> ## Documentation Index
> Fetch the complete documentation index at: https://unkey-chronark-cli.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# create-session

> Create a short-lived Customer Portal session

Create a session ID valid for 15 minutes and exchangeable exactly once for a 24-hour browser session. Redirect the end user to the returned URL.

## Usage

```bash theme={"theme":"kanagawa-wave"}
unkey api portal create-session [flags]
```

## Flags

<ParamField body="--slug" type="string" required>The 3-64 character lowercase portal configuration slug.</ParamField>
<ParamField body="--external-id" type="string" required>The end user's identifier in your system.</ParamField>
<ParamField body="--permissions" type="string[]" required>Capabilities: `keys:read`, `keys:create`, `keys:reroll`, and `analytics:read`.</ParamField>
<ParamField body="--preview" type="bool" default="false">Create a preview session for testing.</ParamField>

## Global Flags

| Flag         | Type   | Description                                                                                   |
| ------------ | ------ | --------------------------------------------------------------------------------------------- |
| `--root-key` | string | Override root key (`$UNKEY_ROOT_KEY`)                                                         |
| `--api-url`  | string | Override API base URL (default: `https://api.unkey.com`)                                      |
| `--config`   | string | Path to config file (default: `~/.unkey/config.toml`)                                         |
| `--output`   | string | Output format, use `json` for raw JSON                                                        |
| `--body`     | string | Send this JSON string as the request body. You cannot combine it with request-building flags. |

## Examples

```bash theme={"theme":"kanagawa-wave"}
unkey api portal create-session --slug=my-portal --external-id=user_123 --permissions=keys:read,keys:reroll
```

See the [API reference](/docs/api-reference/v2/portal/create-session).