---
title: fastly auth login
summary: Authenticate and store a default token (paste token or use --sso)
url: https://www.fastly.com/documentation/reference/cli/auth/login
---

Authenticate and store a default token (paste token or use --sso)

## Flags

| Flag | Description | Required | Default |
|------|-------------|----------|----------|
| `--sso` | Authenticate via browser-based SSO (requires --token <name> to specify the stored token name) | No | - |

## Global options

| Flag | Description | Required | Default |
|------|-------------|----------|----------|
| `--help` | Show context-sensitive help. | No | - |
| `--accept-defaults` | Accept default options for all interactive prompts apart from Yes/No confirmations | No | - |
| `--auto-yes` | Answer yes automatically to all Yes/No confirmations. This may suppress security warnings | No | - |
| `--debug-mode` | Print API request and response details (NOTE: can disrupt the normal CLI flow output formatting) | No | - |
| `--non-interactive` | Do not prompt for user input - suitable for CI processes. Equivalent to --accept-defaults and --auto-yes | No | - |
| `--quiet` | Silence all output except direct command output. This won't prevent interactive prompts (see: --accept-defaults, --auto-yes, --non-interactive) | No | - |
| `--token` | Fastly API token, or name of a stored auth token (use 'default' for the default token). Falls back to FASTLY_API_TOKEN env var | No | - |
| `--verbose` | Verbose logging | No | - |

## Examples

### Authenticate by pasting an API token

```bash
fastly auth login
```

### Authenticate using browser-based SSO

```bash
fastly auth login --sso --token my-sso
```