Know about: Information required before drafting the agreement; Essential clauses that need to be covered in an ecommerce vendor agreement. We'll help you craft the best vendor contract agreement for your specific needs, and help you manage that relationship as long as you need it.Our e-commerce templates guide you through each step of your journey. Choose a template, and create and download your document easily! A marketplace vendor agreement is a legal document between a vendor and a marketplace. Using an online marketplace allows someone to become an e-commerce vendor. Participation in the platform apply. § 2 Service offer and availability. Those without the complete USA certifications is not eligible to participate in the Ecommerce. If you are interested in doing business with Wake County, you should register in the Bonfire System.