Use of network composition descriptors for determining product compatibility

Using peer-to-peer device descriptors for determining product compatibility involves obtaining, via a home network, descriptors that describe a composition of the home network. The home network composition descriptors are compared to descriptors of products available from an e-commerce service provider that is external to the home network. The comparison determines compatibility of the products with the devices of the home network. Identity of compatible products selected from the products based on the comparison is communicated to a user.