List of Embedded Wallet projects on Optimism (2026)

Circle Wallets provides wallet-as-a-service infrastructure through REST APIs and SDKs, enabling developers to embed secure wallet functionality into applications. The platform supports multi-party computation key management, multiple authentication methods including passkeys and social logins, and Gas Station for transaction fee sponsorship across EVM-compatible blockchains, Solana, Aptos, and NEAR.

Crossmint Embedded Wallets is a wallet infrastructure product that lets developers add self-custody wallets directly into their applications. It provides smart contract wallets with a modular signer architecture, abstracting private key management, gas payments, and transaction execution behind a single API. Businesses and AI agents use it to provision wallets for end users across multiple blockchains without building custody infrastructure from scratch. Extensions such as swaps, staking, and card issuance can be layered on top of the core wallet functionality.

An SDK to upgrade EOAs to smart accounts using account abstraction (EIP‑4337, EIP‑7702). Supports ERC‑20 gas payments or dApp‑sponsored gas, embedded logins, account recovery, session keys, spending limits, and multi‑chain EVM support.

Portal Embedded Web3 Wallet is a white-labeled wallet infrastructure using TSS MPC cryptography, eliminating seed phrases through backup methods including Passkeys, cloud storage, and PIN recovery. The system provides cross-device syncing and sub-second wallet generation across mobile and web platforms.

Liminal Wallet Infrastructure is an embedded wallet platform that lets institutions provision and manage hot and cold wallets through an API rather than building custody technology in-house. It secures private keys using multi-party computation and multi-signature schemes, and automates asset transfers based on configurable policies and thresholds. Businesses use it to embed wallet functionality into their own applications while maintaining transaction screening and compliance controls across multiple blockchain networks.

Universal Accounts is chain abstraction infrastructure that gives users a single account and unified balance across multiple blockchains without bridging. It routes transactions through Universal Liquidity, automatically selecting from a set of high-liquidity primary assets to execute purchases or gas payments on any supported chain, even when the user holds no assets there. The system uses an account abstraction implementation and, for existing wallets, an account upgrade standard to avoid migrating funds. Developers integrate the software development kit to make applications chain-agnostic, pairing it with a separate signer such as social login or an external wallet.

MPC Wallet as a Service is a developer-focused service for building custodial wallets secured by multi-party computation. It provides APIs and SDKs for batch address generation, automated deposits and withdrawals with an API Co-Signer, configurable approval flows, reconciliation, and token multisig management. The service includes automatic gas fuelling and sweeping, and integrates across mobile, web console, browser extension, and API access points for businesses building wallet infrastructure across multiple blockchains.

B2BinPay is a cryptocurrency payment platform that lets merchants, financial institutions, and other businesses accept, hold, and move digital assets under a single account and dashboard. It provides merchant checkout integration with automatic settlement, wallet infrastructure for storing and transferring assets, and crypto-to-fiat conversion tools accessible through a unified API. The platform also offers custody, staking, and instant crypto-to-crypto conversion services, and can be deployed under a client's own branding as a white-label solution. Businesses across industries such as e-commerce, gaming, and gambling use the platform to accept payments across multiple blockchains and hold or grow digital asset balances.

Dfns Wallets-as-a-Service Platform is an embedded wallet infrastructure that lets banks, fintechs, and enterprises create and manage programmable digital asset wallets without building their own key management or signing stack. It uses multi-party computation to distribute private key shares across enclaved nodes, with every signing operation requiring quorum approval under configurable governance policies. The platform supports custodial and non-custodial models, multichain wallet creation, staking, fee sponsoring, and transaction execution, and can be deployed as a hosted service, hybrid, or fully on-premises to meet data sovereignty requirements. It also connects to centralized exchanges, decentralized liquidity venues, and fiat rails to route trades, swaps, and payments through a single custody interface.

A developer wallet service providing custodial and non‑custodial smart wallets via API and embeddable widget, with social login and multi‑chain support for rapid user onboarding.

Magic SDK provides passwordless authentication and embedded wallet infrastructure through developer APIs, enabling email-based login, social authentication, and automatic non-custodial wallet creation. The system uses patented Delegated Key Management System for secure private key handling while supporting transaction signing across multiple blockchain networks.

Cobo Wallet-as-a-Service is a developer infrastructure product that lets businesses embed custodial, multi-party computation, smart contract, and exchange wallet capabilities into their own applications through APIs and SDKs. It provides programmatic wallet creation across multiple blockchains along with a developer console for managing API keys, logs, and webhook events. Exchanges, brokerages, and fintech platforms use it to launch wallet functionality without building custody infrastructure from scratch.

Cobo Portal is a digital asset wallet platform that lets institutions manage custody, trading, and treasury operations from one interface. It combines custodial, multi-party computation, smart contract, and exchange wallet technologies under unified risk controls, approval workflows, and portfolio dashboards. Users connect to decentralized applications and centralized exchanges directly from the platform while enforcing customizable transaction and governance policies.

Openfort is a wallet infrastructure platform providing authentication, embedded wallets, and transaction management through unified APIs and SDKs. The system offers embedded wallet creation, global cross-application wallet frameworks, and backend wallet infrastructure for server-side operations, supporting ERC-4337 and EIP-7702 standards with Shamir Secret Sharing for key management.

Blockradar Wallet as a Service is an API-based infrastructure platform that lets fintechs provision and manage non-custodial stablecoin wallets across multiple blockchains. It generates dedicated wallet addresses for end users, auto-sweeps and settles incoming funds to a master wallet, and issues virtual bank accounts that convert fiat deposits into stablecoins on receipt. The platform provides a chain-abstracted stablecoin payment gateway, cross-chain stablecoin swap and bridge routing through a liquidity orchestration layer, and stablecoin checkout links for merchant payments. It also screens wallet addresses against sanctions and blocklists in real time and supports gasless transactions through sponsored network fees.

ZeroDev is a smart account development platform that creates embedded wallets with social login and provides ERC-4337 and EIP-7702 infrastructure. The system enables gasless transactions, transaction batching, and account recovery through direct social authentication or integration with existing wallet providers.

Sequence is a web3 development platform providing infrastructure tools for building games and applications, featuring embedded wallets, real-time blockchain indexing, payment processing, marketplace APIs, and cross-platform SDKs for Unity, Unreal, web, and mobile development.

Gaian Payment Platform is a stablecoin payment infrastructure product that enables borderless QR code payments and cross-border transfers with automatic conversion to local currency. It provides an API gateway and open-source SDK for businesses to embed stablecoin payments into their own platforms, alongside a hosted QR scanner and checkout for end users. The platform also issues embedded wallets so users without existing crypto wallets can hold and convert multiple stablecoins, and supports on and off-ramp conversions between stablecoins and local fiat currencies through licensed banking and payment-service partners. It operates across multiple blockchains and settles payouts through local banking rails in several Asia-Pacific markets.