# tinker auth ## **tinker auth** Manage authentication that the Tinker SDK will use. The `TINKER_API_KEY` environment variable will take precedence over any authentication managed by the CLI. ### tinker auth login Authenticate with Tinker using the browser login flow. **Options:** - `--api-key` - Manually set an existing API key created in [Tinker Console](https://tinker.thinkingmachines.ai/keys). ### tinker auth logout Clear stored authentication credentials and delete generated API keys from server. ### tinker auth status Show current authentication status, including whether credentials are available locally and whether they are valid for use with Tinker.