NFT API Chain Support Matrix

Method	Ethereum	Polygon	Arbitrum	Optimism	Base	Starknet	Astar	Solana
getNFTsForOwner							Unsupported	Unsupported
getContractsForOwner							Unsupported	Unsupported
getOwnersForNFT							Unsupported	Unsupported
isHolderOfContract							Unsupported	Unsupported
getOwnersForContract							Unsupported	Unsupported
getNFTMetadata							Unsupported	Unsupported
getNFTMetadataBatch							Unsupported	Unsupported
getContractMetadata							Unsupported	Unsupported
getContractMetadataBatch							Unsupported	Unsupported
searchContractMetadata `BETA`	; mainnet only	Unsupported	Unsupported	Unsupported	; mainnet only	Unsupported	Unsupported	Unsupported
getNFTsForContract						Unsupported	Unsupported	Unsupported
getCollectionMetadata		Unsupported	Unsupported	Unsupported	Unsupported	Unsupported	Unsupported	Unsupported
getCollectionsForOwner		Unsupported	Unsupported	Unsupported	Unsupported	Unsupported	Unsupported	Unsupported
getSpamContracts	; mainnet only	; mainnet only	Unsupported	Unsupported	Unsupported	Unsupported	Unsupported	Unsupported
isSpamContract	; mainnet only	; mainnet only	Unsupported	Unsupported	Unsupported		Unsupported	Unsupported
isAirdropNft	; mainnet only	; mainnet only	Unsupported	Unsupported	Unsupported	Unsupported	Unsupported	Unsupported
getFloorPrice	; mainnet only	Unsupported	Unsupported	Unsupported	Unsupported	Unsupported	Unsupported	Unsupported
getNFTSales	; mainnet only	; mainnet only	Unsupported	; mainnet only	Unsupported	Unsupported	Unsupported	Unsupported
computeRarity	; mainnet only	; mainnet only	Unsupported	Unsupported	Unsupported	Unsupported	Unsupported	Unsupported
summarizeNFTAttributes	; mainnet only	; mainnet only	Unsupported	Unsupported	Unsupported	Unsupported	Unsupported	Unsupported
reportSpam						Unsupported	Unsupported	Unsupported
refreshNftMetadata						Unsupported	Unsupported	Unsupported

NFT API Endpoints By Usecase

🚧
Choosing a testnet
For every mention of Goerli in the supported chains below, please note that we recommend using Sepolia instead, as the Ethereum Foundation has announced that Goerli will soon be deprecated.
Alchemy has full Sepolia support and a free [Sepolia faucet](https://sepoliafaucet.com/ also.

Use Case	Endpoint	What to use it for
Ownership & Token Gating	getNFTsForOwner	Retrieve the NFTs owned by a wallet address
	getContractsForOwner	Retrieve the list of NFT contracts from which a wallet address owns one or more tokens.
	getOwnersForNFT	Retrieve the owners of a given token
	getOwnersForCollection	Retrieve all the owners for a given NFT contract or collection, including snapshotting owners at any block number.
	isHolderOfCollection	Check whether a given wallet owns any NFT in a collection
Metadata	getNFTMetadata	Retrieve the metadata associated with a given NFT i.e. a specific tokenId
	getNFTMetadataBatch	Retrieve the metadata associated with several NFTs across collections in a single request
	getContractMetadata	Retrieve the metadata associated with a given contract or collection
	getContractMetadataBatch	Retrieve contract metadata for several different contracts in a single request
	searchContractMetadata `BETA`	Search the metadata across contracts for specific keywords
	refreshNftMetadata	Submit a request that Alchemy refresh the cached NFT metadata for a particular token.
	reingestContract `BETA`	Triggers metadata refresh for an NFT collection/refreshes stale metadata after a reveal
	getNFTsForContract	Retrieve all the NFTs for a given contract or collection
Spam Detection	getSpamContracts `BETA`	Retrieve a list of contracts marked as spam
	isSpamContract `BETA`	Returns whether a specific contract is marked as spam or not
	reportSpam `BETA`	Report a contract if you think its spam
Marketplace Data	getFloorPrice `BETA`	Retrieve the floor price of a NFT collection by marketplace
	getNFTSales `BETA`	Retrieve NFT sales data across marketplaces
Rarity	computeRarity `BETA`	Compute the rarity of each attribute of an NFT.
	summarizeNFTAttributes `BETA`	Generate a summary of attribute prevalence for an NFT collection.
Notifications	NFT Activity Webhook	Receiving real-time updates for NFT Transfers and NFT mints
	NFT Metadata Updates Webhook	Receiving real-time updates for NFT metadata changes