# NFT Trading **NFT Marketplace** is the platform where WalkA players can buy/sell their NFTs among each other. All Hound NFTs are tradable either separately or as a set at once. The buyers can offer a lower price, and sellers may accept or ignore the bid. The Marketplace utilizes particular transaction protocols known as smart contracts. These protocols regulate the connections between the seller and the buyer. Moreover, these smart contracts contain identifying data associated with an NFT. Hence, the process of buying and selling tokens becomes user-friendly and convenient. The Blockchain network also ensures an error-free payment procedure and provides a seamless transacting experience. --- # 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://walka.gitbook.io/whitepaper/marketplace/nft-trading.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.