Account abstraction that makes clunky crypto feel smooth
Deploy ERC-4337 smart accounts with gas sponsorship, session keys, and transaction batching. Support EIP-7702 for seamless EOA upgrades.
No credit card required • Free testnet accounts
Over 10 million transactions by 50+ customers.
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Users never need native tokens
Sponsor gas for your users with configurable policies. They interact with your app without ever holding ETH—just like a normal fintech experience.
View docsProgrammable wallets with ERC-4337 & EIP-7702
Transaction batching, social recovery, and session keys built-in. Upgrade existing EOAs or deploy new smart accounts—same infrastructure, your choice.
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Higher is better (normalized to 100%)
Gas Sponsorship
Sponsor gas for your users with configurable policies. Users never need to hold native tokens.
Transaction Batching
Combine multiple operations into a single transaction for better UX and lower costs.
Permissions
Grant temporary, scoped permissions to eliminate signing popups during gameplay or app usage.
Smart Accounts
Programmable accounts with in Ethereum and Solana for advanced features like social recovery.
Nonce management
Manage nonces for your wallets automatically.
Multisig and social recovery
Manage multisig and social recovery for your wallets.
From developers that use Openfort
"Game studio reaches 150K players with gasless transactions"
From launch to 150,000 active players using session keys for seamless in-game transactions without signing popups.
Moonlit Games
"GFAL increases marketplace engagement by 3x with gas sponsorship"
Sponsored gas for all marketplace transactions simplified the user experience and drove 3x more engagement.
GFAL
"Gaimin leverages smart accounts for best-in-class UX"
Openfort smart wallets have been instrumental to offer gasless transactions and batched operations to their users.
Gaimin
"Game studio reaches 150K players with gasless transactions"
From launch to 150,000 active players using session keys for seamless in-game transactions without signing popups.
Moonlit Games
"GFAL increases marketplace engagement by 3x with gas sponsorship"
Sponsored gas for all marketplace transactions simplified the user experience and drove 3x more engagement.
GFAL
"Gaimin leverages smart accounts for best-in-class UX"
Openfort smart wallets have been instrumental to offer gasless transactions and batched operations to their users.
Gaimin
Multi-platform SDKs
React, React Native, Unity, and server-side SDKs for any platform.
Dedicated Support
Work directly with our engineering team to ship your AA integration.
Flexible Architecture
Use our hosted infrastructure or self-host with OpenSigner for full control.
Frequently Asked Questions
Your question not answered here?
Account abstraction (ERC-4337) replaces traditional externally owned accounts (EOAs) with programmable smart accounts. This enables gas sponsorship (users don't need native tokens), session keys (no signing popups), transaction batching (multiple operations in one click), and social recovery. Openfort provides the full infrastructure—smart accounts, bundler, and paymaster—so you can build Web3 apps that feel like Web2.
ERC-4337 introduces smart accounts as a new account type with a separate mempool and bundler infrastructure. EIP-7702 (formerly EIP-3074) lets existing EOAs temporarily delegate to smart contract code, getting AA features without deploying a new account or migrating assets. Openfort supports both standards, so you can choose the right approach for your users—new smart accounts for new users, or EIP-7702 upgrades for existing wallet holders.
Openfort paymasters let you sponsor gas for your users based on configurable policies. You can sponsor all transactions, only specific contracts, set daily/monthly limits per user, or require users to pay in ERC-20 tokens. The paymaster handles gas payment on-chain while your policies run off-chain for flexibility. This means users can interact with your app without ever holding ETH or other native tokens.
Session keys are temporary, scoped permissions granted to your app. Instead of asking users to sign every transaction, you request a session key upfront with specific limits (e.g., "play this game for 24 hours, max 100 transactions, only these contracts"). Your app then uses the session key to submit transactions on behalf of the user within those bounds—no more popups interrupting gameplay or purchases.
Yes, in two ways. First, Openfort smart accounts can be controlled by an EOA signer, so MetaMask users sign transactions that the smart account executes (getting gas sponsorship and batching). Second, with EIP-7702 support, EOAs can directly opt-in to smart account features without changing addresses. This lets you serve both embedded wallet users and existing wallet holders with the same AA infrastructure.
Openfort supports 25+ EVM networks including Ethereum, Polygon, Arbitrum, Optimism, Base, Avalanche, BNB Chain, and more. Our bundler and paymaster infrastructure is deployed natively on each chain for optimal performance. We regularly add new chains—check our documentation for the full list or contact us for specific chain requests.