# Token-based Authentication

**POST** `/v1/auth/grant`

Generates a temporary JSON Web Token (JWT) with a 30-second (by default) TTL and usage::write permission for core voice APIs, requiring an API key with Member or higher authorization. Tokens created with this endpoint will not work with the Manage APIs.

Base URL: `https://agent.deepgram.com`

Tags: `tokens`

## Authorization

| Option | Scheme | Type | Sent as | Scopes |
| --- | --- | --- | --- | --- |
| Option 1 | `ApiKeyAuth` | `apiKey` | header `Authorization` | — |

## Request body

Optional. Media type: `application/json`

Time to live settings

### Example request body

```json
{
  "ttl_seconds": 0
}
```

## Responses

| Status | Description | Media type |
| --- | --- | --- |
| `200` | Grant response | `application/json` |
| `400` | Invalid Request | `application/json` |

### Example response: 200 — Grant response

```json
{
  "access_token": "",
  "expires_in": 0
}
```

### Example response: 400 — Invalid Request

```json
{
  "err_code": "string",
  "err_msg": "string",
  "request_id": "string"
}
```

## Related pages

- [Analyze text content](./text_analyze.md)
- [audio](./tags/audio.md)
- [balances](./tags/balances.md)
- [breakdown](./tags/breakdown.md)
- [configurations](./tags/configurations.md)
- [Create a Project Invite](./invites_create.md)
- [Create a Project Key](./keys_create.md)
- [Create a Project Self-Hosted Distribution Credential](./distributioncredentials_create.md)
- [Create an Agent Configuration](./configurations_create.md)
- [Create an Agent Variable](./variables_create.md)

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