Dapp StoreEthereumWeb3 WalletsSmart Contract Wallets
Web3 30 NomineesSmart Contract WalletsMultisig WalletsCrypto Portfolio DashboardsNFT Marketplaces


Your forever wallet.

Ethereum Logo

What is Castle?

Castle is a smart contract wallet for NFT collectors. Our product allows anyone to easily create and manage a shared or personal vault using multi-signature wallet technology. Individuals can use Castle as a vault to securely store assets, or use it as a trading wallet to get powerful features like advanced portfolio tracking and batch transactions. Groups can use Castle as a shared wallet to pool funds together, buy NFTs, manage a shared treasury, and split profits. Some key features of Castle include: (1.) Native integrations with OpenSea, Gem.xyz and Genie.xyz which aggregates NFTs from a variety of marketplaces, allowing you to buy or sell multiple NFTs in a single transaction, sweep the floor, or list multiple NFTs all at once; (2.) Purchase NFTs and list single or multiple NFTs in one transaction via Castle's native marketplace; (3.) Track portfolio data such as NFT floor prices, purchase prices, and token balances; and (4.) Team up with friends to create a group, invite people, contribute funds, and manage ownership settings.

Start Building with Alchemy's ERC-4337 Bundler and Gas Manager
Get your API key
Is this your project?
Request edits

Best Smart Contract Wallets

Discover more web3 applications and developer tools.

See all dapps
Section background image

Build blockchain magic

Alchemy combines the most powerful web3 developer products and tools with resources, community and legendary support.

Get your API key