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updatedAt: 2026-08-03T18:02:39.000Z
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# Retrieve your API access_token
Migrate to Global APIs: New sellers and approved Solution Providers should use Global APIs. Existing users must migrate to avoid disruption and access new capabilities coming to your market. Explore Global Marketplace migration resources.
Before you can make API calls, you will need to retrieve your API `access_token`with the Token API.
Use Token API in Postman
1\. Fork the Authentication API on Postman.
2\. Add your `clientID` and `clientSecret` as variables.
3\. Set up the **Authentication** to use **Basic Auth** with your `clientID` and `clientSecret` as the **Username** and **Password** (respectively).
4\. Set the POST Token API to “**Inherit auth from parent**”.
5\. Call the Post Token API. The response will have your `access_token`.
6\. (Optional) Under the **Scripts** tab, you could add the script below to the **Post-response** section to automatically update your `access_token` and add it as an Environment Variable every time you call the **Post Token** API. By default, the variable is named, “`token`”. You could change the name to something of your choice.\
```Text Python
tests["STATUS"] = responseCode.code === 200
var response = JSON.parse(responseBody);
pm.environment.set("token", response.access_token);
```
With your `access_token` , you can use it to make API calls with the other APIs offered by the Walmart Marketplace team. You will use the `access_token` for the `WM_SEC.ACCESS_TOKEN` header parameter (send the parameter with this format: `Basic access_token` ) for all other API calls.
A few of the frequently used APIs are listed below:
* Items API
* Orders API
* Inventory API
* Feeds API
You can review the other APIs in the Marketplace Developer Portal.