Tailscale offers an API to let you automate various aspects of your network.

You can find documentation for the API on GitHub →

Authentication

Requests to the API are authenticated via an API Key, which can be generated from the keys page of the admin console.

This API key will automatically expire after 90 days. If you want to continue using an API key after this key expires, you need to generate a new key. Keys can also be revoked before their expiration. Recently expired and revoked keys are shown on the keys page.

More details about authenticating with the API can be found on GitHub.