metadataUri: [string] metadata URI of the token.If you want to generate metadata URI using NFT KIT, set the "metadataUri "value as an empty string.
metadata: NFT KIT will use values inside metadata to generate metadata URI of the token. It confirms the structure defined by ERC721 and ERC1155 standards. For more details about NFT metadata standard.
description: [string] a description of the token
name: [string] the name of this specific token
image: [string] this is the URL to the image of the item. Can be just about any type of image and can be IPFS URLs or paths.
image_data: [string] Raw SVG image data, if you want to generate images on the fly (not recommended). Only use this if you're not including the image parameter.
external_url: [string] This is the URL that will appear below the asset's image on OpenSea and will allow users to leave OpenSea and view the item on your site.
attributes: [string] To give your items a little more pizazz, we also allow you to add custom "attributes" to your metadata that will show up underneath each of your assets.