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Found 3 Skills
Build non-custodial wallets where end users retain control of their private keys via Circle's user-controlled wallets SDK. Supports Google, Apple, Facebook social login, email OTP, and PIN authentication with MPC-based key management. Triggers on: user-controlled wallets, embedded wallet, social login wallet, email OTP wallet, PIN wallet, w3s-pw-web-sdk, challenge execution, executeChallenge, non-custodial wallet, MPC wallet, userToken, deviceToken.
Build unified cross-chain USDC balance management with Circle Unified Balance Kit SDK via App Kit (`@circle-fin/app-kit`) or standalone (`@circle-fin/unified-balance-kit`). Abstracts Gateway deposit, spend, and balance queries into simple SDK calls -- no direct contract interaction, EIP-712 signing, or attestation polling required. App Kit is recommended for extensibility across swap, bridge, send, and unified balance. Standalone Unified Balance Kit provides the same API surface in a lighter package. Neither requires a kit key for unified balance operations. Supports EVM chains and Solana via adapter packages. Use when: depositing USDC into a unified balance, spending from a unified balance to any supported chain, checking unified balance across chains, setting up Unified Balance Kit adapters (Viem, Solana, Circle Wallets), managing delegates for account separation, or building chain-abstracted USDC payment flows. Triggers on: unified balance, Unified Balance Kit, UnifiedBalanceKit, @circle-fin/unified-balance-kit, deposit USDC unified, spend unified balance, getBalances, cross-chain USDC SDK, chain abstraction SDK, adapter-viem, adapter-solana, depositFor, addDelegate, unified USDC.
Build browser or server token bridging across chains with Circle App Kit or standalone Bridge Kit. Bridges USDC across CCTP chains (EVM and Solana) and CCTPx tokens on supported EVM routes, including registry aliases such as wETH, cirBTC, and EURC plus registry-listed token IDs, through the same `kit.bridge()` call. Supports browser wallets, private-key and Circle Wallets adapters, bridge events, transfer speed (FAST/SLOW), Forwarding Service, and recovery. Bridge operations require no kit key. Use when: bridge a token across chains, bridge USDC, bridge a CCTPx token alias or token ID, move tokens between chains, build wallet-connected bridge UIs, configure Viem/Ethers/Solana adapters, or use @circle-fin/bridge-kit, @circle-fin/app-kit, CCTP, CCTPx, forwarding, or bridge routes.