A Listing Agent is the licensed real estate agent you hire to market and sell your home at an agreeable price. He/she will place your home on the MLS at an agreed upon listing date and work to sell your home at the best possible market value.
During your listing meeting, then agent will learn about you and your home to help begin to establish goals and expectations for the upcoming sale. He/she will review your home and compare it to other similar sales within the area to create a target price. Ultimately, the buyer of your home will offer the best possible price based on market value at that time. Market conditions determine the value of your home more than anything else.
The Listing Agent will negotiate on your behalf to obtain the best possible offer you can receive. If you receive multiple offers, he/she will help you understand the difference between offers and why he/she suggests one versus another. You may need a certain price to sell and not owe at closing, occupancy after closing, etc. and your buyer may have asked for things that you did not previously consider or arrange. Your Listing Agent will help decipher the various contract(s) received so you are fully aware of all the ins and outs of the Purchase Agreement you are binding with the buyer and yourself.
Finally, the agent will send all purchase documents to the proper parties such as title company, your mortgage provider, etc. He/she will note the timelines you agreed to and make sure the buyer is also falling within those timelines. For example, if they have a 7 day inspection, your Listing Agent will enforce that timeframe if it appears it will not be met by the buyer. In short, your agent will work behind the scenes to get you to the closing table as smoothly as possible and involve you for as little as possible.