Smart Wallets Overview
Secure non-custodial programmable wallets
For general information about the wallet product, see the introduction. This guide will focus on the features specific to the non-custodial wallet.
With Crossmint’s Smart Wallet SDK, you have access to an enterprise-grade, non-custodial, and embedded smart wallets solution, ready for onboarding the masses onto web3.
Your users will experience a seamless UX thanks to features like gas fee sponsoring, passkey signers (eliminating the need for passphrases), and silent transaction signing. And as a developer, you get a fully managed wallet solution - with one simple vendor integration, you get access to 10+ services across wallets, RPCs, indexers, spam filters, and more, across a number of EVM chains today - including Base, Optimism, Astar, Polygon, Arbitrum Nova - with more being added frequently.
Moreover, building with smart wallets offers native programmability, including opt-in on-chain modules enable compliance, security and usability features. And the SDK is designed with tight integration into Crossmint’s other offerings, providing developers with powerful tools to build NFT-centric applications.
When are Smart Wallets the best fit?
- Your users need to store and interact with .
- You want to offer truly non-custodial wallets to your users with the best possible UX while ensuring you remain highly compliant with industry leading asset security.
Example use cases may include:
- Creating gas-less wallets for on-chain loyalty programs and enterprise customer activations
- Wrap Crossmint’s headless SDK within a broader infrastructure suite to build a more holistic developer platform
- On chain subscription payments, based on user-set rules
- Secure embedded wallets, with scoped transactions + smart contracts that users can interact with
- Onboarding more buyers and sellers into NFT launchpads and marketplaces
- Web3 games, which have a trading or transactional component
What’s unique about Crossmint’s Smart Wallets?
- Turnkey product: the SDK includes all the infrastructure you need, with embedded redundancy, in just a few lines of code: , managed RPCs, indexers, bundlers, paymasters, account factory, nonce management, and more, eliminating the need to tape together multiple providers and spend months making that infrastructure scalable.
- Can be connected to any website: users can connect and interact with third-party sites using Wallet Connect or Crossmint Connect.
- Highest grade security and compliance: Crossmint leverages industry leading MPC and Passkey technology to enable secure non-custodial key generation, the same technology trusted by financial institutions storing billions of dollars in assets. The SDK also offers premium add-ons like spam filters, AML and sanction screening, anomaly detection, passkeys and 2FA, and more.
- Out of the box programmability: Native plug-ins include enabling streamlined asset recovery, improved wallet security, and more. We’re continuously adding wallet plugins, reach out if there is a specific plugin you’d like to see supported.
Key Characteristics
Performance
100k wallets per hour
Throughput of 100,000+ wallets per hour.99.9% uptime
RPC and indexer redundancy across chains.Developer Experience
Start in 5 minutes
Create your first smart wallet within 5 minutes.
Managed reliability
Managed RPCs, nonce management, indexers, bundlers, paymasters, and key management.
Import modules
ERC-4337 with plugin extensibility. Add session keys, passkeys, and more.
Future-proof
Upgradable contracts so you stay on top of the latest innovations.
Programmable custody
Define custody at the asset level eg. non-custodial for ERC20s and custodial for NFTs.
Part of a broader suite
Designed to work seamlessly with the minting, token-gating, and payment tools.
User Experience
Passkeys
Allow users to access their wallets and sign transactions with Face ID and fingerprints.
No approval pop-ups
Remove confirmation requests for simple transactions, and allow users to stay signed in.
Simplify gas fees
Sponsor gas fees (or let users pay) with fiat or tokens from another network.Security
Secure key management
Industry leading MPC and Passkey security, using the same KMS securing trillions in transfers for financial institutions.
Kill Switch
Allow users to remotely switch off their wallet if anomalous activity is detected.Security add-ons
Spam filters, AML and sanction screening, and more.Smart Wallets allow users to set up compliant asset recovery mechanisms in case they lose access to their credentials.