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unify-balance

Generate TypeScript code for cross-chain USDC deposits, spends, and balance queries via Circle Unified Balance Kit.

1|Updated Jul 20, 2026
Search Tags:#typescript#cross-chain#stablecoin#usdc#circle#unified balance#chain abstraction
One-click install
npx skills add https://github.com/Lightupwrld/Cycuxio --skill unify-balance-lightupwrld
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: unify-balance
Source: https://github.com/Lightupwrld/Cycuxio/tree/main/.agents/skills/unify-balance
Command: npx skills add https://github.com/Lightupwrld/Cycuxio --skill unify-balance-lightupwrld

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires @circle-fin/app-kit, @circle-fin/unified-balance-kit, @circle-fin/adapter-viem-v2, @circle-fin/adapter-solana, @circle-fin/adapter-circle-wallets, viem, @solana/web3.js, and includes references (resource) components.

What problem does it solve? Managing USDC spread across multiple blockchains normally requires direct contract interaction, EIP-712 signing, and attestation polling. This Skill generates server-side TypeScript code that uses Circle's Unified Balance Kit or App Kit SDKs to handle all cross-chain orchestration through simple deposit, spend, and getBalances calls. ## Core Features & Use Cases - Unified Balance Operations: Generate code for depositing USDC into a unified balance, spending to any supported chain, and querying aggregated per-chain balances. - Multi-Adapter Support: Covers Viem private key, Solana, Circle developer-controlled wallets, and combined EVM + Solana multichain adapters. - Delegate & Withdrawal Flows: Implements addDelegate, depositFor, delegate spend, and the two-step 7-day delayed fund removal process. - Use Case: A developer building a chain-abstracted payment flow asks the assistant to deposit 10 USDC on Arc Testnet and spend 5 USDC to a recipient on Base Sepolia, receiving ready-to-review TypeScript code with correct chain identifiers and error handling. ## Quick Start Ask the assistant to generate code that deposits USDC into a unified balance on Arc Testnet and then spends it to a recipient on another chain using the Circle Unified Balance Kit.

Frequently Asked Questions about unify-balance

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I deposit USDC into a unified balance with Circle SDK?▼

Install @circle-fin/app-kit with @circle-fin/adapter-viem-v2, create a Viem adapter from your private key, and call kit.unifiedBalance.deposit with a from chain like Arc_Testnet and an amount. The SDK handles approval and transfer in one call.

App Kit vs Unified Balance Kit: which should I use?▼

Use App Kit (@circle-fin/app-kit) if you may need swap, bridge, or send features later, since it covers all of them in one package. Choose the standalone Unified Balance Kit only for unified-balance-only use cases; neither requires a kit key for balance operations.

Does Unified Balance Kit support Solana and EVM chains together?▼

Yes, you can combine the Viem adapter and Solana adapter in one integration. Deposit from both ecosystems and spend across them by passing multiple sources with per-chain allocations that sum to the total amount.

How do I withdraw USDC from a unified balance?▼

Withdrawal is a two-step process: call initiateRemoveFund to start a mandatory 7-day delayed withdrawal on a specific chain, then call removeFund after the activation period. Only one removal can be pending per chain at a time.

When should I use Gateway directly instead of Unified Balance Kit?▼

Use direct Gateway integration when you need browser-wallet flows with wagmi or EIP-1193 providers, since Unified Balance Kit is server-side only. It also fits when you need custom control over individual CCTP steps like approve, burn, attestation, and mint.

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