2jQOnbJTNDT5a/core-concepts/authentication/personal-access-tokens)
* [Use client sessions and client session tokens.](https://docs.seam.co/latest/~/revisions/DFdrUdS2jQOnbJTNDT5a/core-concepts/authentication/client-session-tokens)