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    View API References, guides, and tutorials for Ethereum, Polygon, Optimism, Arbitrum, Solana and Astar.

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    NFT API Quickstart

    Easiest way to get NFT data from ownership to sales to metadata and more.

    Ethereum API Quickstart

    How to get started building on Ethereum and using the JSON-RPC API

    SDK Quickstart

    The easiest way to connect your dApp to the blockchain using JavaScript.

    alchemy_pending Transactions

    Subscribe to full transaction objects or hashes that are pending based on provided filters.

    What are payable functions in Solidity?

    Learn how payable functions work in Solidity.

    How to get all NFTs owned by an address

    Query all NFTs owned by a provided address in one line of code.

    Learn how to build in web3

    Alchemy University

    Ethereum Developer Bootcamp and JavaScript Fundamentals Courses, for free.

    Create Web3 Dapp

    Create a full-stack dApp in ~4 mins, right from the command-line.

    View all tutorials

    Web3 tutorials for all topics: NFTs, Solidity, DeFI, transactions, and more!

    API references for all chains

    Including free Archive data on all chains and testnets.

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    Use case APIs

    APIs built to optimize your code and make life as a developer way easier.

    NFT API

    Get all the NFT data you need with this suite of endpoints

    Transact

    Send transactions 7.9x faster

    Token API

    Get token valuable information to display to users

    Transfers API

    Get historical transactions for any address or contract

    Notify API

    Webhooks for transaction activity

    Trace API

    Deep insights for transaction processing

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