---
title: "Authentication"
slug: "150-core-authentication"
updated: 2025-03-19T14:52:47Z
published: 2025-03-19T16:03:18Z
canonical: "docs.developer.comcast.com/150-core-authentication"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.developer.comcast.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Authentication

**Authentication Module 1.5.0 | Core SDK**

## Usage

To use the Authentication module, you can import it into your project from the Firebolt SDK:

```
import { Authentication } from '@firebolt-js/sdk'
```

## Overview

A module for acquiring authentication tokens.

## Methods

### device

Get a device token scoped to the current app.

```
function device(): Promise<string>
```

Promise resolution:

Capabilities:

| Role | Capability |
| --- | --- |
| uses | xrn:firebolt:capability:token:device |

#### Examples

Acquire a Firebolt device identity token

JavaScript:

```
import { Authentication } from '@firebolt-js/sdk'

let token = await Authentication.device()
console.log(token)
```

Value of `token`:

```
'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c'
```

**JSON-RPC:**

Request:

```
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "Authentication.device",
  "params": {}
}
```

Response:

```
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c"
}
```

---

### root

Get a root device token.

```
function root(): Promise<string>
```

Promise resolution:

Capabilities:

| Role | Capability |
| --- | --- |
| uses | xrn:firebolt:capability:token:root |

#### Examples

Acquire a Firebolt root device identity token

JavaScript:

```
import { Authentication } from '@firebolt-js/sdk'

let token = await Authentication.root()
console.log(token)
```

Value of `token`:

```
'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c'
```

**JSON-RPC:**

Request:

```
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "Authentication.root",
  "params": {}
}
```

Response:

```
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c"
}
```

---

### session

Get a destributor session token.

```
function session(): Promise<string>
```

Promise resolution:

Capabilities:

| Role | Capability |
| --- | --- |
| uses | xrn:firebolt:capability:token:session |

#### Examples

Acquire a distributor session token

JavaScript:

```
import { Authentication } from '@firebolt-js/sdk'

let token = await Authentication.session()
console.log(token)
```

Value of `token`:

```
'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c'
```

**JSON-RPC:**

Request:

```
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "Authentication.session",
  "params": {}
}
```

Response:

```
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c"
}
```

---

### token

[Deprecated] This method is deprecated as of since version 0.9.0. Please use `Authentication module has individual methods for each token type.` as a replacement.

```
function token(
  type: TokenType,
  options: object,
): Promise<AuthenticationTokenResult>
```

---

## Types

### TokenType

```
TokenType: {
    PLATFORM: 'platform',
    DEVICE: 'device',
    DISTRIBUTOR: 'distributor',
},
```

---

### AuthenticationTokenResult

```
type AuthenticationTokenResult = {
  value: string
  expires?: string
  type?: string
}
```

---