Cometh Documentation

What is Cometh?

Cometh is building the DeFi-native Banking-as-a-Service (BaaS) infrastructure for Europe.

Our platform enables fintechs, asset managers, and corporates to launch regulated crypto services—custody, staking, swaps, and more via a unified API and smart wallet infrastructure. We combine a fully composable tech stack (Crosschain Safe, ERC-4337) with a MiCA-aligned regulatory perimeter to deliver a modular, secure, and scalable foundation for the next generation of financial services.

If you want to see what our infrastructure enables, try Louis.finance, our live showcase for compliant stablecoin yield solutions.

The full documentation for the DeFi-as-a-Service API layer is coming soon.

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Cometh Connect (4337 Wallet SDK)

The Cometh Connect SDK is already fully documented and available.

Cometh Connect is a white-labeled SDK (Web/TS) that enables applications to leverage account abstraction and ERC4337 and provide their users a smart wallet controlled with biometrics. It is built on the latest stack available (viem/wagmi/bun) for performance.

Coupled with a web2 authentication system (or standalone to stay anonymous), users are onboarded with web2 convenience and web3 security: biometric signatures (passwordless, non custodial), gasless transactions, account recovery, etc.

Smart wallets deployed with Connect are based on industry standards that power millions of identities (WebAuthn) and hold wallets with >70b$ (Gnosis Safe).