> ## Documentation Index
> Fetch the complete documentation index at: https://www.1password.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# signin

Sign in to 1Password CLI using the 1Password desktop app.

```shell theme={null}
op signin [flags]
```

### Flags

```
-f, --force   Ignore warnings and print raw output from this command.
    --raw     Only return the session token.
```

To turn on the 1Password app integration:

1. Open the 1Password app.
2. Navigate to **Settings** > **Security** and turn on Touch ID, Windows Hello, or a
   Linux system authentication option.
3. Navigate to **Developer** > **Settings** and select **Integrate with 1Password CLI**.

[Learn more about the app integration.](/cli/app-integration/)

If you add multiple 1Password accounts to the 1Password app, 1Password CLI
determines which to use in this order:

1. The account specified with the `--account` flag.
2. The account specified by the `OP_ACCOUNT` environment variable.
3. The account you most recently signed in to with `op signin` in
   any terminal window.

`op signin` is idempotent. It only prompts for authentication if you
aren't already authenticated.

### Examples

Sign in and set the environment variable in one step:

```shell theme={null}
eval $(op signin --account acme.1password.com)
```