What Cometh does

Cometh is a Paris-based DeFi infrastructure provider founded in 2020 that built Banking-as-a-Service (BaaS) infrastructure for the European market, enabling fintechs, asset managers, and corporates to launch regulated crypto services through a unified API. Its core offering is Cometh Connect, a white-labeled 4337 Wallet SDK providing ERC-4337 account abstraction with biometric (passkey) authentication, gasless transactions via a Paymaster, and social account recovery, built on Gnosis Safe infrastructure that safeguards over $70 billion in assets. Supporting products include a Bundler API (ERC-4337 mempool management), a Session Keys SDK (ERC-7579-compliant permissioned sessions), React hooks, and native Mobile SDKs co-developed with Worldcoin.

The company's revenue model centers on API/SDK licensing fees (subscription-recurring) for advanced features such as the Cometh Passkey signer, supplemented by usage-based billing for Paymaster gas sponsorship invoiced monthly based on actual gas consumed. Go-to-market is API-first, targeting enterprise clients directly while leveraging channel partners such as Everstake for institutional staking infrastructure. Cometh operated as a MiCA-licensed custodian and registered Digital Asset Service Provider (DASP) in the EU, with ecosystem validation including grants from the Ethereum Foundation, Arbitrum, Safe, and Optimism, and ETHDenver/ETHGlobal hackathon wins. In May 2026, Cometh was acquired by Kaiko, a digital asset market data and analytics provider, to scale MiCA-regulated on-chain data infrastructure; the acquisition ended Cometh's independent operations while integrating its smart-contract engineering capabilities into Kaiko's institutional data platform.

Name

Cometh

Legal name

Cometh

Website

https://cometh.io

Company type

Private

Founded year

2020

Operating status

Acquired

Headcount range

11–50 employees

Short description

Cometh, a Paris-based DeFi infrastructure provider acquired by Kaiko in May 2026, built MiCA-compliant Banking-as-a-Service APIs and ERC-4337 smart wallet SDKs enabling EU fintechs, asset managers, and corporates to launch regulated custody, staking, trading, and payments services.

Ownership category

akta.pro rank

Product category

DeFi Infrastructure and Crypto Banking-as-a-Service

NAICS

Financial Transactions Processing, Reserve, and Clearinghouse Activities (522320), Securities and Commodity Exchanges (523210)

SIC

Finance Services (6199), Security & Commodity Brokers, Dealers, Exchanges & Services (6200)

akta.pro primary industry

Account Abstraction & Smart Wallet Tooling (AA SDKs, paymasters, session keys) (FSAPABAK)

akta.pro secondary industry

DAO Treasury, Governance & On-Chain Finance Tools (FSADAMAL)

Keywords

• DeFi infrastructure
• Banking-as-a-service
• Crypto custody
• Smart wallet SDK
• Blockchain API

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Personnel, Infrastructure, Marketing or Sales, Operations

Revenue model

1. BaaS API Access: Revenue generated through API licensing and SDK integration fees, providing access to custody, staking, trading, and payments infrastructure.
2. Paymaster/Gas Sponsorship: Monthly invoicing for gas fees covered on behalf of clients. Billed through payment method in Cometh Connect account based on actual gas consumption.
3. SDK Licensing: The Core SDK does not require API key but advanced features including Cometh Passkey signer require licensing. Legacy SDK users must migrate to new 4337 licensing model.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

Cometh provides DeFi-native Banking-as-a-Service infrastructure that lets fintechs, asset managers, and corporates integrate regulated crypto services (custody, staking, trading, and payments) through a single API. Its core product is Cometh Connect, a white-labeled 4337 Wallet SDK built on ERC-4337 account abstraction and Gnosis Safe, supported by Bundler API, Paymaster API, Session Keys SDK, React Hooks, and Mobile SDKs. The platform is MiCA-aligned and registered as a DASP for the European market.

Product overview

Cometh provides DeFi-native Banking-as-a-Service (BaaS) infrastructure for Europe, enabling fintechs, asset managers, and corporates to launch regulated crypto services via unified API and smart wallet infrastructure. The product portfolio centers on Cometh Connect (4337 Wallet SDK) as the core white-labeled account abstraction solution built on ERC4337 and Gnosis Safe, supporting biometric-controlled smart wallets with gasless transactions. Supporting products include Bundler API and Paymaster API for ERC-4337 infrastructure, SDK Session Keys for ERC-7579 compliant permissioned session management, React Hooks and Mobile SDKs for multi-platform integration, and SDK Core for essential smart account functions. Services layer includes regulated custody, staking and yield, trading/liquidity access, and payments/settlement, all operating within a MiCA-aligned regulatory perimeter. The company was acquired by Kaiko in May 2026 to scale MiCA-regulated on-chain data infrastructure.

Differentiator

Problem solved

Functional benefit

Products and services

• Cometh Connect (4337 Wallet SDK) White-labeled Web/TypeScript SDK enabling applications to leverage ERC-4337 account abstraction with smart wallets controlled via biometrics (passkeys). Provides Web2 convenience (biometric signatures, passwordless onboarding, gasless transactions, account recovery) on Web3 rails, built on Gnosis Safe infrastructure. Targeted at fintechs and Web3 product teams integrating compliant crypto wallets.
• Bundler API ERC-4337 compliant bundler service that manages a mempool of User Operations, aggregates them, and submits them to Entry Point Contracts for on-chain execution. Supports standard JSON-RPC methods (eth_sendUserOperation, eth_estimateUserOperationGas, eth_getUserOperationByHash, eth_getUserOperationReceipt, eth_supportedEntryPoints) across multiple EVM chains. For developers building account abstraction applications.
• Paymaster API Smart contract service enabling third parties (businesses) to sponsor gas fees for user transactions, allowing end users to interact with blockchain without paying gas. Supports pm_sponsorUserOperation and pm_supportedEntryPoints methods, with monthly invoicing based on actual gas consumption and chain-agnostic configurable sponsored addresses per chain. For businesses wanting to deliver gasless onboarding to their users.
• SDK Session Keys SDK for managing ERC-7579-compliant Session Keys, enabling registration, revocation, and configuration of granular permissions for session keys. Operates independently of Connect Core and is compatible with other account abstraction SDKs supporting Safe Accounts. For developers needing permissioned session-based execution of smart account actions.
• SDK Core Core version of the Cometh Connect SDK 4337 providing essential functions for managing smart accounts. Supports various authentication providers (EOA, Magic, Web3Auth, Turnkey, Privy) without requiring an API key, and includes capabilities for sending transactions, batching transactions, signing messages, and encoding contract calls. For developers building smart account integrations without a license dependency.
• Custody as a Service Regulated or self-custodial digital asset management service enabling fintechs and institutions to secure and manage digital assets within Cometh's MiCA-aligned regulatory perimeter. Provides audit-ready custody for compliance-focused clients.
• Staking and Yield On-chain staking and DeFi yield strategies service that enables optimization of returns for enterprise clients. Integrated with Everstake's institutional-grade staking infrastructure to enable fiat-to-staking conversion and back-to-fiat settlement for EU institutions.
• Trading and Liquidity Access Digital asset trading and settlements service providing secure, instant transactions and cross-chain trading through Cometh's chain abstraction API. Enables USDC swaps (e.g., Worldcoin) and other digital asset trading flows with chain abstraction.
• Payments and Settlement Service bridging traditional finance with crypto-native payments. Enables fiat deposits via dedicated IBAN, conversion to eligible crypto assets, and settlement of rewards back to fiat, all within Cometh's regulated custody ecosystem.
• Louis.finance Live showcase application built by Cometh to demonstrate compliant digital asset treasury management, instant settlement and payments, and seamless yield generation for enterprises, powered by Cometh's underlying infrastructure.

Quantifiable outcome

• Smart wallets power over $70B in assets through Gnosis Safe infrastructure
• +1 more outcomes

Named customers8 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration7 records

Feature8 records

Partnerships

Eight partnerships are on record, tiered core and flagship.

• KaikocoreStrategic or Co-development Partner · 19 May 2026Kaiko acquired Cometh to expand its on-chain data infrastructure capabilities and develop MiCA-compliant on-chain products and indices. The acquisition integrates Cometh's expertise in smart contract engineering into Kaiko's digital asset market data and analytics platform.
• EverstakecoreTechnology or Integration · 7 January 2026Partnership enables institutional and corporate clients across the EU to convert fiat deposits into crypto staking rewards and back into fiat through a compliant, streamlined process. Integrates Everstake's institutional-grade staking infrastructure into Cometh's regulated custody ecosystem.
• Ethereum FoundationflagshipStrategic or Co-development PartnerEcosystem grant recipient for advancing account abstraction, passkeys, and DeFi automation technologies.
• ArbitrumflagshipStrategic or Co-development PartnerEcosystem grant recipient supporting development of account abstraction and DeFi infrastructure on Arbitrum.
• SafeflagshipStrategic or Co-development PartnerEcosystem grant recipient and contributor to smart contract wallet development using Safe infrastructure.
• OptimismflagshipStrategic or Co-development PartnerEcosystem grant recipient supporting DeFi infrastructure development on Optimism.
• Gnosis SafecoreTechnology or IntegrationCometh's smart wallets are built on Gnosis Safe infrastructure, which holds over $70B in assets. Technical integration with Safe 1.4.1 and ERC-7579 modules.
• WagmicoreTechnology or IntegrationCometh SDK integrates with Wagmi library for React-based Ethereum application development, enabling seamless wallet connection and smart account usage.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• BitGo: BitGo provides regulated digital asset custody, staking, and trading infrastructure for institutions and fintechs, overlapping with Cometh's regulated custody, staking, and payments services at the institutional end of the market.
• Fireblocks: Fireblocks is an established institutional digital asset custody and BaaS platform offering custody, staking, payments, and trading for banks and fintechs — the broad incumbent in the same BaaS/custody category Cometh targets under MiCA.

Direct peers

• Magic Labs: Magic offers embedded wallets with social login and gas sponsorship via AA wallets, integrating directly with Cometh Connect but also competing as a standalone signer option. Same developer audience and overlapping passkey/social login AA proposition.
• Safe (Gnosis Safe): Safe is the underlying smart contract wallet infrastructure on which Cometh is built; it also publishes its own SDK and competes at the smart-account platform layer. Direct technology overlap (ERC-4337, Safe Accounts) and shared institutional custody use cases.
• Web3Auth: Web3Auth provides MPC-based social login wallets that integrate with Cometh Connect as a signer and also compete as an embedded AA wallet alternative. Same target customer (Web3 app developers) and overlapping key-management and AA tooling.
• Turnkey: Turnkey offers developer API and security policy engine for custodial key infrastructure, integrating with Cometh Connect as a signer and competing in the embedded custody/AA wallet stack. Comparable target market of crypto-native developers building AA wallets.
• Biconomy: Biconomy provides ERC-4337 paymaster, bundler, and smart account infrastructure directly overlapping Cometh's Bundler and Paymaster APIs. Same core offering (AA relayer and gas sponsorship) for Web3 application developers.
• ZeroDev: ZeroDev offers a kernel-based smart account SDK, paymaster, and bundler infrastructure on ERC-4337, directly overlapping Cometh's Bundler/Paymaster/Session Keys stack. Same developer audience and AA feature set.
• Particle Network: Particle Network provides modular AA wallet infrastructure (smart accounts, paymaster, chain abstraction) competing with Cometh's Connect SDK on developer-facing AA tooling. Comparable product scope and same Web3 developer target market.
• Privy: Privy provides embedded wallets and smart account infrastructure for developers, competing directly with Cometh Connect on embedded AA wallet experiences with social login. Highly comparable target market (dApp and fintech developers) and overlapping ERC-4337/smart account feature set.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/cometh

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds2 records

Investors8 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Cometh