# Summary Representations When you fetch a list of resources, the response includes a subset of the attributes for that resource. This is the “summary” representation of the resource. Some attributes are computationally expensive for the API to provide. For performance reasons, the summary representation excludes those attributes. To obtain those attributes, fetch the “detailed” representation. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://support.portsip.com/development-portsip/rest-apis/version-22.2/get-started/summary-representations.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.