Alchemy

Alchemy is a developer platform for building blockchain applications, often described as the cloud infrastructure layer for web3 because it runs the nodes, indexing, and data services that decentralized apps depend on so engineering teams do not have to operate that infrastructure themselves. Its core is a set of reliable, scalable RPC endpoints for reading from and writing to many blockchains, including Ethereum and its major layer-two networks, Solana, and others, with enhanced APIs on top for common needs like fetching a wallet's token balances, transaction history, and NFT holdings without running an indexer. Around that, Alchemy provides webhooks and monitoring for on-chain events, SDKs, a smart-wallet and account-abstraction stack for building consumer-friendly onboarding without seed phrases, tooling for deploying rollups, and developer dashboards with usage analytics and debugging tools. Founded in 2017, Alchemy powers a large share of active decentralized applications and wallets, processes a very high volume of on-chain transactions, and has raised funding at a valuation around ten billion dollars. It is aimed at web3 developers and companies of all sizes. Alchemy offers a free tier with a monthly compute allowance, and paid plans priced by usage that add higher limits, more products, and support.