Alchemy
Blockchain developer API for NFT collections, token contracts, owners, transfers, prices, and on-chain metadata.
Designed for web3 apps that read NFT collections by owner or contract, fetch floor prices and rarity, and pull historical token-price data.
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Example Use Cases
These are example ways Snow can use Alchemy when building apps with you. This list is meant to show examples, not document every possible capability. Connecting an account does not make Snow run these automatically on its own.
Tool to check if a wallet address owns any token from a specific NFT collection. Use this when you need to verify collection ownership without retrieving full NFT details, supporting both ERC721 and ERC1155 standards.
Tool to check if an NFT contract is marked as spam by Alchemy. Use when you need to verify the legitimacy of an NFT contract before interacting with it or displaying its assets. Returns true if the contract is flagged as spam, false if it's valid or hasn't been evaluated yet.
Tool to determine if a specific NFT contract is marked as spam by Alchemy. Use when you need to verify the legitimacy of an NFT contract address before interacting with it. Available on paid Alchemy tiers only.
Tool to check if a specific NFT token is marked as an airdrop. Use when you need to determine whether an NFT was distributed via airdrop mechanism. Returns true if the token is identified as an airdrop, false otherwise.
Tool to determine whether an NFT was airdropped to the owner address. Use when you need to identify if a specific token was received as an airdrop rather than through a purchase or mint.
Tool to check if a wallet address holds any NFTs from a specific contract. Use when you need to verify NFT ownership for access control, membership verification, or token-gating features. Supports both ERC721 and ERC1155 contracts.
Tool to compute the rarity of each attribute for a specific NFT based on its collection. Returns prevalence data for each trait, indicating how common or rare each attribute is compared to other NFTs in the same collection. Use when analyzing NFT rarity for trading decisions, collection analysis, or valuation purposes.
Tool to retrieve all NFT collections held by a specified owner address. Use when you need to get a comprehensive view of what NFT collections a wallet owns, including collection metadata, ownership counts, and spam classification. Only supported on Ethereum. Supports pagination for large collections and filtering options to include or exclude spam/airdrops.
Tool to retrieve metadata for multiple NFT contracts in a single batch request. Use when you need to fetch contract information for several NFT collections at once to improve efficiency and reduce API calls.
Tool to get the metadata for an NFT contract including name, symbol, total supply, and token type (ERC721/ERC1155). Use when you need to retrieve comprehensive contract information such as deployer address, deployment block, OpenSea metadata, and collection details.