> For the complete documentation index, see [llms.txt](https://developer.esw.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.esw.com/adobe-commerce-magento/adobe-commerce-extension-integration/getting-started/security-token-service.md).

# Security Token Service

### Configuring ESW API access <a href="#configuring-esw-api-access" id="configuring-esw-api-access"></a>

ESW APIs are secured using a single security system called Security Token Service (STS). ESW uses the STS platform to issue, validate as well as renew security tokens that are required to authenticate with ESW APIs and access API endpoints. For more information, see [Access Tokens](/getting-started/get-started-with-esw/readme/publish-your-docs.md).

STS credentials required for the module to work can be obtained from an ESW representative.

The configuration section for the STS is accessible from the main module configuration tab.

{% hint style="warning" %}
**Test credentials** option allow you to validate the credentials to ensure they are correct before saving.
{% endhint %}

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