Cometh

• Name: Cometh
• URL: https://cometh.io/
• Category: regulated DeFi infrastructure / smart-wallet and account-abstraction stack / staking-trading-payments API
• Tags: ethereum-ecosystem
• Summary: Cometh is mostly a Safe-shaped business stack for Europe: smart wallets, sponsored execution, signer middleware, and a regulated-services wrapper sold together. The broad DeFi infrastructure pitch matters less than that operator bundle.
• What it does:
  • Markets a single integration for businesses that want custody, staking, trading, and payment rails under one API and regulatory wrapper
  • Ships Cometh Connect, a white-label smart-wallet SDK built around biometrics, ERC-4337 account abstraction, gasless flows, account recovery, and session-key UX
  • Operates Bundler and Paymaster APIs for ERC-4337 UserOperations, gas estimation/submission, and transaction sponsorship across supported EVM networks
  • Provides a core SDK for smart-account management that supports multiple signer/authentication paths including EOA, Magic, Web3Auth, Turnkey, and Privy
  • Maintains public SDK repositories spanning web, React, and mobile account-abstraction integrations, with Safe-based smart-account infrastructure visible in the docs and repos
• Key claims:
  • The homepage positions Cometh as “The DeFi Infrastructure for Businesses,” emphasizing a unified API for custody, staking, trading, and payments plus a regulated, audit-ready posture
  • Official docs describe Cometh as building “DeFi-native Banking-as-a-Service (BaaS) infrastructure for Europe” and say the stack combines Crosschain Safe / ERC-4337 primitives with a MiCA-aligned regulatory perimeter
  • The documentation currently has the deepest public detail around Cometh Connect, SDK Core, Bundler API, and Paymaster API, even while the broader DeFi-as-a-Service API layer is still framed as “coming soon”
  • Bundler docs show Cometh operating ERC-4337 infrastructure for UserOperation submission, gas estimation, receipt lookup, and supported entry points
  • Paymaster docs show Cometh offering gas sponsorship workflows tied to sponsored contract addresses and monthly billing, which makes the platform more than a wallet SDK alone
  • The public GitHub organization reinforces that Cometh is an active account-abstraction infrastructure vendor, with repos for Connect SDK variants, keystore components, and mobile SDKs
• Whitepaper: No classic whitepaper or litepaper was found during this pass. The strongest primary materials were Cometh’s official homepage, docs portal, SDK/Bundler/Paymaster documentation, and public GitHub repositories; see ../whitepapers/cometh-primary-sources-2026-04-25.md.
• Sources:
  • https://cometh.io/
  • https://docs.cometh.io/
  • https://docs.cometh.io/sdk-core.md
  • https://docs.cometh.io/bundler/bundler-api.md
  • https://docs.cometh.io/paymaster/paymaster-api.md
  • https://github.com/cometh-hq
  • https://github.com/cometh-hq/connect-sdk-4337

Internal linkages

• Best anchors: safe, sequence, and turnkey.

Governance / control risk

• The leverage sits in signer and auth integrations, bundler admission, sponsorship policy, SDK defaults, billing, and the regulated wrapper around the stack.

• Read Cometh as wallet operations and transaction policy sold inside a business-services package, not as a new account primitive.

• Last reviewed: 2026-05-29 UTC