# Alchemy

Alchemy is a blockchain development platform that provides powerful APIs and developer tools for building and scaling Ethereum applications

- **Category:** developer tools
- **Auth:** API_KEY
- **Tools:** 48
- **Triggers:** 0
- **Slug:** `ALCHEMY`
- **Version:** 20260217_00

## Tools

### Compute NFT Rarity

**Slug:** `ALCHEMY_COMPUTE_RARITY_V2`

Tool to compute the rarity of a specific NFT based on its traits and their prevalence in the collection. Use when you need to determine how rare or common an NFT is compared to other tokens in the same collection. Returns a list of traits with their prevalence values (0.0 to 1.0, where lower values indicate rarer traits).

### Compute NFT Rarity

**Slug:** `ALCHEMY_COMPUTE_RARITY_V3`

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.

### Get NFT Collection Metadata

**Slug:** `ALCHEMY_GET_COLLECTION_METADATA`

Tool to get metadata for an NFT collection using its marketplace slug (OpenSea, LooksRare, etc). Use when you need collection-level information such as name, description, social links, and floor price. This is useful for discovering collection details without needing the contract address.

### Get Collections for Owner

**Slug:** `ALCHEMY_GET_COLLECTIONS_FOR_OWNER`

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.

### Get NFT Contract Metadata

**Slug:** `ALCHEMY_GET_CONTRACT_METADATA`

This tool retrieves metadata for a given NFT smart contract. Essential for obtaining basic NFT collection details such as contract name, symbol, total supply, token type (ERC721 vs ERC1155), contract deployer address, deployed block number, OpenSea metadata, and contract verification status.

### Get NFT Contract Metadata Batch V2

**Slug:** `ALCHEMY_GET_CONTRACT_METADATA_BATCH_V2`

Tool to retrieve comprehensive metadata for multiple NFT smart contracts in a single batch request using Alchemy's NFT API v2. Use when you need NFT collection details for multiple contracts efficiently, including contract name, symbol, total supply, token type (ERC721/ERC1155), deployer address, deployment block, and OpenSea marketplace data. Maximum of 100 contract addresses per batch.

### Get Contract Metadata Batch V3

**Slug:** `ALCHEMY_GET_CONTRACT_METADATA_BATCH_V3`

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.

### Get NFT Contract Metadata V2

**Slug:** `ALCHEMY_GET_CONTRACT_METADATA_V2`

Tool to retrieve comprehensive metadata for an NFT smart contract using Alchemy's NFT API v2. Use when you need NFT collection details such as contract name, symbol, total supply, token type (ERC721/ERC1155), deployer address, deployment block, and OpenSea marketplace data.

### Get Contract Metadata V3

**Slug:** `ALCHEMY_GET_CONTRACT_METADATA_V3`

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.

### Get Contracts for Owner V2

**Slug:** `ALCHEMY_GET_CONTRACTS_FOR_OWNER_V2`

Tool to get all NFT contracts owned by a specific address. Returns contract-level information including contract addresses, token types, balances, and metadata. Use when you need to retrieve the list of NFT collections owned by an address rather than individual NFTs.

### Get Contracts for Owner (NFT API v3)

**Slug:** `ALCHEMY_GET_CONTRACTS_FOR_OWNER_V3`

Tool to get all NFT contracts owned by an address with contract metadata. Use when you need to retrieve a comprehensive list of NFT collections held by a specific wallet address, including detailed contract information such as token type, total supply, deployer info, spam classification, and OpenSea metadata. Supports pagination for addresses with large NFT holdings.

### Get NFT Floor Price V2

**Slug:** `ALCHEMY_GET_FLOOR_PRICE_V2`

Tool to retrieve the floor price of an NFT collection from multiple marketplaces. Use when you need to check the current floor price for ERC721 or ERC1155 NFT collections. Returns floor prices from OpenSea and LooksRare marketplaces, including price currency, collection URLs, and retrieval timestamps.

### Get NFT Floor Price

**Slug:** `ALCHEMY_GET_FLOOR_PRICE_V3`

Tool to get the floor price for an NFT collection across multiple marketplaces (OpenSea, LooksRare, etc). Use when you need to check the current floor price of an NFT collection or compare prices across different marketplaces. Returns floor price data including price, currency, collection URL, and timestamp of when the price was retrieved.

### Get Historical Token Prices

**Slug:** `ALCHEMY_GET_HISTORICAL_PRICES`

Retrieves historical price data for a token over a specified time range with configurable intervals. Identify the token either by symbol (e.g., ETH, BTC) or by network and contract address. Use this to build price charts, analyze price trends, calculate historical returns, or display historical price information in your application. Important: Provide either symbol OR both network and address (not both methods simultaneously). Time range is specified with start_time and end_time (Unix timestamps or ISO 8601 strings). The interval parameter controls data point granularity (5m, 1h, or 1d).

### Get NFT Contracts By Address

**Slug:** `ALCHEMY_GET_NFT_CONTRACTS_BY_ADDRESS`

Tool to retrieve NFT contracts associated with one or more wallet addresses across multiple blockchain networks. Use when you need to discover which NFT collections a wallet owns tokens from, across networks like Ethereum, Base, Polygon, Arbitrum, and Optimism. Returns contract details including metadata, spam classification, and OpenSea data.

### Get NFT Metadata

**Slug:** `ALCHEMY_GET_NFT_METADATA`

Tool to retrieve comprehensive metadata for a specific NFT, including contract details, media URLs, attributes, ownership info, and OpenSea data. Use when you need detailed information about a particular NFT token, such as its image, traits, description, or contract metadata.

### Get NFT Metadata Batch

**Slug:** `ALCHEMY_GET_NFT_METADATA_BATCH`

Tool to retrieve metadata for multiple NFTs in a single request (up to 100 NFTs), including contract details, media URLs, attributes, and collection data. Use when you need detailed information about multiple NFT tokens efficiently. More efficient than making individual calls for each NFT.

### Get NFT Sales

**Slug:** `ALCHEMY_GET_NFT_SALES`

Retrieves historical NFT sales data for a specific collection across multiple on-chain marketplaces. This tool queries on-chain NFT sales from marketplaces including Seaport, Wyvern (OpenSea v1), LooksRare, X2Y2, Blur, and CryptoPunks. Returns detailed sale information including buyer/seller addresses, sale prices, fees (seller, protocol, and royalty), and transaction details. Use cases: - Track sales activity for specific NFT collections - Analyze historical price trends and market data - Monitor recent transactions for collections - Filter sales by marketplace or block range - Retrieve fee structures for different marketplaces Note: Results are paginated. Use the returned pageKey to fetch additional results if available.

### Get NFT Sales V3

**Slug:** `ALCHEMY_GET_NFT_SALES_V3`

Retrieves NFT sales that have occurred through on-chain marketplaces using Alchemy's v3 API. Supports Ethereum (Seaport, Wyvern, X2Y2, Blur, LooksRare, Cryptopunks), Polygon (Seaport), and Optimism (Seaport) mainnets. Use this to track NFT sales activity, analyze market trends, monitor specific collections or tokens, and gather comprehensive sales data including prices, fees, and transaction details. Supports flexible filtering by block range, marketplace, contract, token, buyer, seller, and taker role.

### Get NFTs for Collection V2

**Slug:** `ALCHEMY_GET_NF_TS_FOR_COLLECTION_V2`

Tool to retrieve NFTs for a collection by contract address or OpenSea slug. Use when you need to list all NFTs in an NFT collection with optional metadata. Supports pagination for large collections.

### Get NFTs for Collection V3

**Slug:** `ALCHEMY_GET_NF_TS_FOR_COLLECTION_V3`

Retrieves all NFTs in a collection using OpenSea collection slug or contract address. Use when you need to fetch NFTs by collection name rather than contract address. Similar to getNFTsForContract but uses collection slug for easier querying. Supports pagination for large collections.

### Get NFTs for Contract

**Slug:** `ALCHEMY_GET_NF_TS_FOR_CONTRACT`

Retrieves all NFTs for a given NFT contract address. Supports both ERC721 and ERC1155 token standards. Returns detailed NFT data including token IDs, metadata, images, and attributes. Use this to analyze NFT collections, build marketplace features, track collection holdings, or create analytics dashboards. Supports pagination to handle large collections efficiently (returns up to 100 NFTs per request).

### Get NFTs for Owner

**Slug:** `ALCHEMY_GET_NF_TS_FOR_OWNER`

Tool to get all NFTs currently owned by a given address. Supports ERC721 and ERC1155 tokens on Ethereum and L2s including Polygon, Arbitrum, Optimism, Base. Use when you need to retrieve NFT holdings for an address with optional metadata.

### Get Owners for Collection

**Slug:** `ALCHEMY_GET_OWNERS_FOR_COLLECTION`

Tool to retrieve all owner addresses for a given NFT collection contract. Use when you need to analyze NFT ownership distribution, find all holders of a collection, or build ownership analytics for ERC721 and ERC1155 contracts. Optionally returns token balances per owner.

### Get Owners for Contract

**Slug:** `ALCHEMY_GET_OWNERS_FOR_CONTRACT`

Tool to get all owners of NFTs in a contract with optional token balances. Use when you need to analyze NFT holder distribution, prepare airdrops, or identify token owners for specific collections.

### Get NFT Owners

**Slug:** `ALCHEMY_GET_OWNERS_FOR_NFT`

This tool retrieves the owner(s) for a specific NFT token, supporting both ERC721 and ERC1155 tokens on Ethereum and several Layer 2 chains such as Polygon, Arbitrum, Optimism, and Base. It requires the contract address and tokenId, and returns a list of owner addresses along with an optional pagination key for further results.

### Get NFT Owners (v3)

**Slug:** `ALCHEMY_GET_OWNERS_FOR_NFTV3`

Tool to retrieve all owners for a specific NFT using Alchemy's v3 API. For ERC-721 tokens returns single owner, for ERC-1155 tokens returns all owners with quantities. Use when you need to identify current ownership of an NFT token.

### Get Portfolio NFTs By Address

**Slug:** `ALCHEMY_GET_PORTFOLIO_NF_TS_BY_ADDRESS`

Tool to fetch NFTs owned by multiple wallet addresses across different blockchain networks. Returns comprehensive NFT metadata including contract details, images, attributes, and ownership information. Use when you need to retrieve NFT portfolio data for wallets across multiple chains.

### Get Token Prices By Address

**Slug:** `ALCHEMY_GET_PRICES_BY_ADDRESS`

Retrieves current token prices for specified contract addresses across multiple networks. Uses DEX (Decentralized Exchange) data for on-chain tokens to provide real-time pricing. Use this when you need to: - Get current USD prices for specific token contracts - Price tokens across multiple networks (Ethereum, Polygon, Arbitrum, etc.) - Build portfolio valuation or price tracking features - Convert token amounts to fiat currency values Supports up to 25 token addresses per request and up to 3 different networks. Returns prices even if some tokens fail (with error field set for failed ones).

### Get Token Prices By Symbol

**Slug:** `ALCHEMY_GET_PRICES_BY_SYMBOL`

Tool to get current token prices by symbol (e.g., ETH, USDC, BTC) using aggregated CEX and DEX data. Use when you need real-time cryptocurrency prices in USD or other currencies. Supports up to 25 symbols per request. Note: Response succeeds even if some tokens are missing - check the error field in each result item.

### Get Token Balances

**Slug:** `ALCHEMY_GET_TOKEN_BALANCES`

This tool retrieves ERC20 token balances for a specified Ethereum address. It can either return balances for all tokens an address has ever interacted with or for a specific set of token contract addresses. It is useful for checking token balances for wallets, monitoring ERC20 token holdings, portfolio tracking, and DeFi applications.

### Get Token Balances By Address

**Slug:** `ALCHEMY_GET_TOKEN_BALANCES_BY_ADDRESS`

Tool to get token balances for wallet addresses across multiple networks using Alchemy's Portfolio API. Use when you need lightweight balance checks for one or more addresses without full token metadata. Supports up to 3 address/network pairs per request with pagination for large result sets.

### Get Token Metadata

**Slug:** `ALCHEMY_GET_TOKEN_METADATA`

Retrieves metadata for an ERC-20 token on Ethereum mainnet, including its name, symbol, decimals, and logo URL. This information is essential for displaying token details in user interfaces, calculating token amounts (using decimals), and showing token branding. Use this when you need to: - Display token information to users (name, symbol, logo) - Convert token amounts between human-readable and contract formats (requires decimals) - Build token listings or portfolio displays - Validate or enrich token data Note: Returns empty/null values for invalid or non-token contract addresses.

### Get Token Prices By Address

**Slug:** `ALCHEMY_GET_TOKEN_PRICES_BY_ADDRESS`

Retrieves current token prices by contract address and network from decentralized exchanges (DEXes). Use when you need real-time token price data for specific contract addresses across multiple networks. Price data is aggregated from DEXes only (not CEXes) and weighted by total volume. Supports up to 25 addresses per request across maximum 3 different networks. Returns price in USD by default with timestamp. Response succeeds even if some prices are unavailable.

### Get Tokens By Address

**Slug:** `ALCHEMY_GET_TOKENS_BY_ADDRESS`

Tool to fetch fungible tokens (native, ERC-20, SPL) for multiple wallet addresses across networks. Returns comprehensive token information including balances, metadata (name, symbol, decimals, logo), and current prices. Use when you need complete token portfolio data for wallets across multiple chains (Ethereum, Polygon, Arbitrum, Base, Optimism, Solana, and 30+ EVM chains). Supports up to 2 addresses with 5 networks each per request, with pagination for large result sets.

### Get Transaction Count

**Slug:** `ALCHEMY_GET_TRANSACTION_COUNT`

This tool retrieves the number of transactions sent from a specific address (also known as the nonce). It uses the eth_getTransactionCount endpoint to return the transaction count for an address at a specified block tag (latest, pending, earliest, or a HEX block number), which is essential for determining the nonce for subsequent transactions.

### Get Transactions History By Address

**Slug:** `ALCHEMY_GET_TRANSACTIONS_HISTORY_BY_ADDRESS`

Tool to get transaction history for wallet addresses across multiple networks using Alchemy's Data API. Use when you need to retrieve historical transactions with detailed metadata including logs and internal transactions. Supports pagination for large result sets with a maximum of 50 transactions per request.

### Invalidate NFT Contract

**Slug:** `ALCHEMY_INVALIDATE_CONTRACT_V2`

Tool to invalidate an NFT contract in Alchemy's cache. Use this when you need to refresh the metadata or status of an NFT contract, marking it for re-indexing. Returns the number of tokens invalidated and whether the operation succeeded.

### Invalidate NFT Contract Cache

**Slug:** `ALCHEMY_INVALIDATE_CONTRACT_V3`

Tool to invalidate the cached metadata for an NFT contract. Use when you need to force a refresh of stale or outdated NFT metadata on the next request. This is useful after contract updates or when metadata changes are expected.

### Check If NFT Is Airdrop

**Slug:** `ALCHEMY_IS_AIRDROP`

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.

### Check If NFT Is Airdrop

**Slug:** `ALCHEMY_IS_AIRDROP_NFT`

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.

### Check Collection Ownership

**Slug:** `ALCHEMY_IS_HOLDER_OF_COLLECTION`

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.

### Check NFT Holder Status

**Slug:** `ALCHEMY_IS_HOLDER_OF_CONTRACT`

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.

### Check if Contract is Spam

**Slug:** `ALCHEMY_IS_SPAM_CONTRACT`

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.

### Check if Contract is Spam (V3)

**Slug:** `ALCHEMY_IS_SPAM_CONTRACT_V3`

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.

### Search Contract Metadata

**Slug:** `ALCHEMY_SEARCH_CONTRACT_METADATA`

Tool to search for NFT contracts by keyword across contract metadata. Use when you need to find NFT collections by name, symbol, or other metadata fields. Returns matching contracts with full metadata including OpenSea marketplace data.

### Search NFT Contract Metadata

**Slug:** `ALCHEMY_SEARCH_CONTRACT_METADATA_V3`

Tool to search for keywords across metadata of all ERC-721 and ERC-1155 smart contracts. Use when you need to find NFT collections by name, symbol, or description keywords. Returns contract addresses, names, symbols, token types, deployer info, and OpenSea metadata for matching collections.

### Summarize NFT Attributes

**Slug:** `ALCHEMY_SUMMARIZE_NFT_ATTRIBUTES`

Retrieves a comprehensive summary of all attributes and traits for NFTs in a collection, including trait counts and distribution statistics. Use this to analyze rarity, understand collection composition, or build trait filters for NFT marketplaces and analytics dashboards.
