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New projects
A paragraph about the problem is enough to start. We reply within two working days, usually with questions rather than a quote.
Web3 · Service Account abstraction and smart wallet development
ERC-4337 smart accounts with passkey sign-in, sponsored gas, session keys and tested recovery, so users never see a seed phrase or a gas prompt.
In short
Account abstraction replaces a wallet controlled by a single private key with a smart contract account that can have its own rules: sign in with a passkey, let an app pay the gas, approve several actions at once, and recover access without a seed phrase. ERC-4337 is the standard that makes this work on Ethereum-compatible networks. We build the accounts, the gas sponsorship and the recovery flow.
- How to engage
- Product build, Dedicated engineering pod
- Practice
- Web3
Signs this is the right service
- New users drop out at "write down these twelve words".
- Users need to hold a network's token just to pay for their first action.
- One task takes four separate signature prompts.
- There is no way back in for a user who loses their device.
What you get
Smart accounts
ERC-4337 accounts with batched transactions, spending limits and session keys, so a user approves an intent once.
Passkey sign-in
WebAuthn-based onboarding with two credentials registered up front, because a single passkey is tied to one device ecosystem.
Sponsored gas
Paymaster policies that define who is sponsored, for which actions and up to what limit, enforced on the server.
Recovery
Guardian or social recovery with a time delay, designed and then rehearsed with real users before launch.
Bundler and monitoring
Bundler infrastructure or a managed provider, with alerts on failed operations and sponsorship spend.
The process
- 01
Map the user journey
Every point where a user signs, pays or could be locked out.
- 02
Choose the account and providers
Account implementation, bundler and paymaster, selected for the networks you need.
- 03
Build and test recovery first
The flow people use while panicking gets tested as often as sign-up.
- 04
Launch with limits
Sponsorship ceilings and rate limits in place before real traffic.
ERC-4337WebAuthnPasskeysPaymastersBundlersSolidityTypeScript
Account abstraction & smart wallets: common questions
Do users still need a seed phrase?
- No. With a passkey the key lives in the device's secure hardware and is unlocked with a fingerprint or face. Recovery is handled by a second credential or by guardians.
Who pays for gas?
- Whoever your policy says: you can sponsor every action, only the first few, or only certain types, with a ceiling per user. Users can also pay in a stablecoin instead of the network token.
Is a smart account custodial?
- Not by default. The user holds the credential that controls the account. Custody is a design choice we make with you and document, with its trade-offs.
Does this work on layer-2 networks?
- Yes. ERC-4337 is deployed on the main layer-2 rollups, where lower fees make sponsoring gas practical.
06 / Let’s build
Bring us the difficult problem.
02
Careers
Engineers, designers and researchers who like systems that are hard to get right. Send something you built and what you would change about it now.
03
Studio
Based in India and working remotely, with overlap hours agreed up front so your team always has a time to reach us.
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Read
Guides on AI agents, RAG, MCP, tokenization and chain abstraction, written by the engineers who build them.