# Method-Specific Requirements
<a name="user-agent-prerequisites"></a>

In addition to the general [prerequisites](resource-tagging-prerequisites.md), ensure you meet the following requirements for User Agent string implementation:
+ Product listing on AWS Marketplace. See the [AWS Marketplace Seller Guide](https://docs.aws.amazon.com/marketplace/latest/userguide/user-guide-for-sellers.html) for general information. For product-specific listing guide instructions:    
[See the AWS documentation website for more details](http://docs.aws.amazon.com/PRM/latest/aws-prm-onboarding-guide/user-agent-prerequisites.html)
+ Product that uses one or more of the [supported AWS services for User Agent string](user-agent-included-services.md)
+ Direct regular AWS API/CLI access from your application