With NFT Embed, with one switch, you can quickly turn any web page into a potential sale!
NFT Embed uses the Universe XYZ protocol to streamline transactions. By enabling the 'Marketplace' toggle, you get the ability to turn the embed into a potential sale! The marketplace toggle gives users the power to purchase embedded NFTs in various ways.
The protocol takes a minor (0.3%) fee for facilitating transactions on the Ethereum blockchain.
With NFT Embed, you can directly list NFTs with the protocol, embed NFTs already for sale, and make direct purchases and offers!
Code: Marketplace toggle
showMarket=true // marketplace toggle enabled
showMarket=false // marketplace toggle disabled
First, you need to connect your wallet:
Before purchasing any NFT, there will be an 'approval' fee. This transaction allows your address to interact with the Universe exchange contracts and the NFT contract.
After approving the smart contract, you're interacting with; you'll get prompted with an authentication signature.
This signature gets used whenever you list an NFT, purchase directly or place an offer. The values of the transaction are included in your signature and reflected in the order book.

Listing NFTs

To list NFTs, you'll establish the amount you're willing to sell for and an optional finders fee— set via the embed —will be included in the sale.
  1. 1.
    Get the token address : The specific address of the NFT contract
  2. 2.
    Get the token ID : The specific token you want to list from the contract
Token ID = a unique number assigned to an NFT
Example; The token below is from the Lobby Lobster contract and the token ID is 5987
Token info can easily be gathered from Zapper Fi!
You don't need to add a finders fee if you're the creator.
Additionally, some people may opt to use the finders fee for a spare address or to reward someone else.

Listing Process

  1. 1.
    Fill in the details for the NFT on
  2. 2.
    Connect your wallet
  3. 3.
    Select 'List'
  4. 4.
    Set your price
  5. 5.
    Approve the token: Mandatory or else the smart contract cannot exchange the NFT
  6. 6.
    Select 'List' then accept the validation signature
To list an NFT with the embed you must be the owner of the token!

Buy Now

To buy NFTs with the NFT Embed, they must get listed on the Universe XYZ protocol.
From there, you can purchase listed NFTs with ease! The fees will get deducted from the sale total.
The option to buy now is on the right.


To make offers on NFTs that get embedded in webpages, you'll need to use wETH. (What is wETH?)
wETH is used to create orders for set amounts. The owner of an NFT can see your offer and has the choice to accept.
After offers are accepted, wETH gets transferred to the seller, and at the same time, the NFT gets transferred to a new owner— the successful bidder.
The offer button is on the left.
The page you'll see when approving wETH.
Transaction details in your wallet.


Navigating through checkout will give you a few different modals; you'll be sure to notice the purchase processing and the complete transaction screen.
During your purchase, a screen will be keeping track of the transaction.
After your transaction confirms, you should see a modal informing you that your purchase was successful!
You can quickly view your transactions on the blockchain during this process by clicking "Transaction ID."
Here is the typical structure of a transaction— in order of precedence.
  1. 1.
    NFT Cost
  2. 2.
    Collection Fee
  3. 3.
    Exchange Fee — goes to UniverseDAO
  4. 4.
    Royalty Share — Finders Fee or Affiliate Sale
Note: All funds are split and transferred to their respective parties within a single transaction. You'll need to verify further via Etherscan or another block explorer.