"Agent representation" refers to a situation where a person or a company appoints someone to act on their behalf. The appointed person, called an agent, represents and makes decisions for the person or company they are representing. Full definition
Most of the publishers I found wouldn't even read a manuscript without agent representation, so I began to give up on the idea of ever publishing my book. (kdp.amazon.com)
If you want to secure literary agent representation, include excerpts from your review quotes at the bottom of your query letter or in the text itself. (selfpublishingrelief.com)
Self - published authors who aren't seeking agent representation can still benefit from a writers conference. (selfpublishingrelief.com)