# Refresh token

The `refresh_token` grant type is used by clients to exchange a refresh token for an expired access token.

**Sales channels** can use this grant type to refresh a customer's access token with a "remember me" option. **Webapps** can use it to refresh the access token skipping the [authorization code step](/core/authentication/authorization-code.md#getting-an-authorization-code).

{% hint style="warning" %}
If a scope (different from the default `market:all`) was included in the expired access token request, you must specify the same scope when using the refresh token.
{% endhint %}

## Getting an access token

To get an access token using the `refresh_token` grant type, send a `POST` request to the `/oauth/token` endpoint, passing the API client credentials in the request body.

### Request

**POST** <https://auth.commercelayer.i&#x6F;**/oauth/token>\*\*

### Arguments

| Body parameter      | Type   | Required | Description                                                                                                                                                   |
| ------------------- | ------ | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **`grant_type`**    | String | Required | `refresh_token`                                                                                                                                               |
| **`refresh_token`** | String | Required | A valid `refresh_token`.                                                                                                                                      |
| **`client_id`**     | String | Required | Your client ID (from you API credentials).                                                                                                                    |
| **`client_secret`** | String | Optional | Your client secret (required for confidential API credentials — i.e. in case of [authorization code flow](#webapp-application-with-authorization-code-flow)). |
| **`scope`**         | String | Optional | Your access token scope (market, stock location). Required if the expired access token had a scope (must be the same).                                        |

### Examples

#### Sales channel with password flow

{% tabs %}
{% tab title="Request" %}
The following request tries to exchange [a valid refresh token](/core/authentication/password.md#sales-channel) for an expired access token of a sales channel:

<pre class="language-sh"><code class="lang-sh">curl -g -X POST \
  'https://auth.commercelayer.io/oauth/token' \
  -H 'Accept: application/json' \
  -H 'Content-Type: application/json' \
  -d '{
<strong>    "grant_type": "refresh_token",
</strong><strong>    "refresh_token": "{{your_refresh_token}}",
</strong><strong>    "client_id": "{{your_client_id}}",
</strong><strong>    "scope": "market:id:xYZkjABcde"
</strong>  }'
</code></pre>

{% endtab %}

{% tab title="Response" %}
On success, the API responds with a `200 OK` status code, returning the requested access token and customer info:

<pre class="language-json"><code class="lang-json">{
<strong>    "access_token": "acC3sSt0K3Nwrt6kic7.abc4bnm5...",
</strong>    "token_type": "bearer",
    "expires_in": 14400,
<strong>    "refresh_token": "r3fResHt0k3ndfg6eft3gbj167",
</strong><strong>    "scope": "market:id:xYZkjABcde",
</strong>    "created_at": 123456789,
    "owner_id": "zxcVBnMASd",
    "owner_type": "customer"
}
</code></pre>

{% endtab %}
{% endtabs %}

#### Webapp with authorization code flow

{% tabs %}
{% tab title="Request" %}
The following request tries to exchange [a valid refresh token](/core/authentication/authorization-code.md#webapp-1) for an expired access token of a webapp:

<pre class="language-sh"><code class="lang-sh">curl -g -X POST \
  'https://auth.commercelayer.io/oauth/token' \
  -H 'Accept: application/json' \
  -H 'Content-Type: application/json' \
  -d '{
<strong>  "grant_type": "refresh_token",
</strong><strong>  "refresh_token": "{{your_refresh_token}}",
</strong><strong>  "client_id": "{{your_client_id}}",
</strong><strong>  "client_secret": "{{your_client_secret}}"
</strong>}'
</code></pre>

{% endtab %}

{% tab title="Response" %}
On success, the API responds with a `200 OK` status code, returning the requested access token and customer info:

<pre class="language-javascript"><code class="lang-javascript">{
<strong>    "access_token": "acC3sSt0K3Nwrt6kic7.abc4bnm5...",
</strong>    "token_type": "bearer",
    "expires_in": 7200,
<strong>    "refresh_token": "r3fResHt0k3ndfg6eft3gbj167",
</strong><strong>    "scope": "market:all",
</strong>    "created_at": 123456789,
    "owner_id": "zxcVBnMASd",
    "owner_type": "user"
}
</code></pre>

{% endtab %}
{% endtabs %}


---

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